15/04/2008
Ensuring the safety and longevity of your trailer or caravan hinges significantly on the quality and condition of its components. When it comes to axles, brakes, and couplings, AL-KO Kober stands as a titan in the industry, renowned for its robust and reliable parts. Understanding the vast array of AL-KO spares available and knowing how to identify the correct ones for your specific model is paramount for effective maintenance and, crucially, for road safety. This comprehensive guide will navigate you through the world of AL-KO parts, from essential coupling elements to critical brake components, helping you keep your towed vehicle in prime condition.

AL-KO offers a meticulously organised range of spares, primarily categorised by drum type to streamline the process of finding the exact part you need. This thoughtful classification simplifies what could otherwise be a daunting task, given the sheer volume of models and variations. Whether you're dealing with a compact utility trailer or a large touring caravan, the correct identification of your drum type is often the first step in sourcing the right AL-KO spare.
AL-KO Coupling & Brake Spares: Essential for Roadworthiness
The coupling and braking systems are arguably the most critical safety components of any trailer or caravan. AL-KO has a long-standing reputation for manufacturing high-quality, durable parts for these systems. At Western Towing, we maintain an extensive inventory of AL-KO coupling and brake spares, along with various accessories, recognising their vital role in routine maintenance and emergency repairs. Should you find yourself unable to identify a specific part or if an item isn't immediately visible in our listings, expert assistance is just a phone call away, ensuring you always get the right component.
Understanding AL-KO Coupling Spares
The coupling is the fundamental link between your towing vehicle and the trailer or caravan. Due to the vast number of AL-KO coupling models produced over the years, precise identification of your existing unit is crucial for ordering spares. This typically involves consulting the information plate, usually found on the coupling itself. This plate contains vital data that allows us to pinpoint the exact model and, subsequently, the compatible spare parts.

An AL-KO Delta Over Run Coupling, for instance, comprises numerous individual parts, each playing a specific role in its operation. Here’s a breakdown of common components you might need to replace:
| Component No. | Part Description | Function/Importance |
|---|---|---|
| 1 | Coupling Head | The primary connection point to the towball; critical for secure attachment. |
| 2 | Damper | Absorbs shock and smooths the braking action, preventing jarring. |
| 3, 6, 13 | Hexagon Nut | Secures various components; essential for structural integrity. |
| 4 | Gaitor | Protects the overrun shaft and damper from dirt and moisture. |
| 5 | Bump Rubber | Provides cushioning and absorbs impact within the coupling mechanism. |
| 7 | Front Bearing Bush (not reamed) | Supports the overrun shaft at the front of the housing. |
| 8 | Spacer | Ensures correct spacing between components for proper operation. |
| 9, 21 | Hexagon Bolt | Fastens various parts together, providing structural strength. |
| 10 | Housing complete with bearings | The main body of the coupling, containing critical moving parts. |
| 11 | Overrun Shaft | Transmits braking force from the coupling to the brake rod. |
| 12 | Rear Bearing Bush (not reamed) | Supports the overrun shaft at the rear of the housing. |
| 14, 16 | Grease Nipple | Allows for lubrication of moving parts, crucial for smooth operation and longevity. |
| 15 | Over Run Lever | Part of the mechanism that engages the brakes during overrun. |
| 17, 23 | Washer | Distributes load and prevents loosening of bolts/nuts. |
| 18 | Handbrake Pivot Bolt | Allows the handbrake assembly to pivot. |
| 19 | Handbrake Assembly | Engages the brakes when the trailer is stationary; a vital safety feature. |
| 20 | Breakaway Cable | A critical safety device that applies the trailer brakes if it detaches from the towing vehicle. |
| 22 | Reinforcement Plate | Adds strength to areas under stress. |
| 24 | Jockey Wheel Clamp | Secures the jockey wheel in place. |
AL-KO Brake Spares: Ensuring Stopping Power
Just like couplings, AL-KO brake assemblies require specific information from their identification plate to ensure correct part selection. This is vital for maintaining optimal braking performance and, by extension, safety. The components of an AL-KO brake assembly work in concert to provide reliable stopping power, and replacing worn parts with genuine or high-quality compatible alternatives is non-negotiable.
AL-KO Brake Shoes: Genuine vs. Compatible
AL-KO Kober is a dominant force in the trailer brake market, especially for caravans. Our extensive experience working with AL-KO systems has equipped us with a wealth of knowledge and resources to support your braking needs. We stock both genuine AL-KO parts and high-quality original equipment (OE) compatible brake shoes.
The most common AL-KO brake shoe sizes you'll encounter include:
- 1637
- 2050
- 2051
- 2361
Identifying the correct brake shoe size is straightforward. You can either measure the diameter of your brake drum and the width of the brake shoe rubbing surface, or, more conveniently, look for the part numbers that AL-KO often stamps directly onto their brake shoes. This stamping provides an unequivocal identification for hassle-free replacement.

