Supertech Black Nitride Exhaust Valve - Single | 2000-2006 BMW M3 (BMEVN-1040)

BMW S54B32 Black Nitride Exhaust Valve by Supertech Supertech exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Features Head Diam: 30.50mm Material: Stainless Steel 23-8N Groove Type: Triple Groove Length: 118.85mm Stem Diam: 5.95mm Size: Std 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 2000-2006 BMW E46 M3 2000-2002 BMW E36/7 Z3 M Roadster, E36/8 M Coupé 2006-2008 BMW E85 Z4 M Roadster, E86 Z4 M Coupé What's In The Box? 1 - 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 p