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  6. 12-1/4 x 3-1/2 Inch Drum
Hayes/AL-KO Hydraulic Brake Assembly - Duo Servo - 12-1/4" - Left Hand/Right Hand - 9K to 12K

Hayes/AL-KO Hydraulic Brake Assembly - Duo Servo - 12-1/4" - Left Hand/Right Hand - 9K to 12K

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12-1/4" x 3-1/2" Hydraulic trailer brake assembly features a dual-plunger design. Mounting flange has 5-bolt pattern. Fit 16" or larger wheels. 1-800-940-8924 to order Dexter accessories and parts part number K23-524-00 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Hayes/AL-KO Hydraulic Brake Assembly - Duo Servo - 12-1/4" - Left Hand/Right Hand - 9K to 12K. Accessories and Parts reviews from real customers.
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  • Reviews (2)
  • Q & A (0)
  • Videos (1)
  • Photos

Dexter Accessories and Parts

  • Trailer Brakes
  • Hydraulic Drum Brakes
  • Brake Assembly
  • Dexter
  • 12-1/4 x 3-1/2 Inch Drum
  • RH
  • LH
  • 9000 - 12000 lbs

12-1/4" x 3-1/2" Hydraulic trailer brake assembly features a dual-plunger design. Mounting flange has 5-bolt pattern. Fit 16" or larger wheels.


Features:

  • Hydraulic drum brake assembly is designed for use with a surge-type trailer brake actuator
  • Dual-plunger design delivers same amount of braking when driving either forward or in reverse
  • Mounting bolts and hardware included
  • Made in the USA


Specs:

  • Application: most standard hub-and-drum assemblies including Dexter, Lippert (LCI), and AL-KO/Hayes
  • Configuration: left hand (driver's side) or right hand (passenger's side)
  • Dimensions: 12-1/4" diameter x 3-1/2" wide
  • Mounting flange bolt pattern: 5 bolt
  • Wheel size: 16" or larger
  • Axle rating: 9,000 lbs to 12,000 lbs


K23-524-00 Hayes / ALKO 12-1/4" x 3-1/2" Hydraulic Brake Assembly - Left Hand / Right Hand - 9K to 12K

Item # K23-524-00





Video of Hayes/AL-KO Hydraulic Brake Assembly - Duo Servo - 12-1/4" - Left Hand/Right Hand - 9K to 12K

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Dexter Axle Trailer Brakes K23-524-00 Review

Speaker 1: Today we're going to take a look at the Hayes/AL-KO 12-1/4" by 3-1/2" hydraulic drum brake assembly for 9,000 to 12,000 pound axles. Now, this hydraulic drum brake assembly is designed for use with the surge-type trailer brake actuators. This one is dual-plunger design so it delivers the same amount of braking when driving either forward or in reverse. The mounting nuts, you can see, are included to install this to your axle. This part is made in the USA. Again, the application for this, it fits 9,000 pound to 12,000 pound AL-KO Hayes axles with hydraulic brakes.This assembly can be used as either a left hand or a right hand side assembly.

The dimensions, the 12-1/4" is the diameter, which is measured from this side to this side. If we put a ruler on that, measures 12-1/4" diameter. The width of 3-1/2 inches is the width of the pad on the brake shoe, measures 3-1/2" wide. You'll notice on the back here, it's got the five studs. It is a five bolt brake mounting flange bolt pattern.

Again, it comes with the nuts to attach this to your axle. The wheel size this will accept is anywhere from 15" or larger. That should do it for the review on the Hayes/AL-KO 12-1/4" by 3-1/2" hydraulic drum brake assembly for 9,000 to 12,000 pound axles.

Customer Satisfaction Score:


Customer Reviews

Hayes/AL-KO Hydraulic Brake Assembly - Duo Servo - 12-1/4" - Left Hand/Right Hand - 9K to 12K - K23-524-00

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

12-1/4" x 3-1/2" Hydraulic trailer brake assembly features a dual-plunger design. Mounting flange has 5-bolt pattern. Fit 16" or larger wheels.

by:

This was a direct replacement part. Looked like OEM equipment. Very strait forward replacement. Etrailer staff was very helpful and was quick at getting the order out to me. Brakes work great! Only issue was one set only had 3 of the 5 nuts in the kit.



by:

Was able to make them work for my older hayes axles, but had to have spacers machined. But that's on me, not on etrailer. Will probably work fine on newer Alko/KH axles


2
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See what our Experts say about this Dexter Accessories and Parts

  • Can Hayes/AL-KO Hydraulic Brake Assembly 12-1/4" Brake Cylinder Be Replaced
    The brake cylinders that come with the Hayes/AL-KO Hydraulic Brake Assembly # K23-524-00 aren't available separately but we do have the Dexter Rebuild Kit for Duo-Servo Wheel Cylinder # K71-081-00 that can be used instead to help rebuild your cylinders.
    view full answer...
  • Replacement Brakes for an AL-KO Axle. Can I Use Heavier Brakes?
    Thanks for the picture! Those brakes do look identical. The Hayes/AL-KO Hydraulic Brake Assembly - Duo Servo - 12-1/4" - Left Hand/Right Hand - 9K to 12K item # K23-524-00 will work on 8,000 lbs AL-KO axles if they are 12-1/4" diameter x 3-1/2" wide. You will want to measure your current brakes to confirm if these will fit. There will be no issue running 9k-12k brakes on your 8K axles.
    view full answer...
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  • Correct Replacement Braking Assemblies for an Older Hayes AL-KO 12K Axle
    I am assuming you're looking for a replacement braking assembly for your older Hayes AL-KO axle. If so, you're going to just need the Hayes/AL-KO Hydraulic Brake Kit - Duo Servo - 12-1/4" # K23-524-00-2 or just # K23-524-00 for one assembly. You mention that you have a 6-bolt mounting flange, and while it's true the older Hayes axles had 6-bolt flanges it only actually used 5 to mount. If you're also needing replacement inner/outer bearings as well as an oil seal, you can use # 28580...
    view full answer...
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  • Correct Braking Assemblies for Haynes Axle with 6 Bolts
    The larger Haynes Axles did in fact have a 6 bolt brake mounting flange but the braking assemblies actually only uses five bolts to attach. Therefore, the Hayes/AL-KO Hydraulic Brake Assembly part # K23-524-00 is very what you need. That said, you would need to order a quantity of two in order to cover both sides of the axle as the above part is one for one assembly. If you want to buy both you can simply order two of the above or go with the Hayes/AL-KO Hydraulic Brake Kit part # K23-524-00-2. I...
    view full answer...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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