The CTA Cummins Sleeve Installer Kit, No. 8612, is used for 3.9L, 5.9L, and 6.7L Cummins engines when the wear sleeve is installed or replaced. It services Paccar PX-6 models and 1989-2016 Cummins 4BT 3.9L, B Series 5.9L, ISB 5.9L and 6.7L, and QSB 5.9L and 6.7L. The kit Includes Crankshaft Seal Installation Tool, No. 5041, along with Wear Sleeve Installation Tool, No. 5046, for installing factory seals 3937111, 3904353, and 3802820.