{"title":"B9 S4\/S5 Cooling","description":"\u003cp\u003eCooling parts for the Audi B9\/B9.5 S4 and S5 3.0T. Vorsprung lists fitment on every product so you can match parts to your car.\u003c\/p\u003e","products":[{"product_id":"audi-3-0t-2-9t-billet-thermostat-housing-ea839","title":"Audi 3.0T\/2.9T Billet Thermostat Housing, EA839","description":"\u003ch3\u003eVorsprung Autowerk Billet Aluminum Thermostat Housing (EA839 3.0T\/2.9T)\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fef9c3; border: 1px solid #eab308; border-radius: 6px; padding: 12px 16px; margin: 12px 0;\"\u003e\n\u003cspan style=\"display: inline-block; background-color: #92400e; color: #ffffff; font-weight: bold; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; padding: 3px 10px; border-radius: 4px; margin-right: 8px; vertical-align: middle;\"\u003ePre-Order\u003c\/span\u003e\n\u003cspan style=\"color: #451a03; font-size: 0.9rem; vertical-align: middle;\"\u003eThis is a new listing. Orders are shipping in batches, with stock arriving late October to early November 2026. Order now to be first in line.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003eYour cooling system runs on a part made from a material that can't handle its own job.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe turbocharged EA839 3.0T\/2.9T V6 in your B9 S4, S5, SQ5, RS5, C8 A6, A7, S6, S7, D5 A8, 4M Q7 or Q8 makes serious heat under boost. Audi's answer at the thermostat housing? A factory plastic unit sitting directly in the coolant loop, baking through heat cycle after heat cycle.\u003c\/p\u003e\n\u003cp\u003eOver time that plastic goes brittle. It cracks at the seams, warps around the sealing surface, and starts weeping coolant right when you can least afford to lose it. A slow leak turns into a coolant warning, a coolant warning turns into an overheat, and an overheat on a turbocharged engine is not a cheap mistake.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe Permanent Solution:\u003c\/b\u003e We don't replace a failed plastic part with another plastic part. The \u003cb\u003eVorsprung Autowerk Billet Thermostat Housing\u003c\/b\u003e is machined from 6061-T6 aluminum and engineered to outlast the factory unit, and the car, entirely. It closes the weak point in your cooling loop for good, whether your EA839 sees daily traffic or a track day.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eReady to Drop In:\u003c\/b\u003e Order it with the OEM Calorstat thermostat already installed and go straight from box to bay, or grab the billet-only housing if you're reusing your current thermostat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant the full story?\u003c\/strong\u003e Read our \u003ca href=\"\/blogs\/news\/audi-ea839-thermostat-housing-failure-guide\"\u003eAudi EA839 thermostat housing failure guide\u003c\/a\u003e for symptoms, cost comparisons, and install notes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eMaterial:\u003c\/b\u003e 6061-T6 Billet Aluminum (no cracking, no warping, no more plastic in the loop).\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eFinish:\u003c\/b\u003e Anodized for corrosion resistance and a cleaner engine bay.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBillet Housing + OEM Calorstat Thermostat Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eBillet Housing\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOEM Calorstat Thermostat\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOE Gaskets\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAll Hardware\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNew Bolts\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBillet Housing Only Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAll of the above except the thermostat\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eComplete Your Build:\u003c\/strong\u003e Pair this housing with our \u003ca href=\"\/products\/vorsprung-zeus-ignition-coil-upgrade-kit-audi-3-0-turbo-ea839\"\u003eZeus Ignition Coil Upgrade Kit\u003c\/a\u003e for stronger spark on the same EA839 platform, or our \u003ca href=\"\/products\/vorsprung-autowerk-4-bar-map-sensors-audi-b9-ea839\"\u003e4 Bar MAP Sensors\u003c\/a\u003e if you're already pushing more boost than stock.\u003c\/p\u003e\n\u003chr\u003e\n\u003cdiv class=\"product-fitment-section\" style=\"margin: 20px 0; font-family: inherit;\"\u003e\n\u003ch3 style=\"font-size: 1.1rem; margin-bottom: 10px; font-weight: bold;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cp\u003eThis housing replaces OEM part number 06M121115P (and the OEM thermostat, 06M121115N) across the EA839 3.0T\/2.9T turbocharged platform below.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left; font-size: 0.95rem;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom: 2px solid #ddd; background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS4\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB9 \/ B9.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB9 \/ B9.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSQ5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB9 \/ B9.