Set of TWO, X-Type Backing Plate, Brake Flanges for 7.2K & 8K Axles
This listing is for a pair of backing plate brake flanges with a 2.53" pilot hole, 4-hole mounting pattern, and X-type configuration for compatible 7.2K and 8K trailer axle brake applications.
Overview
These X-type backing plate brake flanges are used as the mounting interface for compatible trailer brake backing plates. The flange dimensions, pilot hole, bolt hole count, and axle rating range should be matched carefully against the axle and brake assembly being serviced before welding or installation.
R&P Service Insight
Brake flanges are small parts with a major role: they determine whether the backing plate mounts square, centered, and secure to the axle tube. Confirming the flange pattern before ordering helps prevent brake alignment problems during service.
- Sold as a Pair: Includes two matching brake flanges for left/right or two-position service needs.
- Pattern Check: Match the 2.53" pilot hole, 4-hole layout, and X-type shape before installation.
- Axle Match: Intended for compatible 7.2K and 8K axle applications where the measurements match.
R&P Knowledge Hub
Compatibility: Designed for compatible trailer brake applications using a 4-hole X-type brake flange with a 2.53" pilot hole.
Vehicle / System Fit: Trailer axle brake mounting applications commonly associated with 7.2K and 8K axle setups.
Installation Notes: Brake flanges typically require proper positioning, alignment, and welding by a qualified installer or axle service professional.
Performance Insight: Proper flange alignment is critical because the brake backing plate must sit square to the drum and spindle centerline.
R&P Repair Insight
Before replacing or adding brake flanges, compare the original flange and brake assembly dimensions carefully. A flange can appear close visually while still having the wrong pilot hole, bolt spacing, thickness, or orientation for the brake backing plate.
- Confirm Pilot Hole: This listing uses a 2.53" pilot / center hole.
- Confirm Mounting Holes: This flange has four mounting holes, each listed at 0.51".
- Confirm Axle Rating: Listed for 7.2K and 8K axle applications where the flange dimensions match.
Features
Pair Pack for Service Work
Includes two brake flanges, making it a practical option for paired brake service or axle repair work.
X-Type Flange Configuration
X-type brake flange design for compatible trailer brake backing plate applications.
2.53" Pilot Hole
Center pilot hole is listed at 2.53" for matching against the axle and brake mounting setup.
7.2K / 8K Application Range
Intended for compatible 7,200 lb. and 8,000 lb. axle brake flange applications where the specifications match.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 004-055-00-X2 |
| Base Flange Reference | 004-055-00 (Single) |
| Product Type | Backing Plate Brake Flange |
| Quantity Included | Pair / 2 flanges |
| Flange Style | X Type |
| Pilot / Center Hole | 2.53" |
| Overall Shape / Size | 4.62" square |
| Mounting Holes | 4 holes |
| Mounting Hole Diameter | 0.51" each |
| Thickness | 0.425" |
| Application | For compatible 7.2K and 8K axle brake applications |
Fitment / Application
| Category | Details |
|---|---|
| System | Trailer axle brake mounting flange |
| Primary Fit | Compatible 7.2K / 8K axle brake flange applications |
| Mounting Pattern | 4-hole X-type flange pattern |
| Buyer Check | Verify pilot hole, flange shape, hole count, hole diameter, thickness, brake backing plate pattern, and axle application before ordering or installation. |
Included Components
| Quantity | Item |
|---|---|
| 2 | 004-055-00 X-Type Backing Plate Brake Flanges |
| Not Included | Brake backing plates, drums, hubs, bearings, seals, axle tube, welding materials, and installation hardware unless separately shown or stated. |
