1.45" Cast Tappets — Expanded Surface AreaThe older 1.1" tappet leaves a small footprint on the lobe, and today’s low-zinc diesel oils punish that. Going up to 1.45" adds contact area and meaningfully improves lobe life on the same oil.Key Features 1.45" face — more lobe contact than the 1.1" standard Clears the 12V fuel pump eccentric — no interference on install Fits 12-valve, 24-valve and common-rail Cummins platforms Cast construction, for use with a cast camshaft Good to Know Fit new tappets whenever the camshaft is changed Running a steel camshaft? Use the DLC-coated steel tappets instead Use a diesel oil with adequate zinc and phosphorus during break-in Fitment1989–2007 Dodge Ram 5.9L Cummins and 2007.5–2018 Ram 6.7L Cummins flat-tappet engines using a compatible cast camshaft.
