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Dexter 7,200 - 15,000 lb Trailer Axles Brake Magnet Kit for 12-1/4" Electric Brakes, K71-378-00, After Jun 1992


Regular price $72.49 USD
Shipping calculated at checkout.

Care information

To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:

  • Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
  • Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
  • For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
  • Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
  • Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
  • After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
  • If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.

Delivery and Shipping

Handling Time: Orders ship out within 1 business day after payment is received.

Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.

Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).

Tracking: A tracking number will be provided once your order is dispatched.

This brake assembly fits most standard 7,000 lb trailer axles that use 12" × 2" electric brakes with a 5-bolt mounting flange. Please verify your axle rating and brake dimensions before ordering. If you're unsure, send us your axle tag or hub information and we'll help confirm compatibility.
Yes. It is compatible with many standard Dexter, Lippert, Rockwell American, AL-KO, and other 7,000 lb trailer axles that use a standard 12" × 2" brake assembly. Always verify your axle specifications before purchasing.
Yes. This is a self-adjusting electric brake assembly, which automatically maintains proper brake shoe clearance during normal operation. This reduces maintenance and helps provide consistent braking performance.

PRODUCT OVERVIEW

Replace a worn brake magnet with the Dexter K71-378-00 Electric Trailer Brake Magnet Kit. Designed specifically for Dexter 12-1/4" electric brake assemblies in the 7.2K-15K range manufactured after June 1992, this kit provides the magnet and retaining components needed for compatible heavy-duty trailer brake service. 

The kit includes the 042-131-00 magnet assembly with red/black wire, along with the 046-117-00 magnet spring and 027-050-00 magnet retainer. These components provide a direct replacement for the corresponding magnet hardware used in compatible Dexter 12-1/4" electric brake assemblies.

Designed for brake maintenance and repair, the K71-378-00 allows the magnet components to be replaced without purchasing an entire brake assembly when the remaining brake components are still serviceable. For correct fitment, verify that your brake is a Dexter 12-1/4" electric brake in the 7.2K-15K application range and was manufactured after June 1992 before ordering.

WHAT'S INCLUDED

1 x  Magnet Assembly(red wire)(042-131-00)

1 x Magnet Spring (046-117-00)

1 x Magnet Retainer (027-050-00)

SPECIFICATIONS:

Brand: Dexter

Product type: Electric Trailer Brake Magnet Kit

MPN: K71-378-00

Brake type: Electric trailer brake

Brake diameter: 12-1/4"

Brake application range: 7,200 lb to 15,000 lb applications

Manufacturing compatibility: Fits Dexter brake assemblies manufactured after June 1992

Magnet assembly part number: 042-131-00

Magnet wire: Red/Black wire

Magnet spring part number: 046-117-00

Magnet retainer part number: 027-050-00

Kit contents: 1 magnet assembly, 1 magnet spring and 1 magnet retainer

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Marco Alvarez
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Un reemplazo sencillo que funciona bien y cumple con las expectativas.

  • 5 stars: 1 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Marco Alvarez
Cliente satisfecho

Un reemplazo sencillo que funciona bien y cumple con las expectativas.