Supertech Performance NIVN-1038 Black Nitrided Intake Valve Oversize - 1mm

The Supertech Performance NIVN-1038 is a high-performance black nitrided intake valve designed for Nissan VQ37VHR engines found in the 370Z, Infiniti G37, Q40, and Q60. This valve features a +1mm oversized head diameter for improved airflow and engine performance, making it ideal for racing and high-performance street applications.

Key Specifications:

• Head Diameter: 37.7mm (+1mm oversize)
• Stem Diameter: 5.97mm
• Overall Length: 100.2mm
• Material: Stainless Steel 21-4N with Black Nitride coating
• Groove Type: Single groove
• Valve Type: Intake

Features and Benefits:

• Forged from one piece of stainless steel for maximum strength and durability
• Black nitride hardening treatment provides superior wear resistance and reduced friction
• Microhardness exceeds 800HV while maintaining ductility beneath the hardened layer
• Smoother surface finish than chrome-coated valves for reduced stem friction
• Special heat treatment process optimized for performance applications

Supertech Performance valves are engineered for virtually every type of motorsport, including drag racing, rally, road racing, and other high-performance applications. The black nitride coating has become increasingly popular in Japanese performance engines due to its exceptional hardness and longevity. This valve is sold individually and is recommended to be installed with upgraded valve springs and stem seals for optimal performance.