The Ferrea Comp Plus +1.5 mm exhaust valve set for Nissan TB48DE turbo applications is supplied as twelve valves with 35 mm head diameter, 6.96 mm stem and 98.3 mm overall length, listed with a 20° flow profile. The +1.5 mm head sizing and turbo application are specified in the description, and these valves are offered as a set of 12 for TB48DE use.
Ferrea Nissan TB48DE 35mm 6.96mm 98.3mm 20 Deg Flo +1.5mm Comp Plus Exh Valve- Set of 12 (Turbo App)