37-Piece Sealed Bearing and Oil Seal Mounting Kit

Sealed bearings and lip seals fail early for one reason more than any other: they go in crooked, or the installing force gets put on the wrong race. Tap on the outer race of a sealed bearing to drive it onto a shaft and you brinell the balls before the bearing ever turns. This 37-piece kit exists so the load goes where it belongs. The nylon drifts are stepped so they contact only the race you are actually driving, and the three impact sleeves let you stack a drift on a sleeve and hit it square from directly behind the part instead of reaching around it.

On the bench the routine is simple. Pick the drift whose shoulder matches the seal case or bearing race, slide it onto an impact sleeve, set the part on the bore square by hand, then drive it home with a dead-blow or a press ram. The drifts are impact-resistant nylon rather than steel, so they will not gouge an aluminum case bore or score a sealing surface if you glance off the edge. That matters on transmission and transaxle work, where a scratched seal bore in a soft case means a leak you cannot torque away.

Because the sizes are stepped rather than model-specific, one case covers a lot of ground: pump and case bushings, extension housing seals, axle and hub seals, wheel bearings, input and output shaft seals, and general press-fit bushing work. Everything stores in a blow-molded case, so the drift you need is in its slot rather than rolling around a drawer. Manufacturer part number CR-GZ004; the loaded case weighs about 12 pounds, so it travels between the bench and the lift without a problem.