ZRP Std Exhaust Valves Inconel for BMW Mini Cooper 1.5L B38 3-Cylinder

BMW / Mini Cooper 1.5L B38 (3-Cylinder) – ZRP Standard Exhaust Inconel Valves (Set of 6)

ZRP Standard Exhaust Inconel Valves are engineered for the BMW / Mini 1.5L B38 three-cylinder turbocharged engine. Designed to withstand extreme exhaust temperatures and elevated cylinder pressures, these valves provide exceptional durability, thermal stability, and consistent performance in both high-performance street and motorsport applications.

Manufactured from premium nickel-based superalloys (Inconel 751 / 600 series), ZRP exhaust valves maintain structural integrity at exhaust gas temperatures exceeding 800°C. They are specifically developed for extreme-duty environments where conventional stainless-steel valves cannot tolerate the thermal and mechanical loads generated by modern turbocharged engines.

Each valve is precision CNC-machined, swirl-polished, and heat-treated to ensure outstanding dimensional accuracy, optimized surface finish, and resistance to thermal fatigue. Tight tolerances for stem straightness, concentricity, and sealing surfaces guarantee reliable combustion sealing and stable high-RPM operation.

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: Strict tolerances for stem straightness, concentricity, and sealing surfaces

Advantages

• Reduced stem-to-guide friction for lower wear

• Improved stability at high RPM

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

• Reliable sealing in both naturally aspirated and turbocharged engines

• Suitable for high-performance street, track, and endurance applications

Additional Information

• Set Quantity: 6 valves

• Material: Inconel

• Valve Size: 28.50 mm / 5.95 mm / 100.10 mm

• Engine: BMW / Mini 1.5L B38 (3-Cylinder Turbo)

• Application: BMW i8, 1 Series, 2 Series, 3 Series, X1 / Mini F55, F56, F57, F54, F60