{"product_id":"ppe-110090053-ppe-2001-2016-gm-6-6l-duramax-straight-valve-springs-retainers-and-keepers-kit","title":"PPE 2001-2016 GM 6.6L Duramax Straight Valve Springs, Retainers, and Keepers Kit","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","brand":"PPE","offers":[{"title":"Default Title","offer_id":48366193770737,"sku":"110090053","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1344\/3057\/files\/PPE-2001-2016-GM-6.6L-Duramax-Straight-Valve-Springs_-Retainers_-and-Keepers-Kit-PPE-163088674.jpg?v=1782910116","url":"https:\/\/tamelessperformance.com\/products\/ppe-110090053-ppe-2001-2016-gm-6-6l-duramax-straight-valve-springs-retainers-and-keepers-kit","provider":"TAMELESS PERFORMANCE","version":"1.0","type":"link"}