Dorman W37640 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Ford and Mazda Vehicles

The Dorman W37640 drum brake wheel cylinder is engineered to restore proper braking function for select Ford and Mazda models. Designed with durable cast iron and precise dimensions, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

• Includes bleeder screw for easy brake bleeding
• Cast iron construction for strength and durability
• Brake line inlet thread diameter: 10 mm
• Brake component inlet thread size: M10 x 1.0 with 1.0 thread pitch
• Bore diameter of 0.813 inches for accurate fitment
• Package contains one drum brake wheel cylinder

Technical Details and Specifications

The Dorman W37640 wheel cylinder features a cast iron casting material that provides reliable resistance to wear and corrosion. Its bore diameter of 0.813 inches is designed to match the hydraulic requirements of drum brake systems on compatible vehicles. The included bleeder screw simplifies maintenance by allowing trapped air to be released from the brake lines, although a bleeder screw cap is not included. The brake line inlet thread diameter is 10 mm, with a thread size of M10 x 1.0 and a pitch of 1.0, ensuring secure and leak-free connections.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with various Ford and Mazda models, including the Ford Ranger, Bronco II, and Mazda B2300, B3000, and B4000. It is designed specifically for these vehicles' brake hydraulics systems, providing a direct replacement for worn or damaged wheel cylinders.

• Restores proper hydraulic pressure in drum brake systems
• Eliminates brake fluid leaks from faulty wheel cylinders
• Resolves uneven or spongy brake pedal feel
• Prevents brake drag caused by stuck pistons
• Addresses brake noise related to cylinder malfunction

Installation Notes and Tips

When installing the Dorman W37640 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely lifted. Use the included bleeder screw to remove air from the brake lines after installation. Verify that the brake line inlet threads match the vehicle’s specifications to avoid leaks. It is recommended to inspect brake shoes and hardware during installation for optimal brake system performance.

Quality Assurance and Warranty

Dorman manufactures the W37640 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise machining contribute to long service life. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship under normal use.