MalWood USA Hydraulic Throwout Bearings are Made from aircraft quality aluminum and designed to withstand the high spring pressure and high RPM operation common to racing clutches or your daily driver. NOTE :  This Bearing has a 1.750 I.D. Will fit Chrysler NV4500 Manual Transmissions. This is a Flat Face Bearing. Heat-treated bearing faces are blanchard ground to ensure trueness; Ball bearing races are packed with heat-resistant grease for better lubrication and longer life.