This specialty tool (Part No. 775) is designed to remove and install the crankcase main seal while the engine is still in the chassis. For $160.85 MSRP the unique design reduces the risk of damage to the crankshaft and crankcase. Manufactured from hardened tool steel, the kit includes adapters required for use on both Twin Cam 88® and Twin Cam 96® based engines. For more information please contact us at (805) 482-6913, email us at firstname.lastname@example.org, or visit www.jimsusa.com.