The Supertech black-nitrided exhaust valve for VW 1.8L and 2.0L 8V applications is supplied as a set of four with a +2mm oversize. The black nitrided finish improves surface durability for exhaust service, and the larger oversize dimension is provided for installations requiring more substantial seat machining. Sold in matched sets to ensure consistent fit across the head.
Supertech VW 1.8L/2.0L 8V Black Nitrided Exhaust Valve - +2mm Oversize - Set of 4