Which hydraulic throwout bearing should I use, the slip on or the bolt on?
A. While both are equal in quality and workings, there is a difference in how they fit into the bellhousing. The slip on is adjusted before you install and the bolt on is sent with the correct piston length for installation. Slip on bearings will not fit into the bellhousings and have the proper clearance unless you have approximately 3″ from the outside surface of the bellhousing down to the crown of the fingers of the pressure plate. Bellhousings that are 6.5″ or less, usually will not have this clearance. Always measure before ordering. Bolt on models will replace your current front input collar and will have an oil seal installed from the factory.