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Axles & Suspension

Dexter 12-1/4" x 5" Right-Hand Electric Brake Shoe & Lining Kit – 12K (BP04-370)

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SKU: BP04-370
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Product Info

R & P Carriages - Need a Trailer Part
Trailer Brakes / Electric Drum Brake Components

Dexter 12-1/4" x 5" Right-Hand Electric Brake Shoe & Lining Kit – 12K (BP04-370)

Part # BP04-370  |  Right Hand / Passenger Side

Restore braking performance on your heavy-duty trailer with the BP04-370 replacement brake shoe and lining kit. Designed to service the right-hand (passenger-side) Dexter 12-1/4" x 5" electric drum brake assembly used on 12,000 lb trailer axles with stamped steel backing plates.

This kit replaces the worn friction shoes and linings for one wheel without requiring replacement of the complete backing plate assembly. It is associated with Dexter right-hand electric brake assembly 23-443. Correct brake dimensions, backing plate construction, and orientation must be confirmed before ordering.

12-1/4" × 5"
Brake Size
12,000 LB
Axle Application
RH
Passenger Side

What's in the Box?

ITEM DESCRIPTION
Brake Shoes & Linings Replacement friction shoes for one right-hand brake assembly
Shoe Hold-Down Hardware Hold-down kit for one wheel
One-wheel service kit: This is not a complete electric brake backing plate assembly. Brake drum, magnet, backing plate, wheel bearings, seals and unrelated brake hardware are not included.

Knowledge Hub | Brake Fitment & Replacement

Confirm your backing plate: BP04-370 is listed for the Dexter 12-1/4" x 5" electric brake system with a stamped backing plate. Dexter also manufactures cast-backing-plate brake assemblies. These configurations can require different shoe and lining kits.

Confirm brake dimensions: The 12-1/4" dimension is the nominal installed drum brake diameter. The 5" measurement is the nominal shoe lining width. Both measurements matter when selecting replacements.

Confirm left versus right: This kit services the passenger-side brake assembly. Right-hand and left-hand configurations are not interchangeable simply because their dimensions match.

Inspect the remaining brake components: During shoe replacement, inspect the brake drum friction surface, actuating mechanism, adjuster, return springs, magnet and backing plate. Replace damaged or excessively worn components as required by the manufacturer's service procedures.

Installation: Follow Dexter's specified brake service procedures, including proper shoe orientation, hardware installation, drum inspection and final adjustment. Verify satisfactory operation before returning the trailer to service.

Features & Benefits

  • Heavy-duty brake application: Services Dexter 12-1/4" x 5" electric drum brakes on specified 12K trailer axles.
  • Right-hand configuration: Designed for the passenger-side wheel-end assembly.
  • Stamped backing plate compatibility: Intended for the specified Dexter stamped-plate brake configuration.
  • One-wheel replacement coverage: Supplies the brake shoes and linings required to service one compatible wheel.
  • Component-level maintenance: Replaces worn friction components without automatically requiring a new complete brake assembly.

Technical Specifications

Part Number BP04-370
Product Type Electric Brake Shoe & Lining Kit
Brake Diameter 12-1/4"
Brake Width 5"
Axle Application 12,000 lb Dexter
Brake Type Electric Drum
Position Right Hand / Passenger Side
Backing Plate Type Stamped Steel
Associated Brake Assembly Dexter 23-443
Service Coverage One Wheel
Application Family Dexter Heavy-Duty Trailer Brakes
R&P Service Insight

Replacing shoes on a heavy-duty trailer? Check both wheel ends on the axle for uneven wear, damaged springs, magnet condition, drum scoring or contaminated linings. Identifying the correct backing plate and assembly number before ordering can save unnecessary installation delays.

Important Fitment Note: BP04-370 is a right-hand electric brake shoe and lining kit for the specified Dexter brake configuration. It is not a universal replacement for every 12-1/4" x 5" brake. Verify stamped versus cast backing plate construction and the existing assembly part number before ordering.
Need Help Confirming Your Brake Parts?
Send us your brake assembly number, axle tag or photos of the existing components.
Call or Text 815-357-3292
R&P Carriages • 270 E. Jackson St. • Seneca, IL 61360
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