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TruSeal oil gasket upgrade for Audi 3.0T EA837 oil filter housing, stops oil leaks that ruin upstream oxygen sensors
Audi 3.0T

Audi Oxygen Sensor Guide: Upstream vs Downstream, Codes and Testing

An O2 code does not always mean a bad sensor. This Audi oxygen sensor guide...
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Hengst PCV crankcase valve for Audi 3.0T EA837, a common cause of Audi check engine light lean codes
Audi 3.0T

Audi Check Engine Light Causes: Top 10 on the 3.0T and 4.0T, With Codes

The top 10 Audi check engine light causes on the supercharged 3.0T and twin-turbo 4.0T,...
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