Features and Benefits:Use for 3.9L, 5.9L & 6.7L Cummins engines when wear sleeve is installed or replaced;Services Paccar PX-6, 1989-2016 Cummins 4BT 3.9L, B Series 5.9L, ISB 5.9L 6.7L and QSB 5.9L 6.7L;Includes CTA 5041 Crankshaft Seal Installation Tool along with CTA 5046 Wear Sleeve Installation Tool;Installs factory seals 3937111, 3904353, 3802820;Use for 3.9L, 5.9L & 6.7L Cummins engines when wear sleeve is installed or replaced. Services Paccar PX-6, 1989-2016 Cummins 4BT 3.9L, B Series 5.9L, ISB 5.9L 6.7L and QSB 5.9L 6.7L. Includes CTA 5041 Crankshaft Seal Installation Tool along with CTA 5046 Wear Sleeve Installation Tool. Installs factory seals 3937111, 3904353, 3802820.