Oversize stainless 35mm exhaust valve with 7mm stem necked down to 6.5mm for Solid lifter 1.8L heads '83-'88 (Intake Valve length 98.60mm, Exhaust length 98.40mm). Higher flow than the std. valve. Black nitride treatment reduces friction, improves heat dissipation and Valve guide wear. (use exhaust seat 109 162) (To convert 8mm head to 7mm. Parts needed 109 222 exhaust valve guide, 109 290 7mm keepers, 109 085 (109 136 Titanium) upper retainers, 109 322 exhaust seals)