ZRP Std Exhaust Valves Inconel for Audi VW Volkswagen 1.8T 20V

Audi / VW 1.8T 20V – ZRP Standard Exhaust Inconel Valves (Set of 8)

ZRP Standard Exhaust Inconel Valves are designed for Audi and Volkswagen 1.8T 20V turbocharged engines operating under extreme exhaust temperatures and high mechanical loads. Manufactured from premium nickel-based superalloys (Inconel 751 / 600 series), these valves deliver outstanding strength, thermal stability, and long-term reliability in conditions where conventional stainless-steel valves cannot perform.

Engineered for extreme-duty applications, ZRP Inconel exhaust valves maintain their structural integrity at exhaust gas temperatures exceeding 800°C. This makes them an ideal solution for turbocharged engines, high-boost builds, and endurance racing applications where consistent performance and durability are critical.

Each valve is precision CNC-machined, swirl-polished, and heat-treated to ensure excellent dimensional accuracy, surface finish, and durability. Strict manufacturing tolerances for stem straightness, concentricity, and sealing surfaces guarantee reliable combustion sealing and stable valve operation at high RPM.

Technical Features

• Material: Nickel-based superalloy (Inconel 751 / 600 series)

• Heat Resistance: Maintains strength at exhaust gas temperatures above 800°C

• Manufacturing Process: Precision CNC machining, swirl polishing, and heat treatment

• Dimensional Precision: Tight tolerances for stem straightness, concentricity, and sealing surfaces

Advantages

• Reduced stem-to-guide friction for lower wear and improved high-RPM stability

• Significantly longer service life compared to untreated stainless-steel valves

• Reliable sealing in both naturally aspirated and turbocharged engines

• Designed for high-performance street, track, and endurance motorsport use

Additional Information

• Set Quantity: 8 valves

• Material: Inconel

• Valve Size: 29.90 mm head / 5.94 mm stem / 103.90 mm length

• Engine Compatibility: All Audi / VW 1.8L 20V Turbo engines

• Application: 1.8L 20VT