Description
Remanufactured Alliance 4720-Q20 brake shoe kit for Meritor Q-Plus 16.5″ × 5″ foundation brakes rated to 20,000 lb axle capacity. Each kit ships as a relined pair of 4720-pattern shoes with standard friction lining and the matching hardware pack — drop-in service for Class 7/8 highway tractors and vocational chassis on steer or trailer axles using Meritor 4720Q. $60 core charge applies (returnable cores).
Signs You Need a New Brake Shoe Kit
- Lining worn to or below the wear-indicator step
- Cracked, glazed, or contaminated friction surface
- Pulling, fade, or loss of stopping force
- Squeal, groan, or metal-on-metal noise from the wheel-end
- Out-of-service annual / DOT inspection finding (49 CFR 393.47)
Specifications
| Manufacturer | Alliance (Daimler Truck North America) |
|---|---|
| Part Number | 4720-Q20 (Standard friction) |
| Part Type | Remanufactured Brake Shoe Kit (axle-set pair) |
| Brake Pattern | Meritor Q-Plus 4720Q |
| Brake Size | 16.5″ × 5″ |
| Axle Rating | 20,000 lb (20K) |
| Friction | Standard, FMVSS 121 compliant |
| Condition | Remanufactured (relined on inspected shoe core) |
| Core Charge | $60 (returnable) |
Kit Includes
- Relined Meritor 4720-pattern brake shoe (qty 2)
- Brake hardware pack — return springs, anchor pin bushings, retainer washers, retainer clips
Cross References
This kit replaces or is equivalent to the following part numbers:
- Meritor: 4720Q, 4720QP (Q-Plus pattern, 20K applications)
- Alliance: 4720-Q20
- Also known as: KSMA4720Q20, NBS204720Q (industry crossover SKUs)
Applications
This kit fits Meritor Q-Plus 4720 16.5″ × 5″ foundation brake systems rated to 20,000 lb axle capacity. Common installations:
- Class 7 / 8 highway tractor steer axles (12K–13.2K front) using 4720Q 16.5″ × 5″
- Trailer axles rated to 20K with Meritor Q-Plus brakes
- Vocational and dump-truck steer axles with 16.5″ × 5″ Q-Plus drum brakes
Verify your brake shoe pattern (4720Q vs 4707Q vs 4515Q), drum size (16.5″ vs 15″), shoe width (5″ vs 6″ vs 7″), and axle rating before ordering. Always replace shoes in axle-set pairs and machine or replace the drums for proper bedding.