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eA6, A7\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2019–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eC8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eA8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eD5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eQ7\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2020–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e4M.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eQ8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2019–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e4M\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eRS5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB9 \/ B9.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2.9T V6 Twin-Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS6\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2020–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eC8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2.9T V6 Twin-Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS7\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2020–Present\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eC8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2.9T V6 Twin-Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 10px; font-size: 0.85rem; color: #555;\"\u003e\u003cem\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This is the newer turbocharged EA839 3.0T\/2.9T engine, distinct from the older supercharged EA837 3.0T. Check your engine code before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eThermostat Housing FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the factory plastic thermostat housing fail?\u003c\/strong\u003e\u003cbr\u003eAfter thousands of heat cycles and constant exposure to corrosive antifreeze, the factory plastic turns brittle, cracks, and warps, eventually weeping coolant and risking an overheat on a turbocharged engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I get the full assembly or the billet-only housing?\u003c\/strong\u003e\u003cbr\u003eThe full assembly includes a billet housing pre-assembled with an OEM Calorstat thermostat, OE gaskets, all hardware, and new bolts. The billet-only housing includes everything except the thermostat, for anyone reusing a known-good factory unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a direct bolt-on?\u003c\/strong\u003e\u003cbr\u003eYes. It comes pre-assembled and installs in place of the factory plastic housing with no modification required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my supercharged EA837 S4\/S5?\u003c\/strong\u003e\u003cbr\u003eNo. This housing is for the newer turbocharged EA839 3.0T\/2.9T engine. If you have the older supercharged EA837 3.0T, check our separate EA837 billet thermostat housing listing instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tune after installing this?\u003c\/strong\u003e\u003cbr\u003eNo. This is a mechanical cooling system upgrade, not a tuning part, so no software changes are required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen will my order ship?\u003c\/strong\u003e\u003cbr\u003eThis is a pre-order listing. Orders are shipping in batches, with current stock arriving late October to early November 2026.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Audi?\u003c\/strong\u003e\u003cbr\u003eCheck the Vehicle Fitment table above. It covers every EA839 3.0T and 2.9T Audi listed there. If your Audi isn't listed, email us at help@vorsprungautowerk.com before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003cdiv style=\"background-color: #f8fafc; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin: 30px 0;\"\u003e\n\u003ch3 style=\"font-size: 1.25rem; font-weight: bold; margin-top: 0; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.5px; color: #0f172a;\"\u003eWhy Buy From Us?\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding: 0; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 14px;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003eEnthusiast Designed \u0026amp; Tested:\u003c\/strong\u003e Developed by people who actually drive and modify these cars.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003eTested on Our Own Cars:\u003c\/strong\u003e If we wouldn't run it ourselves, we don't sell it.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003eContinuous R\u0026amp;D:\u003c\/strong\u003e We continually develop and improve our products instead of relying on generic catalog parts.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003eSupporting Audi Platform Development:\u003c\/strong\u003e Your purchase helps fund continued development of new parts for these chassis.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003eReal Enthusiast Support:\u003c\/strong\u003e Get help from people who understand the platform, not ticket bots.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003eSmall Team, Big Passion:\u003c\/strong\u003e Every order directly supports continued product development and innovation.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0;\"\u003e✅ \u003cstrong style=\"color: #0f172a;\"\u003ePerformance Without the Marketing Fluff:\u003c\/strong\u003e Purpose-built parts designed to perform.