Supertech Performance VWEVI-1015 Inconel Exhaust Valve Oversize - 0.5mm

The Supertech Performance VWEVI-1015 is a high-performance Inconel exhaust valve engineered for VW/Audi 1.8L and 2.0L 8-valve engines requiring a +0.5mm oversize head diameter. Manufactured from a nickel-based Inconel 751 superalloy, this valve is purpose-built to handle the extreme exhaust gas temperatures generated in turbocharged and high-performance street and race applications.

Key Specifications:

• Head Diameter: 33.50mm (+0.5mm oversize)
• Stem Diameter: 7.00mm (6.96mm actual)
• Overall Length: 90.95mm
• Material: Inconel (Nickel-Base Superalloy)
• Valve Type: Exhaust

Key Features:

• Inconel nickel-base superalloy construction provides exceptional high-temperature strength and oxidation resistance, outperforming stainless steel in sustained high-EGT conditions
• Precise seat geometry ensures reliable sealing and long-term durability across heat cycles
• Engineered for naturally aspirated, turbocharged, and supercharged builds that see elevated exhaust temperatures
• Manufactured with over 30 years of racing and engine-building expertise
• Oversize head diameter increases valve seat contact area — requires machining of factory seats or installation of aftermarket valve seats prior to fitment

Note: Valves are sold individually (per valve). Order the exact quantity needed for your engine build. Oversize valves are not a direct drop-in replacement and require professional seat machining or replacement.