Upgrade Your Vehicle with ALKO Genuine Hydraulic Conversion and 7/8 Inch Master Cylinder

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Alko over-ride coupling hyd brake con c/w 7/8″ cyl. Coupling hyd conversion with 7/8 in cyl


The 7/8” hydraulic conversion kit is designed to convert the energy transferred in to an override coupling through deceleration when you apply your brakes in to pressure in your hydraulic master cylinder resulting in a hydraulic brake activation.

The conversion body is fitted with a hand brake lever to facilitate the manual activation of the trailer brakes when the trailer is disconnected from the tow vehicle.

The 7/8” hydraulic brake master cylinder has a cast body. The master cylinder is fitted with rubber seals and a plastic fill cap to ensure optimum performance over the life of the product. The attached master cylinder is available as a spare part.

Should you loose or damage the plastic cap fitted to your master cylinder, this is also available as a spare.


  • 1 x 7/8” Hydraulic brake master cylinder
  • 1 x Hydraulic conversion body with hand brake lever

Additional information

Weight 2.4 kg
Dimensions 30 × 26 × 10 cm