Dorman W37646 Drum Brake Wheel Cylinder - Rear Right

Reliable Drum Brake Wheel Cylinder for Chevrolet, Geo, and Toyota

The Dorman W37646 drum brake wheel cylinder is engineered to restore proper braking function in select Chevrolet, Geo, and Toyota models. Designed with durable cast iron and precise dimensions, this component ensures consistent hydraulic pressure for safe stopping performance.

• Includes bleeder screw for easy brake system bleeding
• Cast iron construction for strength and durability
• Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size
• Bore diameter of 0.688 inches for accurate fitment
• Compatible with Chevrolet Nova, Geo Prizm, Toyota Corolla, Paseo, and Tercel

Technical Details and Specifications

The Dorman W37646 drum brake wheel cylinder features a cast iron casting material that provides reliable resistance to wear and corrosion. The bore diameter measures 0.688 inches, ensuring proper piston movement within the cylinder. The brake line inlet thread diameter is 10 mm, with a thread pitch of 1.0 and a brake component inlet thread size of M10 x 1.0, allowing secure connection to the brake line. This wheel cylinder includes a bleeder screw to facilitate brake fluid bleeding during installation or maintenance, although it does not come with a bleeder screw cap. The package contains one drum brake wheel cylinder, ready for installation.

Compatible Vehicle Applications

This wheel cylinder is compatible with several popular models, including Chevrolet Nova, Geo Prizm, Toyota Corolla, Paseo, and Tercel. It is designed specifically for the brake hydraulics system of these vehicles, ensuring proper fit and function when replacing worn or leaking wheel cylinders.

Common Issues Addressed by This Wheel Cylinder

• Brake fluid leaks from worn or damaged wheel cylinders
• Reduced braking efficiency due to uneven brake pressure
• Spongy or soft brake pedal feel caused by hydraulic failure
• Brake drag or sticking caused by seized pistons
• Brake noise or uneven brake shoe wear

Installation Notes and Tips

When installing the Dorman W37646 wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air and maintain hydraulic pressure. Verify thread compatibility with the brake line inlet (M10 x 1.0) before installation. Inspect brake shoes and hardware for wear and replace as necessary to ensure optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications for all fittings.

Quality Assurance and Warranty

Dorman manufactures this wheel cylinder to meet or exceed OEM specifications for durability and performance. The cast iron construction provides long-lasting service life under normal operating conditions. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulic components to cover defects in materials and workmanship.