12K-16K Trailer Axle Hydraulic Drum Brake Assembly - 12.25"x5" - 12000-16000 lb Capacity - Left Hand (Driver Side)

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12K-16K Trailer Axle Hydraulic Drum Brake Assembly - 12.25"x5" - 12000-16000 lb Capacity - Left Hand (Driver Side)

12K-16K Trailer Axle Hydraulic Drum Brake Assembly - 12.25"x5" - 12000-16000 lb Capacity - Left Hand (Driver Side)

SKU : ASK-12HYD

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Regular price $874.99

Online price only

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4.6
Rated 4.6 out of 5 stars
171 Reviews
Shipping: Calculated at Checkout | Product Wt. 210.0 lb
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12.25"x5" Hydraulic Brake Assembly Package – 12000 lb-16000 lb Axles

Repair or Upgrade your trailer’s stopping power with this 12.25"x5" Hydraulic Brake Assembly Package. Designed for 12K–16K trailer axles, this repair kit fits popular brands like Dexter, TK, Lippert, and Texas Pride, making replacements simple and reliable.

Package Includes:

  • (1) 12.25" Left Hand Side Hydraulic Brake Assembly, Self -Adjusting
  • (1) 12.25" Right Hand Side Hydraulic Brake Assembly, Self -Adjusting
  • (1) 1 Quart Jug of Axle Oil (Oil Brand May Vary)
  • (2) 12K Trailer Axle Hub and Drum 8x6.5
  • (2) 21-36 Oil Bath Cap and Plug
  • (2) 3984 Inner Bearing 2.625" I.D
  • (2) 28682 Outer Bearing 2.250" I.D
  • (2) 10-56 Oil Seal 4.506" O.D 3.125" I.D
  • (2) 3920 Inner Race 4.438" O.D (Pre-Pressed In Hub)
  • (2) 28622 Outer Race 3.844" O.D (Pre-Pressed In Hub)
  • (2) 12-15K Tang Washer - 1.75 I.D" x 0.60"
  • (16) Coned Wheel Nuts

Brake Assembly Specs:

  • Brake Type: Hydraulic
  • Brake Size: 12.25" x 5"
  • Mounting Flange: 7-Bolt
  • Axle Rating: 12,000 lb – 16,000 lb
  • Adjustment: Self-Adjust
  • Compatibility: Dexter, TK, Lippert, Texas Pride
  • Warranty: 1 Year
  • Not Compatible with Rockwell American Axles

Features:

  • Easy Installation – Mounts with a 7-bolt brake flange and connects with just two wires (sold separately).
  • Simple Maintenance – Rear adjustment ports allow fast and precise brake adjustments.
  • Durable Construction – Built to handle heavy loads and demanding road conditions.
  • Trusted Quality – Backed by a 1-year warranty from The Trailer Parts Outlet.
  • Dexter Compatible Part: K23-408-00 & K23-409-00

Ready to Ship-Package Specs: (2) 14"x14"x7" Box @ 22 lbs each, (2) 14"x14"x7" Box @ 46 lbs each, (1) 13"x13"x6" @ 10 lbs. *Quantity 2 or more will ship on a 32"x32"x19" Wood Pallet with Freight Carrier chosen @ checkout.

Burnishing Instructions: To achieve optimal braking performance, burnish new brakes by performing 20–30 gradual stops from approximately 40 mph to 20 mph, allowing brakes to cool between each application.

Why Buy From The Trailer Parts Outlet?
We make trailer repairs simple. Whether you’re upgrading your fleet or replacing worn-out components, our premium hydraulic brake assemblies are engineered for strength, reliability, and safety. Order online today and get your trailer back on the road with confidence!

4.6
Rated 4.6 out of 5 stars
Based on 171 reviews
Customers Talked About
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171 reviews
  • DE
    Dallas E.
    Verified Buyer
    20 hours ago
    Rated 5 out of 5 stars
    7k electric trailer brakes

    Just wanted to let everybody know that the trailer that I have had surge brakes on it I really don’t care for surge breaks so I started looking around and found the electric brakes and I have to say these were an exact fit 12“ x 2“ had no problem at all bolted right in same bolt pattern the drum that I had was still in perfect condition just a slight bit of rust to it that cleaned right up slapped it all in adjusted the brakes these brakes work absolutely amazing thank you very much for a great product and we definitely do business again

  • RD
    Randall D.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Great for the do it yourselfer

    Replaced all four on my EZ Loader boat trailer in one day. Easy to do with no hassle messing with brake parts. Got rid of all of the rusting parts and made the trailer like new fo hauling my boat around.

  • AC
    Annamae C.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Great product, good value

    I needed 6 sets all of the assemblies for my ancient treble axle equipment trailer; only one assembly had been completely replaced since the trailer was new in 1971!

    I had concerns about the new assemblies fitting such an old trailer but the fit was perfect. My son was able to replace the old ones with no hassle and easily balance the brakes.

    Since replacing the brake assemblies we brought an antique International crawler out of the hills, over sundry gravel roads and on the Interstate . I drove my 32 yr old truck with this trailer, feeling safe & secure By the way, I'm an octogenarian woman. Good value, good price, great product.

  • SS
    Steve S.
    Verified Buyer
    3 weeks ago
    Rated 4 out of 5 stars
    Elec brakes

    Could be packaged better by adding cardboard between the brakes

  • DM
    Dennis M.
    Verified Buyer
    4 weeks ago
    Rated 5 out of 5 stars
    Great Buy

    Everything fit perfectly just waiting for my next camping trip!