Twelve aluminum driver discs from 1.585 to 4.625 inches plus a handle for seating wheel bearing races, axle seals and hub seals square without marring them.
A 13-piece bearing race and seal driver set: twelve aluminum alloy driver discs sized from 1.585 in. to 4.625 in. (39.8 mm to 117.5 mm) and one anti-vibration handle, packed in a fitted storage case. It covers the common tapered-roller races and lip seals found in wheel hubs, rear axle housings and differential carriers on cars and light trucks.
On the bench: pick the disc whose outside diameter is just under the race or seal OD, thread it onto the handle, set the race square in the bore and drive it home with a hammer until the sound changes and the race bottoms against its shoulder. The flat face spreads the load around the whole ring, so the race goes in straight instead of cocking and shaving the bore like it does with a punch or an old race.
Aluminum is softer than a hardened race, so the driver will not chip or burr the race surface the new bearing rides on. The same discs drive outer axle seals and hub seals flush without denting the metal case. Check the race is fully seated with a feeler gauge at the shoulder before installing the bearing; a race that is not bottomed will throw preload off and wipe out the new bearing.
| Pieces | 13 (12 driver discs + handle) |
| Driver range | 1.585 in. to 4.625 in. (39.8 mm to 117.5 mm) |
| Material | Aluminum alloy discs |
| Handle | Anti-vibration handle with plastic grip |
| Uses | Wheel bearing races, axle seals, hub seals |
| Storage | Fitted carry case |
| Weight | 9.35 lb |
| Model | ST165122-1 |
