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PRODUCT DESCRIPTION
Product details
Audi / VW 2.7L S4 30V APB Turbo – ZRP Standard Black Nitride Intake Valves (Set of 18)
The ZRP standard black nitride intake valves are used for the Audi 2.7L 30V APB Biturbo engine in the B5 S4. They are designed for high boost pressures and high RPMs, offering maximum durability and precise valve guiding.
Made from one-piece forged stainless steel (EV8 / 21-4N) and fully black nitrided, they provide increased wear and fatigue resistance.
Technical Features
Stainless steel EV8/21-4N
Nitride layer up to approx. 800 Vickers
CNC machined and tip hardened
Complete Black Nitride treatment
Advantages
Reduced friction
Longer lifespan
Suitable for turbo engines
Additional Information
Set: 18 pieces
Dimensions: 26.90 mm / 5.96 mm / 105.10 mm
Version: Audi S4 2.7L 30V Turbo
Engine code: APB
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