Supertech supplies black-nitrided exhaust valves for the Mini Cooper W11B16A 1.6L Supercharged engine as an eight-piece set. The description notes the black-nitrided finish and the eight-valve quantity appropriate for full exhaust valve replacement on compatible W11B16A 1.6L supercharged Mini Cooper engines when matching the original valve specification.
Supertech Mini Cooper W11B16A 1.6L Supercharged Black Nitrided Exhaust Valve - Set of 8