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57_2f8f591d-9585-4f01-8bb7-925b35197d4c - Northline Parts

Dexter 12-1/4 x 5 Hydraulic Duo-Servo Brake Pair – 12K Axle K23-408-00 K23-409-00

SKU: NLT2T00335
$605.09 In Stock
$605.09
Sale price  $605.09 Regular price 
Ships for free in 2–4 business days.
This is a left-and-right pair of 12-1/4-inch x 5-inch hydraulic duo-servo forward self-adjusting brake assemblies for Dexter 12,000-lb axle applications.
Estimated delivery between
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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.

Compatible equipment / model
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.

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