Supertech black-nitrided intake valves for Audi and VW 2.0T FSI 16V engines are supplied as a set of ten and are specified for that engine family. The nitrided surface treatment is cited in the description, and these valves are intended as direct-fit replacements for rebuilds requiring OEM-style intake valve geometry and surface finish on the 2.0T FSI 16-valve engines.
Supertech Audi/VW 2.0T FSI 16V Black Nitrided Intake Valve - Set of 10