A-75 Brake Actuator 7.5K Disc Brakes Top Mount 250-031632

Surge Brake Actuator with 2" Ball Coupler

The A-75 Brake Actuator 7.5K Disc Brakes Top Mount 250-031632 is a replacement brake actuator assembly used on compatible EZ Loader boat trailers with hydraulic surge disc brake systems. This EZ Loader A-75 brake actuator includes a 2" ball coupler and is designed for compatible single-axle or tandem-axle disc brake trailers up to a 7,500 lb rating.

This actuator is designed for hydraulic surge brake operation. When the tow vehicle slows, the trailer pushes forward against the actuator, which applies hydraulic pressure to the trailer disc brakes. This model is set up for disc brake applications and includes a backup solenoid to help prevent brake engagement while reversing when properly connected and operating correctly.

The top-mount layout is important. This actuator should be matched to trailers using the correct A-75 actuator style, 2" coupler setup, top-mount actuator configuration, disc brake hydraulic system, mounting pattern, brake line connection, and original EZ Loader trailer brake layout.

This is not a universal coupler or universal brake actuator. Correct fitment depends on the trailer model, VIN, actuator style, brake type, coupler size, trailer GVWR, mounting pattern, solenoid wiring, and brake line routing.

Key Features

• Genuine EZ Loader A-75 brake actuator assembly
• Part number 250-031632
• 7,500 lb rated actuator application when matched correctly
• Designed for compatible hydraulic surge disc brake systems
• Includes 2" ball coupler
• Top-mount actuator configuration
• Backup solenoid included as supplied
• Used on compatible single-axle or tandem-axle disc brake trailer applications

Typical EZ Loader Trailer Applications

This A-75 brake actuator is commonly used on compatible EZ Loader boat trailers equipped with hydraulic surge disc brakes. It is designed for trailer applications requiring a 7,500 lb rated actuator, 2" ball coupler, top-mount actuator layout, and disc brake hydraulic system.

Always compare the part number, actuator model, coupler size, mounting pattern, brake type, solenoid wiring, brake line connection, and trailer VIN before ordering.

Why This Brake Actuator Matters

The brake actuator is the control point for a surge brake trailer. When the tow vehicle slows, the actuator compresses and sends hydraulic pressure through the brake lines to the trailer brakes. If the actuator is worn, leaking, damaged, incorrectly matched, or not functioning properly, braking performance can be reduced or unsafe.

Installation Considerations

• Confirm the trailer uses an A-75 actuator style before ordering.
• Confirm this is the correct disc brake actuator version, not a drum brake actuator version.
• Verify the 2" ball coupler requirement.
• Compare the mounting pattern and top-mount layout to the existing actuator.
• Inspect the brake lines, reverse lockout solenoid wiring, breakaway cable, and safety chains during service.
• Use the correct brake fluid for the trailer brake system.
• Bleed the hydraulic brake system after actuator replacement.
• After installation, test the trailer brakes in a safe area before normal towing.

Fitment Guidance

This is not a universal brake actuator. Correct fitment depends on the trailer model, VIN, actuator model, trailer rating, brake type, coupler size, mounting pattern, brake line connection, top-mount layout, and reverse lockout wiring.

• Confirm part number 250-031632 when possible.
• Confirm the actuator model is A-75.
• Confirm the trailer uses disc brakes.
• Confirm the actuator is rated for the trailer application.
• Confirm the trailer uses a 2" ball coupler.
• Compare mounting holes, frame fitment, and brake line routing before ordering.
• Send photos if you are unsure about fitment.

Associated / Compatible Parts

These components are commonly inspected or serviced when replacing a trailer brake actuator and will be linked as available.

Real-World Insight

A surge brake actuator should be matched carefully to the trailer’s brake type and weight rating. Disc brake actuators and drum brake actuators are not always interchangeable. When replacing an actuator, inspect the brake fluid, brake lines, solenoid wiring, breakaway cable, and coupler hardware so the new actuator is not installed into a system with other unresolved brake issues.

Questions or Need Help Matching Parts?

We’re based in Hardeeville, South Carolina, and help customers across the country match EZ Loader trailer parts correctly.

Call us before ordering if you are unsure. Photos, measurements, trailer information, and VIN details can help us verify fitment faster.

What to Have Ready When You Call

• Trailer year, make, and model
• VIN, if available
• Part number or actuator model from the existing actuator
• Brake type: disc or drum
• Trailer GVWR or axle setup, if known
• Coupler ball size
• Photos of the actuator, coupler, mounting area, brake line connection, solenoid wiring, and trailer tongue