Dexter K71-130-00 Left Hand Wheel Cylinder Assembly for 10 and 12 Inch Uni-Servo Trailer Brakes

The Dexter K71-130-00 is a left hand wheel cylinder assembly built for 10 inch and 12 inch Uni-Servo trailer drum brakes. As the hydraulic actuator inside the brake assembly, the wheel cylinder converts brake fluid pressure from the trailer's hydraulic line into the mechanical force that pushes the brake shoes outward against the drum. This is the left hand (left side) version of the assembly; the right hand wheel cylinder is a separate part with its own part number, so confirm you are ordering the correct side before installing.

The cylinder body is constructed of aluminum, keeping the assembly lightweight while resisting corrosion in the wet, salt-exposed conditions common to boat trailers and other towed equipment. It is designed as a direct fit for Dexter Uni-Servo drum brake systems in the 10 inch and 12 inch sizes, restoring proper brake actuation when the original wheel cylinder is leaking, seized, or worn. Replacing a failing wheel cylinder promptly helps prevent brake fluid loss, uneven braking, and further wear on the shoes and drum.

Specifications

• Brand: Dexter
• Manufacturer Part Number: K71-130-00
• Side: Left Hand
• Compatible Brake Sizes: 10 inch and 12 inch
• Brake Type: Uni-Servo
• Material: Aluminum
• Weight: 0.65 pounds
• Category: Trailer Drum Brakes

Fitment

Fits Dexter 10 inch and 12 inch Uni-Servo trailer drum brake assemblies, left hand side only.

Frequently Asked Questions

What is the Dexter K71-130-00 wheel cylinder used for? It is the hydraulic actuator that pushes the brake shoes outward against the drum on Dexter Uni-Servo trailer brakes, and the K71-130-00 is the left hand side version of this assembly.

Is this the left or right side wheel cylinder? The K71-130-00 is the left hand wheel cylinder assembly. The right hand version is a different Dexter part number, so check which side needs replacement before ordering.

What brake sizes does the K71-130-00 fit? This wheel cylinder assembly is built for 10 inch and 12 inch Uni-Servo trailer drum brakes.

What is the wheel cylinder body made of? The K71-130-00 wheel cylinder has an aluminum body, which resists corrosion in wet and salt-exposed trailering environments.

How much does the K71-130-00 weigh? This Dexter wheel cylinder assembly weighs 0.65 pounds.

How do I know if my wheel cylinder needs replacing? Signs of a failing wheel cylinder include visible brake fluid leaking at the wheel, a spongy or low brake pedal, or uneven braking, all of which point to replacing the wheel cylinder such as the Dexter K71-130-00.

Is this a genuine Dexter part? Yes, the K71-130-00 is a genuine Dexter wheel cylinder assembly, not an aftermarket equivalent.

Does the K71-130-00 come as a complete assembly? Yes, it is sold as a complete left hand wheel cylinder assembly ready to install into the Uni-Servo brake backing plate.

Can I use this on a boat trailer? Yes, the Dexter K71-130-00 aluminum wheel cylinder is commonly used on boat trailers and other towed equipment fitted with 10 inch or 12 inch Uni-Servo drum brakes.

Do I need to replace both the left and right wheel cylinders at the same time? It is generally good practice to replace wheel cylinders in pairs so braking force stays balanced side to side, but the K71-130-00 itself is sold as the left hand unit only.