Trailer hub bearing replacement kit for compatible 7,000-lb axle hubs using 25580 inner bearing, 25520 inner race, 14125A outer bearing, and 14276 outer race.
The Lippert 2023133983 trailer bearing replacement kit is designed for servicing compatible 7,000-lb trailer axle hubs. It includes the bearing cones, bearing races, grease seal, cotter pin, and tang spindle washer needed for one hub bearing service.
This kit uses a 25580 inner bearing with 25520 inner race and a 14125A outer bearing with 14276 outer race. Match the bearing numbers, race numbers, grease seal size, hub, and spindle before ordering.
Designed for compatible trailer axle hubs rated at 7,000 lbs.
Includes inner and outer bearing cones with matching races
Includes a 2.25" ID double-lip grease seal
Includes cotter pin and tang spindle washer for hub reassembly
Bearing kits should be matched by part numbers and measurements, not axle capacity alone. Before ordering, compare your existing inner bearing, outer bearing, races, grease seal, hub, and spindle to the kit specifications.
14125A is the outer bearing cone. The matching outer race cup is 14276. 25580 is the inner bearing cone. The matching inner race cup is 25520.
1. Confirm Fit: Match the existing bearing numbers, race numbers, grease seal size, hub, and spindle before replacement. 2. Remove Hub: Safely lift and support the trailer, then remove the wheel, dust cap, cotter pin, spindle nut, washer, and hub assembly. 3. Replace Components: Remove old bearings, races, and grease seal, then install the new races, packed bearings, and seal. 4. Reassemble Hub: Reinstall the hub with the spindle washer, spindle nut, and cotter pin according to axle manufacturer service procedures. 5. Check Operation: Verify proper bearing preload, smooth hub rotation, grease level, and wheel installation before towing. Trailer hub service should be performed by a qualified technician if bearing preload, race installation, or hub service procedures are uncertain.
• Inner bearing cone — 25580 • Inner bearing race — 25520 • Outer bearing cone — 14125A • Outer bearing race — 14276 • 2.25" ID double-lip grease seal • Cotter pin • Tang spindle washer
Lippert Customer Support: Phone: 432-LIPPERT (432-547-7378) Website: lippert.com For fitment help, compare the original hub bearing numbers, grease seal size, axle rating, and spindle application before ordering.