Stainless Steel 42mm Hyd Intake Valve w/7mm stem for Audi V6 12

Description

Highflow Stainless Steel EV8 (21-4N), 42mm intake valve with 7mm stem necked down to 6.5mm for hyd lifter. Black nitride treatment reduces friction, improves heat dissipation and Valve guide wear. Heat treated keeper grooves and stems (52 HRC),. 91.6mm overall length.