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: center; font-weight: bold; margin-top: 30px;\"\u003eDrive the difference. Drive Vorsprung.\u003c\/p\u003e","brand":"Vorsprung Autowerk","offers":[{"title":"Billet Housing + OEM Calorstat Thermostat","offer_id":58552910840111,"sku":null,"price":224.99,"currency_code":"USD","in_stock":true},{"title":"Billet Housing","offer_id":58552910872879,"sku":null,"price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5821\/3935\/files\/b41c95ad25fd656c868519f3a3718af2.png?v=1790606186"},{"product_id":"vorsprung-truchill-intercooler-audi-b9-b9-5-s4-s5-3-0t","title":"Vorsprung TruChill Intercooler, Audi B9\/B9.5 S4, S5 3.0T","description":"\u003ch3\u003e\n\u003cspan style=\"display: inline-block; background-color: #92400e; color: #ffffff; font-weight: bold; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; padding: 3px 10px; border-radius: 4px; margin-right: 8px; vertical-align: middle;\"\u003ePRE-ORDER\u003c\/span\u003e\u003cspan\u003e More s\u003c\/span\u003e\u003cspan style=\"color: #451a03; font-size: 0.9rem; vertical-align: middle;\"\u003etock is arriving early November 2026. Order now to be first in line, we'll ship the moment it's in hand.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eStock Intercooler Holding Your 3.0T Back? Here's the Fix.\u003c\/h3\u003e\n\u003cp\u003eThe factory intercooler on your B9 S4 or S5 was sized for emissions compliance and fuel economy testing, not for sustained pulls up a canyon road or back-to-back track sessions. Push the turbo hard for more than a few seconds and intake air temps climb, the ECU pulls timing to protect the engine, and the power you paid for on the dyno quietly disappears.\u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eVorsprung TruChill Intercooler\u003c\/b\u003e replaces that undersized factory core with a massively larger, purpose-built unit designed to keep intake temps low, lap after lap.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eBuilt Different From the Bargain-Bin Cores\u003c\/h3\u003e\n\u003cp\u003eNot every \"upgraded\" intercooler on the market is built the same way, even when two boxes look identical from a listing photo. A lot of budget imports are just a bigger tube stack dropped into end tanks that were never actually engineered for airflow, just shaped to bolt on. It looks like an upgrade in a photo. It isn't engineered like one.\u003c\/p\u003e\n\u003ch4\u003eTube-Fin Core With Internal Turbulators\u003c\/h4\u003e\n\u003cp\u003eThe TruChill core uses a tube-fin design with internal turbulators inside each tube, not a plain extruded tube. Turbulators break up the airflow as it moves through the core, forcing more of it into contact with the tube walls instead of coasting through the center untouched. That's the difference between a core that looks big and a core that actually transfers heat.\u003c\/p\u003e\n\u003ch4\u003eCast End Tanks Engineered to Use the Whole Core\u003c\/h4\u003e\n\u003cp\u003eHere's the problem most \"bigger\" intercoolers never solve: pump boosted air into a core through a single inlet and it wants to blast straight through the center tubes, leaving the tubes near the edges doing almost no work. A core can look massive in a listing photo and still only be using a fraction of its own frontal area. TruChill's cast aluminum end tanks are internally shaped using CFD (computational fluid dynamics) modeling specifically to fix that: the geometry inside the tank distributes incoming air evenly across every tube, edge to edge, so the whole core face actually participates in cooling the charge instead of just the middle third of it. That's the real difference between a core that's big on paper and one that's big where it counts.\u003c\/p\u003e\n\u003ch4\u003eReal Numbers, Not Marketing Numbers\u003c\/h4\u003e\n\u003cp\u003eThis core delivers a 134% larger frontal area and 105% more core volume than the factory unit, the same core dimensions used in the competition-grade design this unit is built from. We counted roughly 30 individual cooling tubes across the face, the highest row count we've measured on any B9 intercooler core in this price range, because most listings in this category won't tell you their row count or fin density at all. We will, because ours wins that comparison.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTruChill vs. the Rest of the B9 Intercooler Market\u003c\/h3\u003e\n\u003cp\u003eThere's no shortage of \"upgraded\" B9 S4\/S5 intercoolers out there, ranging from budget direct-fit units to boutique kits north of $1,400. Here's how TruChill stacks up against what's actually on the market:\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli\u003e\n\u003cb\u003eVs. generic imported cores:\u003c\/b\u003e Most sub-$500 \"upgrades\" reuse a generic tube core dropped into a stock-shaped end tank with no internal flow engineering, so a lot of that extra size doesn't actually translate into better heat transfer; the middle of the core does the work while the edges sit there doing nothing. TruChill's CFD-shaped tanks and turbulated tube-fin core are built to actually use the size increase, not just advertise it, more rows, tighter fins, and airflow engineering nobody in this price bracket is doing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVs. a similarly-priced direct-fit bar-and-plate core:\u003c\/b\u003e There's a well-known direct-fit unit at almost exactly our price point that uses a bar-and-plate core with internal air-directing fins, a solid design. Counting its own published product photos, its core runs roughly 26 fin rows across the face. TruChill runs more: roughly 28, the highest we've measured in this class, and every one of those rows is actually doing work thanks to CFD-shaped end tanks that push air evenly across the whole core instead of favoring the middle. More rows, better distribution, that's not close.