Hydrastar logo


HYDRASTAR sold and distributed in Australia by:

Trailer Spares Direct

Fastest response time, Shortest stopping distance, Maximum braking safety

HYDRASTAR electric over hydraulic brake actuator is manufactured by Cargo Towing in the USA, an industry leader in the design and technology of brake actuators. This unit was the first mass produced trailer electric over hydraulic brake actuator and remains the leader in design and technology of brake actuators.

  • Fast response time for a shorter stopping distance
  • Engages trailer brakes when used with an in-cab electric brake controller installed in the tow vehicle
  • Compatible with a wide range of in-cab brake controllers and factory installed brake controllers in American Trucks Chevy/GMC, Dodge and Ford. See manufacturers list of compatible controllers. 
  • Eliminates brake drag common with mechanical override brakes on downhill grades
  • Works when reversing the trailer
  • 12v DC operation with low amp draw at maximum output
  • 3 models with varying pressure outputs to suit all trailers with GVM/ATM weights up to 4.5 tonne
  • Sealed, self-contained weather tight aluminium body
  • Easy to install to boat trailers, caravans, and all other types of trailers
  • For use with Dot 3 or Dot 4 brake fluid systems. We suggest LoadForce Brake Fluid Dot 4.
  • 2 year warranty from date of purchase
  • Dimensions 11.8inch long x 3inch wide x 7.3inch high

In Australia, Trailers and Caravans with a GVM over 2 tonne are required to have all wheels braked and be fitted with a breakaway system.

We have been distributing the HydraStar for over 15 years to wholesale, trade and retail customers.

Spare parts for repairs and servicing are also available.

Contact us at Trailer Spares Direct for more information.


Available at Trailer Spares Direct

Part no. 32-7640

Genuine HYDRASTAR replacement reservoir cap for all HBA Series HydraStar Brake Actuators. 

Hydrastar Cap
Part no. HBASK

We recommend that this kit is purchased when doing a repair or service on the HYDRASTAR.
Contains Gaskets, Pump Seal, small and large O-Rings.

Hydrastar Gasket and Seal kit
Part no. 496-200

Circuit board suits HBA series 1000psi, 1200psi and 1600psi models. 

Hydrastar circuit board
Part no. 496-183

Hydrastar genuine electric motor replacement for 1000psi, 1200psi and 1600psi HBA series models. 

Hydrastar Electric Pump

Buy online or in store - or contact us for more information

Trailer Spares Direct is located at Lawnton, Queensland.
We have been selling and distributing the HYDRASTAR for over 15 years through Resellers and direct to the retail public. We stock the three HYDRASTAR units and a range of genuine spare parts.

Or Call Us : 07 3205 8846