Dorman W3731 Drum Brake Wheel Cylinder - Front Left

Reliable Drum Brake Wheel Cylinder Replacement

The Dorman W3731 drum brake wheel cylinder is engineered to restore proper brake function in compatible vehicles. Designed with durable cast iron construction and precise dimensions, this wheel cylinder ensures consistent hydraulic pressure for safe braking performance.

• Includes bleeder screw for easy brake fluid bleeding
• Cast iron casting material for strength and durability
• 1.25 inch bore diameter for accurate fitment
• Brake line inlet thread diameter of 0.437 inches (7/16-20 thread size)
• Package contains one drum brake wheel cylinder

Product Details and Specifications

The Dorman W3731 wheel cylinder features a 1.25 inch bore diameter, which is critical for maintaining proper hydraulic pressure within the drum brake system. Its cast iron construction provides resistance to wear and corrosion, extending the service life of the component. The included bleeder screw allows for straightforward brake fluid bleeding during installation or maintenance, although a bleeder screw cap is not included. The brake line inlet thread size is 7/16-20, with a diameter of 0.437 inches, ensuring compatibility with specific brake line fittings. This part is designed for use in drum brake systems requiring these exact specifications.

Compatible Vehicles and Applications

This Dorman drum brake wheel cylinder (part number W3731) is compatible with various vehicle makes and models that utilize a 1.25 inch bore diameter wheel cylinder with a 7/16-20 brake line inlet thread. It is commonly used in older domestic and import vehicles equipped with drum brakes. For precise fitment, verify the part number and specifications against your vehicle’s service manual or OEM parts catalog.

Common Brake Issues Addressed

• Brake fluid leaks from worn or damaged wheel cylinders
• Uneven or reduced braking performance due to cylinder failure
• Spongy brake pedal caused by internal cylinder seal wear
• Brake drag or sticking caused by seized wheel cylinder pistons
• Corrosion-related brake system malfunctions in drum brakes

Installation Notes and Tips

When installing the Dorman W3731 wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air and maintain hydraulic integrity. Inspect brake shoes and hardware for wear or damage during replacement. Use the correct brake line fittings matching the 7/16-20 thread size to prevent leaks. Follow vehicle-specific service procedures to ensure safe and effective installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The W3731 wheel cylinder is backed by Dorman’s quality assurance processes. Please consult Dorman’s official warranty documentation for specific coverage details.