2001-2016 GM 6.6L Duramax Valve and Spring Kit

This is the valve and spring kit that 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