Supertech Black Nitride Exhaust Valve - Set of 8 | Multiple Fitments (VWEVN-1034-8)

Volkswagen ABF Black Nitride Exhaust Valves by Supertech

Supertech exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Some applications call for us to harden certain areas such as the tips and or the seats. For these applications we will often times weld other hard metal alloys to the valve for increased durability.

Features

• Head Diam: 28.00mm(std-KR/9A)
• Material: Stainless Steel 23-8N
• Groove Type: Single Groove
• Length: 98.20mm
• Stem Diam: 6.96mm
• Magnetic friction welded wafer, Hardened to 52 HRC min
• One piece forged valve (non-magnetic)
• Black Nitride for superior hardness keeping core ductility
• Back-cut angle
• “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve
• Undercut stem

Benefits

• Improves durability and reduces carbon build up
• Less Friction
• Better Flow Rates
• Better Sealing

Applications

• 1990-1991 Audi 90 Quattro
• 1990-1991 Audi Coupe Quattro
• 1990-1997 Volkswagen Golf
• 1990-1992 Volkswagen Jetta
• 1990-1993 Volkswagen Passat

What's In The Box?

• 8 - Exhaust Valve

Warranty

• Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.