Dexter K71-378-00 Magnet Kit for 12 1/4 x 5 15K Electric Brakes (After 6/92)

The Dexter K71-378-00 Magnet Kit is a complete replacement magnet kit for Dexter 12 1/4 inch x 5 inch 15K electric trailer brakes manufactured after 6/92. The kit is built for boat trailer axles running Dexter's 15K electric brake assemblies and supplies everything needed to service one brake magnet, including the magnet retainer and the magnet assembly with blue wire lead. Each of the four component part numbers in the kit ships in a quantity of one, so the set is ready to install as a matched group rather than sourcing individual pieces separately.

This kit is intended for trailer owners and service techs replacing worn or failed electric brake magnets on Dexter 12 1/4 x 5 15K brake assemblies, restoring proper electric brake engagement and stopping performance. Because it is sold as a complete kit under a single Dexter part number, it helps ensure the retainer and magnet assembly are correctly matched for this brake size and vintage.

Specifications

• Brand: Dexter
• Manufacturer Part Number: K71-378-00
• Product Category: Boat Trailer Brake Magnet Kit
• Fitment: Dexter 12 1/4 inch x 5 inch 15K electric brakes (after 6/92)
• Kit Contents: 4 components, 1 each - Magnet Retainer (027-050-00), Magnet Assembly - blue wire (042-131-00), 046-117-00, 059-511-00
• Weight: 2 pounds
• Product Dimensions: 18 x 10.63 x 9.13 inches
• UPC: 876983001286

Fitment

• Dexter 12 1/4 inch x 5 inch 15K electric brakes (after 6/92)

Replaces (OEM)

• No specific OEM cross-reference numbers listed for this part.

Frequently Asked Questions

What does the Dexter K71-378-00 magnet kit fit? The K71-378-00 magnet kit fits Dexter 12 1/4 inch x 5 inch 15K electric trailer brakes manufactured after 6/92.

What is included in this magnet kit? The kit includes four Dexter components, one of each: a magnet retainer (027-050-00), a magnet assembly with blue wire (042-131-00), part number 046-117-00, and part number 059-511-00.

Does the K71-378-00 kit use a red or blue wire magnet? The magnet assembly included in the K71-378-00 kit is a blue wire magnet assembly (Dexter part 042-131-00).

How much does the Dexter K71-378-00 magnet kit weigh? The K71-378-00 magnet kit weighs 2 pounds.

What are the dimensions of the K71-378-00 magnet kit packaging? The K71-378-00 ships in packaging measuring 18 x 10.63 x 9.13 inches.

Will the K71-378-00 kit work on 15K electric brakes made before 6/92? Dexter specifies the K71-378-00 magnet kit for 12 1/4 inch x 5 inch 15K electric brakes made after 6/92; brakes produced before that date are not covered by this fitment.

Is this kit for one brake or a pair? The K71-378-00 is a single magnet kit for one brake assembly; each component in the kit ships in a quantity of one.

Is the K71-378-00 a genuine Dexter part? Yes, K71-378-00 is the Dexter part number for this magnet kit, and every component inside carries its own Dexter part number.

What is the UPC for the Dexter K71-378-00 magnet kit? The Dexter K71-378-00 magnet kit carries UPC 876983001286.

Can I buy just the magnet retainer or magnet assembly separately? The K71-378-00 is sold as a complete kit containing the magnet retainer, magnet assembly, and two additional components together under a single Dexter part number.