{"product_id":"xdp-performance-valve-springs-retainer-kit-for-2001-2016-gm-6-6l-duramax-xd386","title":"XDP PERFORMANCE VALVE SPRINGS \u0026 RETAINER KIT FOR 2001-2016 GM 6.6L DURAMAX","description":"\u003cp\u003eThe XDP Performance Valve Springs \u0026amp; Retainer Kit XD386 are a perfect upgrade for your modified 2001-2016 GM 6.6L Duramax. Camshaft upgrades and other modifications that increase boost require more valve control. The XDP Performance Valve Spring feature a conical design for better valve control than a standard straight spring. The conical design also allows for smaller and lighter spring retainers. Each spring undergoes a stress relief process and is computer load mapped, to ensure quality and long-term reliability. Each spring is matched within 1 lb of seat pressure to ensure consistency. Sold as a complete set with valve springs, retainers, and locks. Each kit is backed by XDP's 2-year unlimited mileage warranty.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e125 Lb. Seat Pressure\u003c\/li\u003e\n\n\u003cli\u003eConical Spring Design\u003c\/li\u003e\n\n\u003cli\u003ePerformance Valve Spring Kit\u003c\/li\u003e\n\n\u003cli\u003eEssential For Elevated Boost Levels\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e2001-2016 Chevrolet\/GMC 6.6L Duramax LB7\/LLY\/LBZ\/LMM\/LML\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eSprings\u003c\/li\u003e\n\n\u003cli\u003eLocks\u003c\/li\u003e\n\n\u003cli\u003eRetainers\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eThis product can not be shipped to these states: CA\u003c\/li\u003e\n\n\u003c\/ul\u003e","brand":"XDP","offers":[{"title":"Default Title","offer_id":45078842671261,"sku":"XD386","price":675.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/2504\/1821\/files\/F198807078.jpg?v=1713430461","url":"https:\/\/rudysdiesel.com\/products\/xdp-performance-valve-springs-retainer-kit-for-2001-2016-gm-6-6l-duramax-xd386","provider":"Rudy's Performance Parts","version":"1.0","type":"link"}