PPE Intake Exhaust Valves and Straight Valve Springs Kit Complete - GM 6.6L Duramax 2001-2016 110090083

This valve and spring kit comes standard with the PPE Cast Iron Cylinder Heads. Kit features straight valve springs with an installed pressure of 85-90 pounds, which offers higher responsiveness and better boost handling. All valves are fully nitridated, 21-4N super alloy exhaust valves. The spring retainers and seats are made of case-hardened high-strength chromoly steel for superior wear resistance. The FKM valve seals are tailored to the Cast Iron Heads’ valve guides for a tight seal. Each kit services two complete cylinder heads. Kit includes: 16 intake valves, 16 exhaust valves, 32 springs, 32 spring retainers, 32 spring seats, 32 sets of valve keepers, 32 valve seals.