Engine Outlet Valve Seal Audi A6 A7 A8 Q7 Q8 S4 S5 SQ5 3.0L EA839 06L109675D

Over time, the valve stem oil seals in the Audi 3.0T EA839 engine can harden, crack, or degrade due to continuous exposure to extreme heat and friction. When an exhaust valve seal fails, engine oil can leak past the valve stem and enter the combustion chamber or exhaust tract, leading to excessive oil consumption, blue exhaust smoke (especially during deceleration or startup), and carbon buildup on the valves. Replacing worn outlet valve seals with these premium, high-temperature resistant replacements ensures a tight seal, reducing oil burning, restoring proper emissions, and protecting the engine's long-term performance and efficiency.