Supertech intake valves for the Toyota Supra B58B30 are black-nitrided, triple-groove intake valves sold as a set of 12. The triple groove and nitrided finish are specified features that help with seating and surface hardness. These valves are intended for direct replacement or performance rebuilds where factory B58B30 engine valve specifications and count are required.
Supertech Toyota Supra B58B30 Black Nitrided Triple Groove Intake Valve - Set of 12