{"product_id":"1989-1998-cummins-manton-12v-valve-spring-kit-d-105-kit-12v","title":"1989-1998 Cummins 5.9L 12V Manton Conical Valve Spring Kit (D-105-KIT-12V)","description":"\u003cp\u003e\u003cstrong\u003e1989-1998 Cummins 5.9L 12V Manton Conical Valve Spring Kit (D-105-KIT-12V)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUpgrade your 12V 5.9L engine with Manton Heavy Duty Conical Springs, Billet Retainers \u0026amp; Lock Kit.\u003c\/p\u003e\n\u003cp\u003eIdeal for engines running over 40psi and 3,700rpm; stronger pushrods recommended for this setup.\u003c\/p\u003e\n\u003cp\u003eProtects valves from being pushed open under high boost conditions, enhancing efficiency and longevity.\u003c\/p\u003e\n\u003cp\u003eEngineered for high boost capability and maximum valve train stability.\u003c\/p\u003e\n\u003cp\u003ePerfect for stock rebuilds or high-performance race applications.\u003c\/p\u003e\n\u003cp\u003eLightweight 7-degree billet steel retainers designed to match conical spring shape, stronger than OEM.\u003c\/p\u003e\n\u003cp\u003eIncludes 7-degree valve locks designed for these retainers.\u003c\/p\u003e\n\u003cp\u003eHeat-treated spring shims available in various thicknesses for adjusting seat pressure to accommodate max boost.\u003c\/p\u003e","brand":"Manton Pushrods","offers":[{"title":"Default Title","offer_id":50620240625950,"sku":"D-105-KIT-12V","price":711.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/Product_Image_-_2025-01-31T103244.623.png?v=1771367950","url":"https:\/\/platinumhpsolutions.myshopify.com\/fr\/products\/1989-1998-cummins-manton-12v-valve-spring-kit-d-105-kit-12v","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}