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Hydrastar® MARINE Electric Over Hydraulic (EOH) Plug In Play Actuator - 7 RV Plug Connection

SKU
Original price $1,175.00 - Original price $1,175.00
Original price $1,175.00
$1,241.00
$1,241.00 - $1,241.00
Current price $1,241.00

Marine-rated GEN 8 actuator built for boat trailers that go in the water. Sealed anodized aluminum housing with stainless hardware, EPDM gaskets, and a vented end plate rated for submersion. Delivers up to 1,600 PSI for disc and drum brakes on 1–3 axle trailers.

1,000–1,600 PSI
1–3 Axles
2 YR Warranty
MARINE Rated
American Flag Made in the USA
Which PSI Do I Need? Select From Dropdown Below
1600 PSI Disc brakes Most applications — recommended
1200 PSI Heavy-duty drum brakes 7K+ lb axles
1000 PSI Standard drum brakes Under 7K lbs
Not sure? Disc brakes or converting to disc = 1600 PSI. Call (812) 655-4544
Questions about fitment?

Feel free to reach out to us or start a live chat in the bottom right corner for assistance.

Additional Details

Specifications & Compliance

The Hydrastar® Electric Over Hydraulic (EOH) brake actuators lead the industry not only in ease of installation but also in compliance with all Department of Transportation (D.O.T.) braking requirements. Designed to significantly enhance stopping performance, Hydrastar® is the choice for trailers transporting horses, cars, construction, and farm equipment, ensuring the highest level of braking safety with the industry's fastest response time.
Marine-Ready Durability: Crafted to endure aquatic environments and extreme temperatures with a durable, sealed, fully enclosed extruded anodized aluminum housing case (not cast or plastic), complemented by premium stainless steel hardware, EPDM gaskets, and a vented end plate.
2-Year Limited Warranty: Peace of mind with a 2-year limited warranty from the date of purchase.
Regulatory Compliance: Meets CFR-393 Federal Braking Requirements and all Department of Transportation (D.O.T.) regulations.
Versatile Brake Compatibility: Suitable for Drum and Disc Brakes, featuring reliable 12 V DC operation and solid-state electronics.
Easy Installation: Equipped with color-coded, heavy-duty 12 Gauge wire for a quick setup (Black for constant power, Blue for the brake controller, White for ground, Yellow for break-away).
Flexible Wire Length: Includes 4 ft. of wire, providing ample length for any customization needs.
Fluid Requirements: Designed for use with D.O.T. 3 or 4 Brake Fluid (not included).
Universal Compatibility: Fits any trailer configuration with 1-3 axles, offering wide application flexibility.
Experience effortless setup with the Hydrastar® MARINE Plug ‘n’ Play system, which includes:
Break-away Battery Kit
Why It's Better

The Only EOH Actuator That Works With Every Controller

Instant Response

12V DC pump fires the moment your brake controller sends a signal. No surge delay.

No CAM Needed

The only EOH actuator universally compatible with every brake controller. No adapter modules.

Saltwater Sealed

Stainless hardware, EPDM gaskets, and vented backing plate. Built for submersion at the boat ramp.

Reverse Without Lockout

Electric control means brakes stay disengaged when backing up. No lockout pin needed.

Specifications

Technical Details

Type Electric Over Hydraulic (EOH) — Marine Grade
Max Pressure 1,600 PSI (also available: 1,200 & 1,000)
Brakes Disc and drum
Axles 1–3 axles, any configuration
Housing Extruded anodized aluminum, sealed, stainless hardware, EPDM gaskets
Dimensions 11-3/4" L x 3" W x 7-3/8" H
Power 12V DC, solid-state electronics
Hydraulic Port 3/16"
Wire 12 AWG, color-coded — Black (power), Blue (controller), White (ground), Yellow (breakaway)
Fluid DOT 3 or DOT 4. Do not use DOT 5.
Controllers All factory in-dash & aftermarket — no CAM required. *Verify with your controller manufacturer that it is EOH compatible.
Compliance DOT · CFR-393 Federal Braking Requirements
Warranty Actuator: 2 years · Brakes & components: 3 years
Origin Made in the USA — Greendale, Indiana
What You Get

In The Box & Sold Separately

Included
✓ GEN 8 EOH brake actuator
✓ 12 AWG wiring harness
✓ Mounting hardware
✓ Installation guide
✓ Pre-wired Plug & Play harness
✓ Controller Adapter Module (CAM)
Sold Separately
– DOT 3 or DOT 4 brake fluid
Common Questions

Before You Buy

Do I need a CAM (Controller Adapter Module)?+
No. The GEN 8 works with all factory and aftermarket brake controllers without any adapter. This is the only EOH actuator on the market with universal compatibility.
Can I submerge it at the boat ramp?+
Yes. The marine actuator is sealed for submersion during launch and retrieval.
Is the buzzing noise normal?+
Yes. That’s the pump building and holding pressure. Completely normal.
How do I bleed the system?+
Start at the furthest caliper. Open the bleeder, pump DOT 3 through until no air bubbles. Work toward the actuator. Two full passes.
What fluid does it use?+
DOT 3 or DOT 4. Do not use DOT 5 — silicone fluid will damage the seals.
Documentation

Manuals & Resources

Technical Manual ↗
Installation & service guide
Electrical Diagrams ↗
Wiring schematics
Compatibility Chart ↗
Vehicle & controller reference

Caution: Do not power wash the actuator or take it through a commercial car wash. High-pressure water may damage the seals.

2024–2026 GM Truck & SUV Owners

Dashboard showing “Service Trailer Brakes”? Brakes disabled?

Affects Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, Colorado, Canyon & Hummer EV with integrated trailer brake controller.

That’s a known GM compatibility issue across the 2024–2026 lineup. Hydrastar has the fix — the GM Diode Module (#381-7074) is a plug-and-play inline solution.

New Ford Truck Owners

Connectivity issues before or after the dealer flash? Brakes dropping in and out?

Affects new Ford trucks when switching from electric mode to EOH mode.

Our Hydrastar Controller Adapter Module (#381-7073) has been very successful resolving this for Ford owners. Note: this is not a Hydrastar issue — just a Hydrastar part that helps.

Need Help Choosing?
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