Dexter 12K Hydraulic Brake Assembly – 12.25" x 5" – 7 Bolt – Left Hand – Forward Self Adjust
Part Number: K23-408-00
Genuine Dexter hydraulic brake backing plate assembly designed for 12,000 lb trailer axles using 12.25" x 5" brake drums. This unit mounts using a 7-bolt flange pattern and is configured for the left-hand (driver side) position.
Features
| Feature | Detail |
| Brake Type | Hydraulic Duo-Servo |
| Adjustment Style | Forward Self-Adjusting (FSA) |
| Brake Size Compatibility | 12.25" x 5" |
| Axle Rating | 12,000 lb |
| Mounting Configuration | 7-Bolt Flange |
| Orientation | Left Hand (Driver Side) |
| Manufacturer | Dexter |
R&P Knowledge Hub
Hydraulic drum brake assemblies use wheel cylinders to apply pressure to brake shoes when fluid is delivered from the master cylinder. Duo-servo designs allow both shoes to assist braking force under load. Forward self-adjusting mechanisms maintain proper shoe-to-drum clearance as linings wear. Always confirm drum size, bolt pattern, axle rating, and correct left or right orientation before ordering.
Hydraulic drum brake assemblies use wheel cylinders to apply pressure to brake shoes when fluid is delivered from the master cylinder. Duo-servo designs allow both shoes to assist braking force under load. Forward self-adjusting mechanisms maintain proper shoe-to-drum clearance as linings wear. Always confirm drum size, bolt pattern, axle rating, and correct left or right orientation before ordering.
Specifications
| Specification | Detail |
| Part Number | K23-408-00 |
| Brake Diameter | 12.25" |
| Brake Width | 5" |
| Axle Rating | 12,000 lb |
| Mounting Pattern | 7 Bolt |
| Adjustment | Forward Self-Adjusting |
| Position | Left Hand (Driver Side) |
Verify specifications before installation.