Supertech black-nitrided intake valves for Ford EcoBoost 2.3L are supplied as an eight-piece standard-size set. The listing identifies these as STD-size intake valves with a black nitrided finish, intended as direct-fit replacements for the 2.3L EcoBoost intake valvetrain where standard diameter components are required.
Supertech Ford Ecoboost 2.3L Black Nitrided Intake Valve - STD Size - Set of 8