Genuine Honda Parts - 50° VTC Actuator (Intake Cam Gear) - Honda - K20Z/K20ASpecifications: Manufacturer: Genuine Honda Parts Reference Number: 14310 RBC 003 Genuine Honda VTC actuator, this cam gear sits at the end of the intake camshaft allowing a set degree of cam advance retard. This is what differentiates later i VTEC engines to the earlier traditional style VTEC system. While the ECU controls the amount of movement, it's mechanically limited by the range on the gear itself, 50 degrees is the maximum amount of movement