Product Description

The AL-KO 10" Brake Drum (P/N 428308) is a genuine AL-KO replacement brake drum designed for 1450kg trailer axles fitted with 10" × 2¼" electric or hydraulic drum brakes and the popular Holden HQ 5 stud wheel pattern (5 × 120.65mm PCD).

Manufactured from high-strength ductile iron, this genuine AL-KO brake drum delivers reliable braking performance, excellent durability and precision fitment for Australian trailers.

The drum is supplied with five 7/16" UNF wheel studs pre-installed and is one of the most versatile drums in the AL-KO range, being compatible with LM (Holden), Ford Slimline and Composite bearing combinations.

Please note: This listing is for the brake drum only. Bearings, bearing cups (races), grease seal, grease cap and wheel nuts are sold separately.

Features & Benefits

• Genuine AL-KO product
• Part Number 428308
• Designed for 1450kg trailer axles
• 10" × 2¼" Brake Drum
• Suits both electric and hydraulic brake systems
• Holden HQ 5 × 120.65mm wheel pattern
• Five 7/16" UNF wheel studs pre-installed
• High-strength ductile iron construction
• Precision machined braking surface
• Compatible with multiple bearing combinations
• Genuine AL-KO quality and reliability

Specifications

Stud Pattern Explained

This brake drum uses the 5 × 120.65mm (5 × 4.75") Holden HQ wheel pattern, one of Australia's most common trailer wheel patterns.

Before ordering, always confirm:

• Wheel stud pattern
• Wheel stud size
• Brake size
• Bearing combination
• Axle capacity

Matching these specifications is the best way to ensure correct fitment.

Bearing Compatibility

One of the biggest advantages of this brake drum is its compatibility with multiple bearing combinations.

This drum can be used with:

This flexibility makes it suitable for a wide range of trailer axle configurations.

Bearing cups (races) are not included.

For the best reliability, we recommend replacing the wheel bearings, bearing cups, grease seal and grease cap whenever installing a new brake drum.

Brake Compatibility

This brake drum is compatible with:

• AL-KO 10" Electric Brake Backing Plates
• AL-KO 10" Hydraulic Brake Backing Plates

Suitable for both electric and hydraulic drum brake systems.

Suitable Applications

Ideal for:

• Boat trailers
• Box trailers
• Camper trailers
• Car trailers
• Utility trailers
• General-purpose trailers fitted with 1450kg AL-KO axles
• Trailers using the Holden HQ 5 × 120.65mm wheel pattern

Why Choose Genuine AL-KO?

Genuine AL-KO brake drums are manufactured to precise engineering tolerances to ensure dependable braking performance, correct fitment and long service life.

Benefits include:

• Genuine AL-KO quality
• High-strength ductile iron construction
• Precision-machined braking surface
• Suitable for electric and hydraulic brake systems
• Designed for Australian towing conditions

What's Included

• 1 × Genuine AL-KO 10" Brake Drum
• 5 × 7/16" UNF Wheel Studs (Pre-installed)

What's Not Included

• Wheel Bearings
• Bearing Cups (Races)
• Grease Seal (429015)
• Grease Cap (491020)
• Wheel Nuts
• Electric or Hydraulic Backing Plate

Will This Fit My Trailer?

Before ordering, confirm the following:

✔ AL-KO 1450kg axle

✔ 10" × 2¼" drum brake system

✔ 5 × 120.65mm Holden HQ wheel pattern

✔ 7/16" UNF wheel studs

✔ Compatible bearing combination (LM, Ford Slimline or Composite)

If these specifications match your existing brake drum, this product is suitable for your trailer.

Complete Your Installation

Bearings & Seals

• LM Bearing Kit
• AL-KO Ford Slimline Bearing Kit
  
• Composite Bearing Kit
• Grease Seal 429015
• Grease Cap 491020
  

Brake Components

• AL-KO 10" Electric Brake Backing Plates
• AL-KO 10" Offroad Brake Backing Plates
• AL-KO 10" Brake Shoe Set
  

Workshop Items

• Marine Wheel Bearing Grease
  
• Split Pin
• Castle Nut
  
• 7/16" UNF Wheel Nuts

Common Replacement Parts

• LM Bearing Kit
• Ford Slimline Bearing Kit
• Composite Bearing Kit
• Bearing Cups (Races)
• Grease Seal 429015
• Grease Cap 491020
• Wheel Studs
• Brake Shoes

Installation Tips

• Confirm which bearing combination your trailer uses before ordering replacement bearings.
• Always install new bearing cups when replacing bearings.
• Replace the grease seal whenever the drum is removed.
• Pack bearings with quality high-temperature or marine wheel bearing grease.
• Inspect the spindle for wear before installation.
• Adjust the brakes after installation according to the manufacturer's specifications.
• Torque wheel nuts to the manufacturer's recommended specification.

Frequently Asked Questions

Does this suit electric brakes?

Yes. It suits AL-KO 10" electric brake systems.

Does this also suit hydraulic brakes?

Yes. It is compatible with AL-KO 10" hydraulic brake systems.

What bearing combinations does this drum support?

This brake drum is compatible with:

• LM (Holden) Bearings
• Ford Slimline Bearings
• Composite Bearings (Holden Inner / Ford Outer)

Are the bearing cups included?

No. Bearing cups (races) are sold separately.

What grease seal does it use?

AL-KO Grease Seal 429015

What grease cap does it require?

AL-KO Grease Cap 491020

Does it include wheel studs?

Yes. Five 7/16" UNF wheel studs are supplied pre-installed.

What wheel pattern does it use?

This drum uses the Holden HQ 5 × 120.65mm wheel pattern, one of the most common trailer wheel patterns in Australia.

Why Buy From Trailer Spares Online?

• Genuine AL-KO products
• Australia's trailer parts specialists
• Expert technical advice
• Fast Australia-wide shipping
• Large range of matching bearings and brake components
• Competitive pricing and local support