Steel Lifters/Tappets

Dave's Auto Center Verified independent store

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1.45" DLC-Coated Steel TappetsHamilton Cams steel tappets built for engines running 110 lb or heavier valve springs at sustained high rpm. The 1.45" face is gas carburized, polishe d and finished with a Diamond-Like Carbon coating that cuts friction and resists the scuffing that ends a flat-tappet valvetrain early.Key Features DLC coating — an ultra-hard, low-friction surface that holds up where uncoated steel galls 1.45" face — more contact area with the lobe, better lobe life on today’s low-zinc diesel oils Steel construction — stable under 110 lb and heavier seat pressures Consistent lift — less deflection, so cam timing stays where it was set Required SetupThese tappets must be run with a steel camshaft. Pairing steel tappets with a cast cam, or the reverse, wears both parts out quickly. Steel camshaft required Diesel oil with adequate zinc, phosphorus and molybdenum — thin, low-additive oils do not build the film a flat tappet needs Correct valve lash; valve float damages the DLC layer Fitment1989–2007 Dodge Ram 5.9L Cummins and 2007.5–2018 Ram 6.7L Cummins flat-tappet builds using a compatible steel camshaft. Show more