AL-KO VT coupling heads & stabiliser couplings for trailers

    Securely connected and matched to your trailer

    A coupling head connects the trailer’s drawbar to the towball of the towing vehicle. The mechanism encloses the towball and transfers towing forces and nose load between the trailer and towing vehicle. Stabiliser couplings also feature friction pads that damp swaying and pitching movements, improving the driving stability of the vehicle and trailer combination.

    AL-KO VT offers coupling heads and stabiliser couplings for unbraked and braked car trailers, transport trailers and commercial trailers. Key selection criteria include the permissible gross weight, nose load, drawbar connection and towball diameter.

    Coupling heads for light and medium-duty trailers

    The AK 7 is suitable for unbraked trailers with a permissible gross weight of up to 750 kg. For braked trailers, options include the AK 161 for up to 1,600 kg and the AK 270 for up to 2,700 kg.

    The steel coupling heads WW 8, WW 150 and WW 220 are suitable for trailers up to 2,200 kg, depending on the model. Various versions allow installation on different drawbar connections. Integrated indicators make it easy to check for wear and correct locking.

    Coupling head AK 7

    For unbraked trailers up to 750 kg

    AK 161 coupling head

    For braked trailers up to 2,700 kg

    AK 270 coupling head

    For braked trailers up to 2,700 kg

    Steel Ball Coupling Model WW 8

    Steel Ball Coupling Model WW 150

    Ball Coupling Steel Model WW 220

    Coupling heads for higher loads

    The AK 301 and AK 351 are designed for braked trailers up to 3,000 kg and 3,500 kg respectively.

    For other applications, robust cast iron coupling heads such as the WW 13, WW 20, WW 200, WW 30, WW 300 and WW 350 are available. Depending on the version, they are suitable for trailers up to 3,500 kg and a range of private and commercial applications.

    AK 301 coupling head

    For braked trailers up to 3,500 kg

    Coupling head AK 351

    For braked trailers up to 3,500 kg

    Cast Ball Coupling Model WW 20

    Cast Ball Coupling Model WW 200

    Cast Ball Coupling Model WW 30

    Cast Ball Coupling Model WW 300

    Cast Ball Coupling Model WW350

    Cast Ball Couplings Model WW 13

    Stabiliser couplings for greater driving stability

    The AKS 3004, AKS 3504, WS 3000 and WS 3500 stabiliser couplings damp unwanted swaying and pitching movements. Depending on the model, they are suitable for braked trailers up to 3,000 or 3,500 kg. They can be used as stabilisation devices to help meet the requirements for 100 km/h approval. Always observe current legal requirements and vehicle-specific regulations.

    Stabiliser coupling AKS™ 3004

    For driving stability and lane handling.

    WS 3000 Safety Coupling

    WS 3500 Safety Coupling

    Safety coupling for stable and comfortable towing with trailers up to 3,500 kg.

    Frequently asked questions about coupling heads

    A coupling head connects the trailer’s drawbar to the towball of the towing vehicle. Its mechanism encloses the towball and secures the connection while driving.

    Depending on the model, a nose load of 75 to 350 kg is permitted. The permitted nose load is determined by the lowest approved value for the towing vehicle, towbar, coupling head and trailer. The exact values are shown on the type plate and in the vehicle documents.

    Before replacement, ensure that the permissible gross weight, nose load, drawbar tube diameter, hole pattern and approval of the new coupling head are suitable. Secure the trailer against rolling away, remove the old coupling head and install the new model in accordance with the installation instructions, using the specified fastening parts and tightening torques. Afterwards, check the locking mechanism, safety indicator and ease of movement.