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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

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.

PRODUCT OVERVIEW

This electric trailer brake magnet kit is engineered to restore and maintain your trailer's braking performance, making towing and stopping safer and more efficient. Rated for heavy-duty 12-1/4" electric brake assemblies, it's ideal for a wide range of high-capacity operations including 7,200 lbs, 8,000 lbs, 9,000 lbs, 10,000 lbs, 12,000 lbs, and 15,000 lbs trailer axles found on commercial dump trailers, heavy equipment haulers, gooseneck flatbeds, and industrial transport trailers where maximum braking power is required.

Please note that this premium replacement kit is specifically designed to fit Dexter 12-1/4" electric brake assemblies manufactured after June 1992. Constructed with high-quality components, it is built to withstand extreme heat and intense vibration inside the heavy-tonnage drum environment. Replacing just the worn-out magnet components saves time and money, eliminating the need to purchase and install an entire backing plate assembly. The precision-wound commercial-grade internal electromagnet provides smooth, controlled stopping power when synchronized with your electronic brake controller.

Designed for a seamless direct-fit replacement, this shop-grade kit includes a heavy-duty magnet spring and a secure steel retaining clip to keep the magnet correctly positioned against the armature plate. All components are manufactured to strict original equipment standards, ensuring an accurate fit and long-lasting structural durability for extended heavy-duty commercial towing and transport operations.

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)

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