KPMI® uses tough U.S. mill certified steel bar for these retainers. Our Steel Retainers are engineered using advanced Finite Element Analysis (FEA) software. FEA stress analysis allows our engineers to lighten the retainer without sacrificing strength. KPMI® steel retainers are heat treated to a specific hardness , strength and durability. This proprietary heat treatment process creates a hard outer shell, with a non-brittle core, resisting wear and maximizing toughness. All KPMI® retainers are inspected to insure correct fitment on the valve and on the springs. Correct fitment promotes longer component life and optimizes the Performance of the entire valvetrain.
Confirm the exact year, make, model and trim before ordering. Send us SKU 963717 with your vehicle info and we can help verify fitment.
Shipping services and final delivery cost are shown at checkout. Returns are confirmed before an RMA is issued — parts generally need to be uninstalled, unused and in original packaging. Full policy.
