Match the part number, measurements and connection points that apply to your trailer.
| Part Number | Match the number stamped on the original bearing or seal. |
|---|---|
| Dimensions | Measure the mating surfaces when a number is unavailable. |
| Hub / Axle | Use capacity as context, not as the only fitment check. |
One-Wheel Disc Brake Assembly Kit
Complete hydraulic disc brake service kit designed to rebuild or replace one side of a heavy-duty 12,000 lb axle. This kit includes the rotor, caliper, mounting hardware, hub components, bearings, seal, and brake hardware required for a single wheel assembly.
Kit Scope
• Services one side of the axle
• Includes hub, rotor, caliper, bearings, seal, and hardware
• Intended for 12K heavy-duty disc brake axles
| Rotor | 11" OD, 5.25" pilot bore, 8-bolt on 7.5" circle (070-006-01-RP) |
|---|---|
| Caliper | 10K–12K hydraulic, Dexter 089-002-02 style (BP18-045) |
| Brake Pads | Lot of 2 (4 pads total), Dexter K71-180-00 compatible (TW-7020-LOTOF2) |
| Hub | 12.25" × 5" hub (99-86512-H) |
| Bearings | Inner: 2.625" ID (3984) Outer: 2.25" ID (28682) |
| Seal | 3.12" × 4.506" oil seal (10-3125-08) |
| Wheel Studs | 8 × 1/2"-20, 2.53" long, Grade 8 (025-014-00) |
| Mounting Hardware | (2) Caliper bolts 5/8" × 5" Grade 8 (7-186) (2) 1/2"-13 lock nuts (006-125-00) (8) 5/8"-18 flange nuts (006-058-00) |
| Additional Components | (2) Anti-rattle springs (046-105-00) (1) Yoke mount plate (090-002-02-RP) (8) 1/2"-20 u-bolt nuts (12N) |
Verify axle rating, hub dimensions, bearing sizes, and brake compatibility before installation.
