Hydrastar® MARINE Electric Over Hydraulic (EOH) Trailer-Mounted Brake Actuator with Expanded 1 Quart Reservoir

Industry leading Hydrastar® MARINE Electric Over Hydraulic (EOH) Trailer-Mounted Brake Actuator are easy to install and meet all Department of Transportation (D.O.T.) braking requirements. Hydrastar® has improved the stopping performance for trailers hauling boats, to provide maximum braking safety, in the industry’s fastest response time.


  • Largest in the industry, the 1 quart (32 oz.) total reservoir capacity is preferred for multi-axle trailers and applications equipped with long brake line runs that require higher volumes of brake fluid.
  • Translucent expanded reservoir tank allows fluid check at a quick glance.
  • Built to withstand aquatic environments and extreme temperatures with durable, sealed, fully enclosed extruded anodized aluminum housing case (not cast or plastic), premium stainless steel hardware, EPDM Gaskets and a vented end plate.
  • 2 YEAR LIMITED WARRANTY from date of purchase.
  • Complies with CFR-393 Federal Braking Requirements and meets all Department of Transportation (D.O.T.) regulations.
  • For Drum and Disc Brakes with reliable 12 V DC operation and solid-state electronics!
  • Color-coded, heavy duty 12 Gauge wire for easy and quick install.
    (Black/Constant power, Blue/Brake controller, White/Ground, Yellow/Break-away)
  • 4 ft. Wire, Enough Length to Customize Any Job.
  • Required use of D.O.T. 3 or 4 Brake Fluid. (Not included.)
  • Compatible with any trailer configuration with 1-3 axles.


Weight 12 lbs
Dimensions 14 × 8 × 4 in

1000 PSI, 1200 PSI, 1600 PSI


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