{"id":9970454528240,"title":"2001-2016 GM 6.6L Duramax Straight Valve Springs, Retainers, and Keepers Kit","handle":"straight-valve-springs-retainers-keepers-kit-gm-6-6l-duramax-2001-2016","description":"\u003ch2\u003eStraight Valve Springs, Retainers, and Keepers Kit\u003c\/h2\u003e\n\u003cp\u003eThis is the 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eEach kit services two complete cylinder heads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e32 springs\u003c\/li\u003e\n\u003cli\u003e32 spring retainers\u003c\/li\u003e\n\u003cli\u003e32 spring seats\u003c\/li\u003e\n\u003cli\u003e32 sets of valve keepers\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2026-04-04T18:55:20-07:00","created_at":"2026-04-04T18:55:20-07:00","vendor":"Pacific Performance 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Valve Springs, Retainers, and Keepers Kit\u003c\/h2\u003e\n\u003cp\u003eThis is the 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eEach kit services two complete cylinder heads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e32 springs\u003c\/li\u003e\n\u003cli\u003e32 spring retainers\u003c\/li\u003e\n\u003cli\u003e32 spring seats\u003c\/li\u003e\n\u003cli\u003e32 sets of valve keepers\u003c\/li\u003e\n\u003c\/ul\u003e"}