AL-KO Spring Cylinder – Handbrake Brake Spring for Caravan Couplings

AL-KO Spring Cylinder – Handbrake Brake Spring for Caravan Couplings

The AL-KO Spring Cylinder is a genuine replacement spring component used in AL-KO caravan couplings with handbrake and overrun brake systems, such as 90S, 161S and some delta overrun assemblies. It provides the necessary tension and stored spring energy that assists the handbrake mechanism and can help override the automatic reverse braking in certain setups.

This simple yet essential part is often located on the brake rod or under the coupling head, working to keep brake linkage tensioned and ensuring smooth operation of the caravan’s handbrake or overrun brake function. When worn or weakened, replacing the spring cylinder restores dependable brake action and helps maintain safe caravan braking performance.

📦 What’s Included

• 1 × AL-KO Spring Cylinder — genuine replacement spring for handbrake or overrun brake assemblies.

⚠️ Note: Length and specific fitment (e.g., 145 mm vs 170 mm) vary by coupling type — always check your existing part before ordering.

🔑 Key Features & Benefits

• 🔩 Genuine AL-KO Replacement: Designed specifically for AL-KO brake/handbrake systems on caravan couplings (e.g., 90S/3, 161S delta).

• ⚙️ Restores Brake Tension: Provides controlled spring tension behind the brake linkage for smoother handbrake operation and reliable overrun brake response.

• 🛠 Compact & Simple Fit: Easy to install into the existing brake linkage or coupling assembly — ideal for servicing older AL-KO couplings.

• 📐 Various Sizes Available: Typically available in multiple length options (e.g., ~145 mm / ~170 mm) to match specific AL-KO coupling fits.

🛠️ Why You Need This

Over time, the spring inside the cylinder on your handbrake or overrun brake assembly can weaken or corrode, reducing brake tension and affecting how the caravan’s brake engages. Replacing a worn spring cylinder restores the correct tension and mechanical performance, helping your overrun and handbrake systems operate safely and predictably — especially important for towing safety on hills and at stopping points.