Supertech Black Nitride Exhaust Valves - Set of 8 | Multiple Fitments (VWEVN-1035-8)

VW 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.

Features

• Head Diam: 28.50mm(+0.5)
• Material: Stainless Steel 23-8N
• Groove Type: Single Groove
• Length: 98.20mm
• Stem Diam: 6.96mm
• Back-cut angle
• Undercut stem
• One piece forged valve (non-magnetic)
• Magnetic friction welded wafer, Hardened to 52 HRC min
• Black Nitride for superior hardness keeping core ductility
• “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve

Benefits

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

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 Valves

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.