Features Application: J-44642 Rear Crankshaft Oil Tools Seal fits for Isuzu Duramax 2001-Later GMT800 2500HD 3500 6.6L Engine.Direct replacement to OEM parts number J-44642/J44642. Function: The heavy duty tool is designed to install the seal to correct depth and alignment. The fitment of the inner and outer seal bodies is critical and any misalignment can result in leakage. .
