When fleet managers and parts distributors source brake shoes for American heavy trucks, Meritor part numbers are the universal language of the industry. This guide provides a comprehensive cross-reference chart for the most common Meritor brake shoe part numbers.
When fleet managers and parts distributors source brake shoes for American heavy trucks, Meritor part numbers are the universal language of the industry. Whether you're maintaining a Kenworth T680, a Peterbilt 389, or a Freightliner Cascadia, understanding the Meritor brake shoe numbering system — and knowing which aftermarket alternatives offer equivalent performance — can significantly reduce your procurement costs without compromising safety.
Understanding Meritor Brake Shoe Part Numbers
Meritor (formerly Rockwell) uses a standardized numbering system for its brake shoes. The four-digit number (e.g., 4515, 4551) refers to the shoe geometry and axle application, while the suffix (Q, E, etc.) indicates the lining type or kit configuration.
The most widely used Meritor brake shoe sizes in North American heavy trucking are 16.5" × 7" and 15" × 4", covering steer, drive, and trailer axle applications.
Meritor Brake Shoe Cross Reference Chart
| Meritor Part No. | Shoe Size | Axle Position | Compatible Trucks |
|---|---|---|---|
| 4515Q | 16.5" × 7" | Drive/Trailer | Kenworth, Peterbilt, Freightliner, Mack |
| 4551Q | 16.5" × 7" | Drive/Trailer | International, Western Star, Volvo VNL |
| 4707Q | 16.5" × 5" | Steer | Kenworth T680, Peterbilt 579 |
| 4709Q | 16.5" × 5" | Steer | Freightliner Cascadia, International LT |
| 4721Q | 16.5" × 7" | Drive | Mack Anthem, Volvo VNL 860 |
| 4728Q | 16.5" × 7" | Trailer | Great Dane, Wabash, Utility trailers |
| 4732Q | 15" × 4" | Steer/Drive | Medium-duty trucks, school buses |
| 4515E | 16.5" × 7" | Drive/Trailer | Same as 4515Q, Eaton axle variant |
Key Specifications to Match When Cross-Referencing
When sourcing aftermarket brake shoes as a Meritor replacement, there are five critical dimensions that must match exactly:
1. Shoe Length and Width — This is the primary identifier. A 16.5" × 7" shoe cannot be substituted with a 16.5" × 5" shoe, even on the same truck model.
2. Cam Hole Diameter — The hole that accepts the S-cam must match precisely. Standard sizes are 1.25" and 1.5".
3. Anchor Pin Hole Diameter — Typically 1.25" for North American heavy trucks.
4. Web Thickness — Affects structural rigidity and heat dissipation. Standard is 0.44" for most Class 8 applications.
5. Lining Grade — For highway use, a lining with a friction coefficient of 0.38–0.45 is standard.
Why Fleets Choose Aftermarket Meritor-Compatible Brake Shoes
The North American commercial truck aftermarket is a mature, competitive market. Fleet operators and independent repair shops routinely use aftermarket brake shoes that meet or exceed OEM specifications.
Cost Efficiency: Genuine Meritor brake shoe kits typically retail between $85–$120 per axle set. High-quality aftermarket alternatives from established manufacturers like PFZD are available at 40–60% lower cost at equivalent performance levels.
Supply Availability: OEM parts can face supply chain delays. Established aftermarket suppliers maintain large inventory buffers to ensure consistent availability.
PFZD Aftermarket Brake Shoes: Meritor-Compatible Product Line
PFZD BrakeShoe manufactures a complete range of Meritor-compatible brake shoes from our facility in Gucheng County, Hebei Province, China. Our American-series product line covers all major Meritor part numbers used in Class 6–8 trucks.
Our manufacturing standards include:
- ▸Dimensional tolerances within ±0.5mm of OEM specifications
- ▸Friction material tested to FMSI standards
- ▸Heat treatment of shoe table for consistent lining adhesion
- ▸100% dimensional inspection before shipment
For fleet operators, distributors, and importers sourcing Meritor-compatible brake shoes in volume, PFZD offers MOQ from 50 sets per part number, 15–30 day lead time, and ISO 9001:2015 certification.
Contact our sales team at [email protected] or via WhatsApp at +86 181 0328 2239 to request a price list.