Electric Trailer Brake Service Part
Dexter Electric Trailer Brake Vented Magnet Kit for 8K–16K AL-KO Backing Plates
Replacement electric brake magnet kit for compatible 8,000 lb to 16,000 lb AL-KO / Hayes style electric brake assemblies. A practical repair option when the magnet is worn but the complete backing plate does not need replacement.
Part Number: K71-863-00 8K–16K Electric Brake Applications One Magnet Service Kit
Key Measurements & Specs
| Specification |
Detail |
| Part Number / SKU |
K71-863-00 |
| Brand Reference |
AL-KO / Dexter style replacement magnet kit |
| Product Type |
Electric trailer brake magnet service kit |
| Brake Rating Range |
Designed for compatible 8K to 16K AL-KO / Hayes electric brake applications |
| Magnet Thickness |
Approximately 1-1/8" thick when new |
| Quantity Included |
One magnet kit for one compatible brake assembly / backing plate |
Fitment / Application
| Category |
Details |
| Trailer System |
Electric trailer drum brake system |
| Primary Fit |
Compatible 8K–16K AL-KO / Hayes electric brake assemblies where K71-863-00 is the correct magnet kit |
| Common Brake Size Reference |
Often associated with 12-1/4" AL-KO / Hayes electric brake applications; verify your brake assembly before ordering |
| Fitment Method |
Match part number, magnet style, wire routing, backing plate style, and brake rating before installation |
| Important Note |
This is a magnet service kit only. It is not a complete brake backing plate assembly. |
Top Features
| Feature |
Buyer Benefit |
| Replacement Magnet Kit |
Allows magnet replacement without automatically replacing the complete brake assembly |
| Vented Magnet Design |
Supports heavy-duty electric brake applications where heat management matters |
| Service Hardware Included |
Includes magnet-related retaining and strain-relief hardware needed for the repair |
| Heavy-Duty Brake Range |
Intended for compatible 8K, 10K, 12K, 15K, and 16K class AL-KO / Hayes electric brake systems |
Overview
The K71-863-00 electric brake magnet kit is used to replace a worn magnet on compatible 8K to 16K AL-KO / Hayes style electric brake backing plates. This kit is a focused service repair part for customers who need to restore magnet contact and electrical brake function without purchasing a full brake assembly when the rest of the backing plate is still serviceable.
R&P Service Insight
Brake magnets wear against the inside armature surface of the hub drum. When the magnet face is worn, damaged, uneven, or weak, braking performance can suffer even if the shoes and hardware still appear usable.
-
Check Magnet Wear: Compare the old magnet face and thickness to the new replacement before installation.
-
Inspect Drum Surface: A damaged or grooved armature surface can shorten the life of the new magnet.
-
Verify Wiring: Confirm the magnet leads, strain relief, and wire routing are secured away from moving brake parts.
R&P Knowledge Hub
Compatibility: Use this kit only where K71-863-00 is the correct replacement magnet kit for the brake assembly. AL-KO / Hayes 8K–16K application references should be verified against the existing backing plate and brake system.
Vehicle / System Fit: Heavy-duty electric trailer drum brake assemblies using compatible AL-KO / Hayes style backing plates.
Installation Notes: Confirm the magnet style, wire lead routing, retainer location, and strain relief arrangement before removing the old magnet. Replace damaged retaining hardware during installation.
Performance Insight: A worn brake magnet may reduce brake engagement or cause inconsistent braking. Replacing the magnet can be a cost-conscious repair when the shoes, adjuster, springs, backing plate, and drum surface are still in acceptable condition.
Brand & Fitment Note
Selling Brand / Application Reference: AL-KO / Dexter style K71-863-00 electric brake magnet kit.
Application Reference: AL-KO, Hayes, and Dexter references are used for fitment identification only. Confirm your existing brake assembly requires part number K71-863-00 before ordering.
What This Means: This listing is for one electric brake magnet service kit, not a complete brake assembly, not a hub drum, and not a full axle brake conversion kit.
Before Ordering: Verify brake rating, backing plate style, magnet shape, wire routing, and included hardware requirements before installation.
R&P Repair Insight
Replacing only the magnet can save money when the rest of the brake assembly is still mechanically sound. However, a new magnet will not correct damaged brake shoes, weak springs, a seized adjuster, broken wiring, a worn drum armature surface, or a failing brake controller circuit.
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Electrical Check: Inspect the magnet wires and brake circuit before assuming the magnet is the only failure point.
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Mechanical Check: Confirm the shoes, springs, adjuster, and backing plate hardware are still usable.
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Drum Check: Inspect the magnet contact surface inside the drum. Replace or service damaged drums as needed.
Features
Direct Service Repair
Designed to replace the worn electric brake magnet on compatible heavy-duty AL-KO / Hayes style brake assemblies.
Helps Avoid Full Assembly Replacement
Useful when the brake assembly is otherwise serviceable and the magnet is the component that needs replacement.
Includes Magnet Hardware
Kit includes the magnet assembly and related retaining / strain-relief hardware used during installation.
Heavy-Duty Brake Application
Built for compatible 8,000 lb to 16,000 lb class electric brake applications where K71-863-00 is specified.
Included Components
| Quantity |
Item |
| 1 |
Electric brake magnet assembly |
| 1 |
Magnet spring / retaining spring hardware |
| 1 |
Retaining clip / retainer hardware |
| 1 |
Strain relief / wire support hardware |
| 1 |
Crimp ring / retaining ring hardware as supplied with the kit |
Important Fitment Note: This is one replacement magnet kit for compatible 8K–16K AL-KO / Hayes style electric brake assemblies. Confirm part number K71-863-00, brake rating, backing plate style, magnet style, wire routing, and drum condition before installation. This kit does not include a complete brake backing plate, brake shoes, hub drum, bearings, seals, or mounting hardware unless specifically shown in the included components list above.
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