We will be closed Nov 27–30 for Thanksgiving.
Sales resume Saturday, Nov 29 at 11 PM PST.
Shipping resumes Monday morning, Dec 1.
Thank you — we hope you have a fun and safe holiday!
R & P Carriages

Hours: M–F 9:00AM–5:00PM CST
Sat 9:00AM–3:00PM



Brake Magnet for Dexter 12¼" Brakes (1992-Present) — Replaces K71-378-00 — Fits 7.2K–12K Axles — (77M-1210)

Unbranded

Regular price $25.05

R & P Carriages

Brake Magnet Kit — Fits Dexter 12¼" Brakes (1992–Present)

Part Number: 77M-1210


Fits all Dexter 12¼" electric brakes after 1992.
Also fits most 12,000 lb trailer axles using 12¼" brake assemblies.
Includes brake magnet, new spring, and clip.

Wire color may vary — see notes below.

Fitment

Compatible With
• Dexter 12¼" Electric Brakes (1992–Present)
• 7.2K, 8K, 10K, 12K, 15K Brake Systems
• 12¼" × 2.5" through 12¼" × 5" brake assemblies
• Most 12,000 lb trailer axles
• Direct replacement for older Dexter red-wire magnets

Important Notes

  • 2017+ Standardization: Dexter and Rockwell 12¼" brake drums now use the same magnet.
  • We are working through existing stock; as inventory rotates, all shipments will use the newer Red/Black wire magnet.
  • Fits Dexter axles only.
  • Wire color may vary as old inventory sells down.

In the Box

Item Qty
Brake Magnet 1
Spring 1
Retaining Clip 1

Specifications

Spec Details
Brake Size 12¼"
Compatibility 7.2K–15K Dexter / Rockwell brake systems
Wire Leads 2-wire lead, color varies
Dimensions Standard Dexter 12¼" magnet footprint

VIEW ALL BRAKE MAGNET OPTIONS


R & P Carriages • 270 E Jackson Street • Seneca, IL
Family-owned • Installers on staff • Over 200 trailers in inventory
Thank you for supporting a small business!

Shipping

We ship quickly and carefully, with tracking provided on every order. Most items ship the same or next business day. Your parts will arrive safely and on time, ready to use.

Returns & Guarantee

Your satisfaction is guaranteed. Returns, refunds, and exchanges are accepted — no hassle. We stand behind every part we sell, so you can purchase with confidence.

Committed to Customer Service

At R and P Carriages, we believe in treating our customers like family. Whether you need a small replacement part or a complete trailer service, we’re here to help with friendly, expert support every step of the way.