12-inch Hydraulic Backing Brake Plate
A 12-inch hydraulic backing plate for trailers typically features a complete, pre-assembled brake system (including shoes and a wheel cylinder), is designed for simple bolt-on installation, and offers reliable, low-maintenance hydraulic drum braking.
This universal hydraulic backing plate replaces all backing plates except the older Westco versions.
You will need to cut and reinstall your weld ring if replacing older versions.
Install an adjuster on the bottom of the backing plate.
Hydraulic brake backing plates are sold on the Left and Right. The right side is the driver’s side.
Furthermore, replacing the entire assembly is more accessible than installing replacement hydraulic brake shoes or wheel cylinders.
Note 9″ and 10″ brake cylinders are not interchangeable.
12-inch Hydraulic Brake Specifications
- 12-inch x 2-inch Right-hand side or Left-hand side Hydraulic Brake Assembly
- 2000kg capacity per pair
- Single-wheel cylinder (Most Common Style)
- Used with 12″ Hub/Drums
- Mounting studs included
Tip: Look inside your wheel cylinder connection to see if there is an olive locator for your hydraulic hose. If not, you will require an adaptor nut.
Purchase Replacement Hydraulic Backing Plate spare parts below:
- Adaptor nut
- Master cylinder
- 2t Override Coupling
- 10-inch Hydraulic Brake
- 12-inch Hydraulic Brake – Right
Why Order with Couplemate
Our wide range of manufactured and supplied towing parts means you can get most of the other parts you require through us.
Express Dispatch
Shipping nationally and internationally with our couriers, with your preferred couriers (if you’re a Couplemate trade customer), or via click-and-collect; we have a range of freight options to suit your business needs.
At Couplemate, we aim to use the fastest, most dependable couriers to give you a seamless freight experience in most cases.
If there are any issues, our reliable customer service team will get you back on track.
Wholesale Pricing
Wholesale pricing and bulk buy deals are available. Fill out our wholesale application form to tell us about your needs.
Over 60 Years of Combined Experience
We have knowledgeable staff who can assist with a wide variety of queries and solutions.
There are no FAQs for this product.
Additional information
| Weight | 4 kg |
|---|---|
| Dimensions | 25 × 25 × 10 cm |
| Select Side | Passengers Side, Drivers Side |
Our Service Lifetime Warranty
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.
Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.
Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.
60-Day Returns
After 60 years of experience, we know that life has its unpredictable moments.
All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.
You can view our full policy for change-of-mind returns here.













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