Tilton 1000 series hydraulic release bearings have the same mounting as the 3 bolt SAAB type making them a universal fitment for most popular transmissions. The bearings are available in a range of different heights and diameters to suit different applications and are self-adjusting to compensate for clutch wear. A constant contact design provides immediate pedal response and all the 3000 series use high quality bearings for smooth and reliable operation.Applications38mm Bearing Contact - Suitable for 4 1/2"- 5 1/2" Clutch44mm Bearing Contact - Suitable for 5 1/2 - 7 1/4" Clutch53mm Bearing Contact - Suitable for 5 1/2" - 8 1/2" Clutch43.4-77mm Bearing Contact (Flat Face) - Suitable for 8 1/2" - 10 1/2" Clutch with bent finger plate.