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVs. the $945-995 tube-style competitor:\u003c\/b\u003e That unit posts a 130% frontal area increase and an 83% volume increase over stock, solid figures, and counting its own published photos, its core runs roughly 24 tube rows across the face. TruChill beats it everywhere that matters: 134% more frontal area, 105% more volume, and roughly 30 rows (28 fin), six more than that competitor, all backed by CFD-optimized flow distribution most of this category skips entirely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVs. the $1,400+ boutique FDS-style kit:\u003c\/b\u003e That kit's core is larger yet again and uses 70mm inlets and outlets, but it doesn't come with the charge pipes needed to actually install it, so the real price of that upgrade is well north of $1,400 before you're done. TruChill gets you a massively larger, turbulated core at half that spend.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFin density is where a lot of listings get vague, so let's not. TruChill runs a tightly-packed, turbulated fin structure between every one of those roughly 30 rows, the densest, most aggressive fin pitch we build into any core on this platform. Pair that with the highest row count we've measured in the category and CFD-shaped end tanks that put boosted air on every single row instead of just the middle third, and you've got a core that isn't just bigger on a spec sheet, it's built to actually use every inch of that size.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBottom line:\u003c\/b\u003e TruChill isn't a reskinned bargain core, and it isn't priced like the boutique options either. More rows than the competition, more frontal area and volume than stock, and CFD-shaped end tanks engineered to put every one of those advantages to work instead of leaving them on a spec sheet. That's the caliber of engineering premium brands charge $950-$1,400+ for, at a price that doesn't require justifying the spend to yourself for a week first.\u003c\/p\u003e\n\u003chr\u003e\n\u003cdiv class=\"product-fitment-section\" style=\"margin: 20px 0; font-family: inherit;\"\u003e\n\u003ch3 style=\"font-size: 1.1rem; margin-bottom: 10px; font-weight: bold;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cp\u003eDirect-fit for the Audi B9 and B9.5 S4 and S5 running the 3.0T EA839 V6 turbo, US-spec (LHD) models.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left; font-size: 0.95rem;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom: 2px solid #ddd; background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS4\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018-2024\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB9 \/ B9.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo (EA839)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS5 (Coupe \/ Sportback \/ Cabriolet)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2018-2024\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB9 \/ B9.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Turbo (EA839)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 10px; font-size: 0.85rem; color: #555;\"\u003e\u003cem\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This is a US-spec (LHD) fitment. Does not fit SQ5, RS4, or RS5 (different intercooler packaging), and EU-model bumpers may differ. Not sure if this fits your build? Email us at help@vorsprungautowerk.com.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features \u0026amp; Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCore Design:\u003c\/b\u003e Tube-Fin Core With Internal Turbulators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEnd Tanks:\u003c\/b\u003e Cast Aluminum, CFD-Optimized for Even Airflow Distribution\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSizing:\u003c\/b\u003e 134% Larger Frontal Area \/ 105% More Core Volume vs. Factory\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCooling Channels:\u003c\/b\u003e ~30 Individual Tube Rows, the Most We've Measured in This Class\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFin Density:\u003c\/b\u003e Tightly-Packed, Turbulated Fin Structure Between Every Row\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFinish:\u003c\/b\u003e Matte Black, Vorsprung-Branded End Tank\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFitment:\u003c\/b\u003e Direct Bolt-In, Factory Mounting Location\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdiv style=\"background-color: #f8fafc; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin: 30px 0;\"\u003e\n\u003ch3 style=\"font-size: 1.25rem; font-weight: bold; margin-top: 0; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.5px; color: #0f172a;\"\u003eWhy Buy From Us?