Cummins QSB 4.5 Parts - Camshaft Section Loading... 1 Cummins Camshaft Bushing . Price: $ Qty: ^ Details In Stock Add to Cart 2 Cummins Valve Lifter Valve tappet, for engines built before 2003 Price: $ Qty: ^ Details In Stock Add to Cart 3 Cummins Valve Lifter Valve tappet, for engines built in 2003 and later Price: $ Qty: ^ Pictures In Stock Add to Cart