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AL-KO Lockable Coupling 50mm 3500Kg 4 Hole with Ratchet Park Brake Lever


Available on back-order

Coupling Bolt Kit 2" x 1/2" 4pk

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Alko lockable coupling 50mm 3500Kg 4 hole with ratchet park brake lever and brake cable adjuster.

Caravan and Trailers are a desirable yet costly investment. Protection has not only become a way of the times, it is a part of your insurance requirements. Alko have incorporated locking technology into the body of the coupling, ensuring you never forget or lose a vital part of your protection leaving you vulnerable.

The Trailer Shop is proud to introduce Alko’s innovative new range of premium lockable couplings – designed to ensure your valuable investment is secure, and eliminating the need for a separate coupling lock. The addition of the new Alko XL Grip also enhances comfort and ease of use.

  • Lock is integrated into the coupling body
  • XL Grip for optimal ergonomics + ease of use compared to classic design
  • AL-KO standard mounting options for a straight switch over.
  • Each coupling comes with 2 keys.

This style of coupling is usually used where either there are no brakes fitted to the trailer or the braking system does not require activation through a sliding or over run coupling.

Alko couplings are simple to attach to the tow ball and provide safe and secure attachment of the trailer onto the tow vehicle.

Capacity: 3500Kg
Mounting Pattern (hole centres): 4 bolt 184mm x 54mm
Bolt Hole Size: 13.5mm
Coupling bolt: 1/2″ UNC grade 8

Additional information

Weight 6.5 kg
Dimensions 60 × 30 × 17 cm



  • Ball Size: 50mm
  • Park brake lever fitted: Yes
  • Finish: Zinc Plated
  • Number of Mounting Holes: 3
  • Mounting Hole Dia.: 13.5mm
  • Mounting Hole Spacing: 182.5mm (centerline of front holes to centreline of rear hole) – 55mm (hole center to hole centre side to side)
  • Rating: 3500kg


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