\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding: 0; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\n\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eWe Tell You What's Inside:\u003c\/strong\u003e CFD-shaped tanks, the highest row count we've measured in the category, and a turbulated core built to use it. No vague \"upgraded core\" language hiding a downgrade.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\n\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eEnthusiast Designed \u0026amp; Tested:\u003c\/strong\u003e Developed by people who actually drive and modify these cars.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\n\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003ePremium Construction at a Fair Price:\u003c\/strong\u003e Cast, CFD-optimized end tanks and a turbulated core, without the boutique-brand markup.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\n\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eReal Enthusiast Support:\u003c\/strong\u003e Get help from people who understand the platform, not ticket bots.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\n\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eSmall Team, Big Passion:\u003c\/strong\u003e Every order directly supports continued product development for this platform.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eComplete Your Build\u003c\/h3\u003e\n\u003cp\u003eAlready in the engine bay upgrading airflow? These B9-platform parts pair well with a TruChill install:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"\/products\/vorsprung-autowerk-sp-street-performance-brake-pads\"\u003eVorsprung Autowerk SP Brake Pads (B9 S4\/S5\/SQ5 Fitment)\u003c\/a\u003e: if you're chasing lower intake temps for repeated pulls, your brakes are working just as hard. Upgrade both ends at once.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"\/products\/vorsprung-autowerk-velocity-rotors\"\u003eVorsprung Autowerk Velocity Rotors (OEM B9 Sizing)\u003c\/a\u003e: a direct-fit rotor upgrade sized for your B9's factory calipers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTruChill Intercooler FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a direct bolt-in, or do I need other parts?\u003c\/strong\u003e\u003cbr\u003eTruChill bolts into the factory intercooler location. This listing is the core only; it does not include charge pipes. Because the core is significantly larger than stock, most installs pair it with a charge pipe kit sized for the larger core. Check your port sizing before you order pipes, or email us and we'll help you match it up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this trigger a check engine light or need a tune?\u003c\/strong\u003e\u003cbr\u003eNo. A more efficient intercooler on its own doesn't change fueling or timing tables, so it won't set a fault code on a stock ECU. If you're already running a performance tune, lower and more consistent intake air temps mean it can hold timing longer under sustained pulls.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit my SQ5?\u003c\/strong\u003e\u003cbr\u003eNo. The SQ5 shares the 3.0T EA839 engine but uses different front-end packaging, so it needs its own intercooler kit. Email us if you're looking for SQ5 fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's actually different about this core vs. a cheap import?\u003c\/strong\u003e\u003cbr\u003eAirflow engineering. A tube-fin core with internal turbulators and CFD-shaped end tanks that distribute air evenly across every tube moves and cools air very differently than a generic core with tanks that were never modeled for flow, even when the outside dimensions look similar in a listing photo.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many rows does the core have?\u003c\/strong\u003e\u003cbr\u003eRoughly 30 individual tube rows, the highest we've measured on any B9 intercooler core in this price range, with a tightly-packed, turbulated fin structure between them. Most competing listings in this price range won't even tell you their row count, let alone beat ours.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with a warranty?\u003c\/strong\u003e\u003cbr\u003eYes, every TruChill Intercooler is backed by Vorsprung Autowerk's standard limited warranty against manufacturing defects.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eDrive the difference. Drive Vorsprung.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Vorsprung Autowerk","offers":[{"title":"Default Title","offer_id":58565591597359,"sku":null,"price":699.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5821\/3935\/files\/Gemini_Generated_Image_pxzw9mpxzw9mpxzw.jpg?v=1790721201"}],"url":"https:\/\/www.vorsprungautowerk.com\/collections\/audi-b9-s4-s5-cooling.oembed","provider":"Vorsprung Autowerk","version":"1.0","type":"link"}