Dexter 12-1/4" x 3-3/8" Hydraulic Brake Assemblies – 8,000 lb Axle – Left & Right – 4 Bolt
Dexter Part Numbers: 023-402-00 (Left) & 023-403-00 (Right)
Complete set of two genuine Dexter 12-1/4" x 3-3/8" hydraulic brake backing plate assemblies for 8,000 lb trailer axles. Includes one left-hand (driver side) and one right-hand (passenger side) brake assembly.
Designed for heavy-duty hydraulic drum brake systems using surge or electric-over-hydraulic actuators. Mounts to standard 4-bolt brake flanges.
These assemblies are for hydraulic systems only and cannot be used with electric brake systems.
Included
- 1 – Left Hand Hydraulic Brake Assembly (023-402-00)
- 1 – Right Hand Hydraulic Brake Assembly (023-403-00)
Features
- 12-1/4" diameter x 3-3/8" wide brake assemblies
- Designed for 8,000 lb axle applications
- Hydraulic duo-servo design
- Includes both left and right assemblies
- 4-bolt mounting flange configuration
- Genuine Dexter components
R&P Knowledge Hub
Hydraulic brake assemblies use fluid pressure from a surge actuator or electric-over-hydraulic system to expand the brake shoes against the drum surface.
The duo-servo design provides self-energizing braking in both forward and reverse directions, which improves stopping performance under heavy loads. Because brake assemblies are side-specific, a complete axle requires both a left and right unit — this listing includes both.
Before ordering, verify brake size (12-1/4" x 3-3/8"), axle rating (8,000 lb), and 4-bolt flange configuration.
Specifications
| Specification | Detail |
| Manufacturer | Dexter |
| Brake Diameter | 12-1/4 Inches |
| Brake Width | 3-3/8 Inches |
| Axle Capacity | 8,000 lbs |
| Mounting Pattern | 4 Bolt Flange |
| Configuration | Left & Right Pair |
| Brake Type | Hydraulic Duo-Servo |
Verify specifications before installation.
