EngineQuest Assembled Cylinder Head - 2.165 in/1.590" Valves - 258 cc Intake - 69 cc Chamber - Aluminum - GM LS-Series H77715FM Air Adjustable from 5 to

Air Adjustable from 5 to 100 psi

High-strength aluminum alloy componentsVehicle Applications: 2014-2018 Silverado & Sierra 1500

Optical grade injected Double Screen Anti Fog (DSAF) shield

Meets SFI 45

When required- a torque resistant safety interlock design is used that is comparable in strength to those too hard-running metal mounts

EngineQuest Assembled Cylinder Head - 2.165 in/1.590" Valves - 258 cc Intake - 69 cc Chamber - Aluminum - GM LS-Series H77715FM Air Adjustable from 5 toEngine Cylinder Head Thicker decks for greater strength Superior port finish for increased flow Improved flow design to resist crackingSince 1949, the Enginequest family has helped the engine rebuilders solve their production problems. Product Description: Cylinder Head Assembled 2. 165 in 1. 590 in Valves 258 cc Intake 69 cc Chamber Aluminum GM LS Series Sold Individually