These tappets are 1.3″ compared to many 4bt tappets which are 1.10″. The 1.3″ tappet will allow the pressures between the cam and the tappet to be spread over a wider surface area.
4BT 8V Colt Cams Lifters/Tappets
$129.00
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These tappets are 1.4″ compared to many 4bt tappets which are 1.10″. The 1.4″ tappet will allow the pressures between the cam and the tappet to be spread over a wider surface area.
Fits: 89-Present 4BT Cummins
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