For many years, the industry was cautious about recommending copy or compatible brake components due to varying quality. However, advancements in manufacturing have led to suppliers producing parts that are truly comparable to AL-KO's own high standards. We have diligently sourced such suppliers, ensuring that our compatible brake shoes meet rigorous quality criteria, offering a reliable and often more economical alternative without compromising safety or performance.
The AL-KO Brake Back Plate: A Closer Look at Adjustment
The AL-KO brake back plate is a crucial component that houses and supports the brake shoes and adjustment mechanism. A distinctive feature of AL-KO brake back plates is the presence of two green bungs. These bungs cover access points for inspection and adjustment, making routine maintenance more accessible.
- The outer bung, located on the lower edge of the back plate, is the inspection port. While it offers a limited view, typically about half an inch of one edge of the lower brake pad, it allows for a quick visual check of the brake lining wear without extensive disassembly.
- The inner bung, positioned closer to the axle, conceals the star wheel adjuster. This star wheel is the primary mechanism for fine-tuning your AL-KO brakes, compensating for lining wear and ensuring optimal braking efficiency.
Both bungs can be gently eased out using a small, flat-bladed screwdriver and then pushed back into place with a thumb. When it comes to adjusting the star wheel, precision is key for safety and performance:
- Access the star wheel adjuster by removing the inner green bung.
- Using a suitable tool, adjust the star wheel until the brake drum will no longer rotate. This indicates that the brake shoes are fully engaged with the drum.
- Once the drum is locked, back off the star wheel adjuster by precisely three clicks. This slight retraction ensures the shoes are not dragging, preventing overheating and premature wear, while still providing effective braking.
- Crucially, when adjusting, always turn the wheel/drum in the FORWARD direction ONLY.
- Under no circumstances should you turn the wheel/drum in the reverse direction during adjustment. Doing so can misalign the brake shoes and compromise braking performance.
Why Choosing the Right AL-KO Parts Matters
The integrity of your trailer or caravan's running gear directly impacts your safety and the safety of other road users. Using genuine AL-KO parts or approved OE compatible alternatives ensures that your vehicle adheres to its original design specifications, maintaining performance, reliability, and most importantly, safety. Ill-fitting or sub-standard components can lead to premature wear, reduced braking efficiency, and even catastrophic failure.

Frequently Asked Questions About AL-KO Spares
How do I find the correct AL-KO coupling spare part?
The most reliable way to find the correct AL-KO coupling spare part is to locate the identification plate on your existing coupling. This plate contains vital model information that allows for precise part identification. Without this information, it can be challenging to ensure compatibility due to the vast number of AL-KO coupling models. If you're struggling to find it, contacting a specialist with your coupling's details is recommended.
What's the difference between genuine and compatible AL-KO brake shoes?
Genuine AL-KO brake shoes are manufactured by AL-KO themselves, ensuring they meet the exact specifications and quality standards of the original equipment. Compatible (or OE compatible) brake shoes are manufactured by third-party suppliers to match the performance, fit, and quality of the original AL-KO parts. While genuine parts offer absolute assurance, high-quality compatible parts, like those we stock, provide a reliable and often more cost-effective alternative without compromising safety or performance.
How often should I inspect my AL-KO brakes?
It is generally recommended to inspect your AL-KO brakes at least once a year or every 10,000 kilometres (whichever comes first). However, if you frequently tow heavy loads, travel long distances, or encounter challenging terrain, more frequent inspections are advisable. Regular checks for wear, correct adjustment, and any signs of damage are crucial for maintaining optimal braking performance and safety.

Can I adjust my AL-KO brakes myself?
Yes, you can adjust your AL-KO brakes yourself, provided you follow the correct procedure outlined in this guide and your vehicle's service manual. The star wheel adjuster on the brake back plate allows for fine-tuning. However, if you are unsure or uncomfortable with the process, it is always best to consult a qualified mechanic or trailer specialist to ensure the adjustment is performed correctly and safely.
What are the common AL-KO brake shoe sizes?
The most common AL-KO brake shoe sizes you will encounter are 1637, 2050, 2051, and 2361. These numbers typically refer to the diameter of the brake drum and the width of the brake shoe. You can usually find the size stamped directly on the brake shoes themselves or by measuring your existing brake drum and shoe.
Conclusion
Maintaining your AL-KO equipped trailer or caravan doesn't have to be a daunting task. With a clear understanding of the parts available, how to identify them, and the correct procedures for essential adjustments, you can ensure your towed vehicle remains safe, reliable, and ready for any journey. Whether you're replacing a worn coupling component or fine-tuning your brakes, investing in the right AL-KO spares is an investment in your peace of mind on the road.
If you want to read more articles similar to AL-KO Trailer & Caravan Spares: Your Complete Guide, you can visit the Maintenance category.
