10k Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Left Hand (Driver's Side)

  • 10K Heavy Duty Electric Brake Assembly – 12.25x4 Left Hand (Driver's Side)
  • 10K Heavy Duty Electric Trailer Brake Assembly (Pair) – 12.25x4 Right Hand & Left Hand
  • 10K Heavy Duty Complete Electric Trailer Brake Assembly – 12.25x4 (Right & Left Hand)
  • Buy Bulk Trailer Parts – Brake Assemblies, Hubs, Bearings, Grease Caps & More
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10K Heavy Duty Electric Brake Assembly – 12.25x4 Left Hand (Driver's Side)

10k Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Left Hand (Driver's Side)

10k Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Left Hand (Driver's Side)

SKU : 10HDLHBRKAS

Online price only

$132

Online price only

SAVE 0% (833) 910-3416
4.6
Rated 4.6 out of 5 stars
109 Reviews
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10K Heavy Duty Electric Brake Assembly – 12.25x4 Left Hand (Driver's Side)
10K Heavy Duty Electric Brake Assembly – 12.25x4 Left Hand (Driver's Side)

10k Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Left Hand (Driver's Side)

10k Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Left Hand (Driver's Side)

$132
SAVE 0% (833) 910-3416
4.6
Rated 4.6 out of 5 stars
109 Reviews
  • Product Information
  • Reviews

Upgrade your trailer with this premium 12.25" x 4" electric brake assembly, built for 10,000 lb heavy-duty trailer axles. Designed for Dexter Heavy-Duty Trailer Axles, this brake system ensures reliable stopping power and simplified installation.

Note: This brake assembly is not compatible with Rockwell, Texas Pride, or TK Trailer Axles and only fits Dexter Heavy-Duty Axles.

Single Brake Assembly:

  • Size: 12.25" x 4"
  • Capacity: 10,000 lb per axle
  • Side: Driver's Side Only (Left Hand)
  • Bolt Pattern: 7-Bolt Flange
  • Heavy Duty
  • Shipment Specs: 1) 14x14x6 Box @ 19 lbs

Pair Set:

  • (1) Driver Side Brake Assembly – 12.25" x 4"
  • (1) Passenger Side Brake Assembly – 12.25" x 4"
  • Heavy-duty 10K capacity
  • 7-bolt brake flange
  • Shipment Specs: 2) 14x14x6 Box @ 19 lbs

Complete Brake Kit:

  • (1) Driver Side Brake Assembly – 12.25" x 4"
  • (1) Passenger Side Brake Assembly – 12.25" x 4"
  • (1) Quart Axle Oil
  • (2) 10-56 Unitized Oil Seals – 4.506" O.D. / 3.125" I.D.
  • (2) 395S Inner Bearings – 4.331" I.D.
  • (2) 387A Outer Bearings – 2.250" I.D.
  • (2) 394A Inner Races – 4.331" O.D.
  • (2) 382A Outer Races – 2.810" O.D.
  • Shipment Specs: 2) 14x14x6 Box @ 19 lbs 1) 14x14x7 @ 28 lbs

Half Crate (20 Brakes Total):

  • (20) Driver Side Brake Assemblies – 12.25" x 4"
  • (20) Passenger Side Brake Assemblies – 12.25" x 4"
  • Shipment Specs: 1) Crate/Pallet @ 800 lbs

Crate (80 Brakes Total):

  • (40) Driver Side Brake Assemblies – 12.25" x 4"
  • (40) Passenger Side Brake Assemblies – 12.25" x 4"
  • Shipment Specs: 1) Crate @ 1560 lbs

Features:

  • Easy-to-Install: Only 7 bolts and 2 wires required for a full install (hardware sold separately)
  • Rear Adjustment Ports: Make brake adjustments fast and simple
  • Compatibility: Dexter Heavy-Duty Trailer Axles ONLY
  • Durable & Reliable: Built to perform under heavy loads and demanding trailer use
  • 1-Year Manufacturer Warranty for peace of mind

New brake assemblies must be properly burnished to ensure optimal performance:

  • Perform 20–30 brake applications
  • Decelerate from 40 mph to 20 mph each time
  • Allow brakes to cool between applications

Order Your 10K Electric Trailer Brake Assemblies Today
Whether you need a single assembly or crate quantities, The Trailer Parts Outlet provides high-quality, affordable trailer brake parts with fast shipping and top-tier support. If you're unsure about fitment or need help selecting the right setup, contact our experts — we're here to help!

4.6
Rated 4.6 out of 5 stars
Based on 109 reviews
Total 5 star reviews: 88 Total 4 star reviews: 10 Total 3 star reviews: 5 Total 2 star reviews: 1 Total 1 star reviews: 5
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109 reviews
  • RM
    Rick M.
    Verified Buyer
    7 minutes ago
    Rated 5 out of 5 stars
    Good replacement

    Fits good on Featherlight stock trailer,

    Was this helpful?
  • FF
    fisherautoparts f.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    great

    great product, good price, fast delivery

    Was this helpful?
    The Trailer Parts Outlet
    1 week ago

    Thank you for the review, we appreciate your business

  • RF
    Robert F.
    Verified Buyer
    1 month ago
    Rated 3 out of 5 stars
    Works for an International 12000lb trailer.

    Kit was shipped quickly, but I certainly hope so for a $150 shipping cost to the customer. Kit had nearly everything needed to replace the entire brake assembly but for the 5 bolts. The Kit includes the new nuts to thread on but I had to reuse the old bolts to fasten to the axle. I had to double check the boxes because I figured no way would they supply new nuts but not the bolts. Old bolts had chewed up threads but we chaised them and were able to reuse them. Overall the Kit was alright and did the job to breath new life into our old trailer. The additional fee claimed to be from tariffs seems to be companies ways to pad their bottom line because I don't think it was shipped to the country after they were instated but who's to know but them.

    Was this helpful?
    The Trailer Parts Outlet
    4 weeks ago

    Thank you for your feedback. This will help us improve our product offerings. On the tariff fee, we do churn our inventory pretty quickly, and our vendors are passing on the tariff fees to us, so unfortunately until they go away we will have to pass this on. We are hoping things will lighten up soon. Thank you for your business.

  • JS
    Jason S.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    Trailer repair

    Perfect fit and fast shipping

    Was this helpful?
  • KC
    kevin c.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    PARTS WERE ALL CORRECT

    GOT THE PARTS ON, EVERYTHING WORKING

    Was this helpful?
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