Product Description
The AL-KO 10" Electric Brake Backing Plate is a genuine AL-KO complete brake assembly designed for 1600kg trailer axles fitted with 10" × 2¼" electric drum brakes.
Available in both Left-Hand (P/N 331101H) and Right-Hand (P/N 331100H) configurations, each backing plate is supplied fully assembled with brake shoes, adjuster, springs and a genuine AL-KO electric brake magnet, making installation quick and straightforward.
This backing plate uses the standard AL-KO oval electric brake magnet (P/N 339010) and is designed to suit AL-KO 10" hub drums fitted with either parallel bearings or Ford Slimline bearings.
Please note: Backing plates are sold individually. For a complete axle, you will require one left-hand and one right-hand backing plate.
Features & Benefits
- Genuine AL-KO product
- Available in Left-Hand (331101H) or Right-Hand (331100H)
- Complete ready-to-install brake assembly
- Designed for 1600kg trailer axles
- 10" × 2¼" electric brake assembly
- Genuine AL-KO 339010 oval brake magnet
- Pre-adjusted brake shoes
- Pre-installed brake adjuster
- Complete return spring and hold-down hardware fitted
- Pre-wired magnet leads
- Suits AL-KO hub drums with parallel or Ford Slimline bearings
- Designed for Australian trailer applications
Specifications
| Specification | Details |
|---|---|
| Brand | AL-KO |
| Part Numbers | LH 331101H / RH 331100H |
| Brake Size | 10" × 2¼" (254 × 57mm) |
| Brake Type | Electric Drum Brake |
| Axle Capacity | 1600kg |
| Mounting Pattern | 4 Bolt |
| Mounting Stud Pattern (PCD) | 73mm (2.875") |
| Mounting Hardware | Not Included |
| Brake Magnet | Genuine AL-KO 339010 Standard Oval Magnet |
| Backing Plate Sold As | Individual LH or RH Assembly |
Complete Ready-to-Bolt-On Assembly
Each backing plate is supplied fully assembled with:
- Genuine AL-KO Brake Shoes
- Genuine AL-KO 339010 Electric Brake Magnet
- Brake Adjuster
- Return Springs
- Hold-Down Springs & Pins
- Actuating Arm
- Park Brake Lever
- Pre-Wired Magnet Leads
Simply bolt the backing plate to the axle flange, connect the magnet wiring and adjust the brakes during installation.
Brake Compatibility
This backing plate is designed to suit:
- AL-KO 10" Hub Drums
- AL-KO Parallel Bearing Hub Drums
- AL-KO Ford Slimline Hub Drums
Not compatible with Dexter 10" brake drums.
Suitable Applications
Ideal for:
- Boat trailers
- Box trailers
- Camper trailers
- Car trailers
- Utility trailers
- General-purpose trailers fitted with 1600kg AL-KO axles
Left-Hand vs Right-Hand
This product is available in two versions:
Left-Hand (LH)
Part Number: 331101H
Right-Hand (RH)
Part Number: 331100H
Backing plates are sold individually.
For a complete axle, purchase:
- 1 × Left-Hand Backing Plate
- 1 × Right-Hand Backing Plate
For the best braking performance, we recommend replacing both backing plates at the same time when servicing your trailer.
What's Included
Each backing plate includes:
- Brake Shoes
- Genuine AL-KO 339010 Electric Brake Magnet
- Brake Adjuster
- Return Springs
- Hold-Down Springs & Pins
- Actuating Arm
- Park Brake Lever
- Pre-Wired Magnet Leads
- Mounting Studs
What's Not Included
- Mounting Nuts
- Brake Drum
- Brake Cable
Will This Fit My Trailer?
Before ordering, confirm the following:
✔ AL-KO 1600kg axle
✔ 10" × 2¼" electric brakes
✔ 4 Bolt Mounting Pattern
✔ 73mm Mounting PCD
✔ AL-KO Hub Drum
✔ Standard AL-KO Electric Brake Magnet
If these specifications match your existing backing plate, this assembly is suitable for your trailer.
Complete Your Brake Service
We recommend replacing or inspecting the following components at the same time:
Brake Components
Electrical Components
Installation Tips
- Replace both backing plates together where possible for balanced braking performance.
- Inspect the brake drum for wear before installation.
- Check the brake magnet running surface.
- Adjust the brake shoes after installation.
- Re-adjust the brakes after the initial bedding-in period.
- Test the electric brake controller before towing.
Frequently Asked Questions
Is this sold individually?
Yes. Each backing plate is sold individually.
Do I need one or two?
A single-axle trailer requires:
- 1 × Left-Hand
- 1 × Right-Hand
Does it include the brake shoes?
Yes. Brake shoes are already fitted.
Does it include the brake magnet?
Yes. It includes the genuine AL-KO 339010 standard oval electric brake magnet.
Does it include the adjuster and springs?
Yes. The backing plate is supplied fully assembled.
Does it include mounting hardware?
No. Mounting studs and mounting nuts are not included.
Does it suit Dexter hub drums?
No. This backing plate is designed specifically for AL-KO 10" hub drums.
Does it suit both Parallel and Ford Slimline hubs?
Yes.
Why Buy From Trailer Spares Online?
- Genuine AL-KO products
- Australia's trailer braking specialists
- Expert technical advice
- Fast Australia-wide shipping
- Large range of AL-KO brake components
- Competitive pricing and local support
Shipping is calculated at checkout based on your location.
- Sold individually — choose left or right side
- Suits 10" electric brake hubs
- Mounting pattern: 4 bolt, 2.875" (73 mm) center spacing
- Rated to 1600 kg per axle
- Includes backing plate, brake shoes, springs, and magnet
- Pre-wired for standard 12V electric trailer brake systems
- Compatible with AL‑KO and most standard trailer axles
- We recommend replacing both left and right sides at the same time for balanced braking