Dexter 12-1/4 x 5 Hydraulic Duo-Servo Brake Pair – 12K Axle K23-408-00 K23-409-00
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Brand | Model / Engine | Application Notes |
|---|---|---|
| Dexter | 12K axle brake applications | 12-1/4 x 5 hydraulic duo-servo |
| Trailer | 7-bolt brake flange applications | Verify axle/brake specification |
Product Overview
The pair replaces both brake assemblies on one axle end set, making it useful when shoes, wheel cylinders, adjusters or backing-plate hardware are heavily worn or corroded. Replacing complete assemblies can simplify a major brake overhaul compared with rebuilding each component separately.
Dexter's catalog identifies K23-408-00 as the left-hand 12K hydraulic assembly and K23-409-00 as the right-hand assembly. These are 12K assemblies; the older title's 15K wording was not supported by Dexter's application chart.
Key Features & Performance
- Complete LH and RH hydraulic brake assemblies for one axle
- 12-1/4 x 5-inch drum-brake size
- Duo-servo, forward self-adjusting design
- Dexter K23-408-00 left and K23-409-00 right references for 12K applications
Technical Specifications
| Part type | Hydraulic drum brake assembly pair |
|---|---|
| Brake size | 12-1/4 in x 5 in |
| Axle rating | 12,000 lb per pair application |
| Adjustment | Forward self-adjusting duo-servo |
| Mounting | 7-bolt flange |
Part Numbers & Cross-References
K23-408-00 (LH), K23-409-00 (RH), 023-408-00, 023-409-00
Frequently Asked Questions
What should I verify before ordering?
Confirm the axle uses 12-1/4 x 5 hydraulic duo-servo brakes and a 7-bolt flange; these part numbers are not the 15K assemblies.
Is this an OEM part?
No. This listing is a replacement component. Manufacturer names, model names and reference numbers are used for identification and compatibility; compare the original part and equipment details before ordering.