Dorman W37787 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Select Vehicles

The Dorman W37787 drum brake wheel cylinder is engineered to restore proper braking function in compatible Chrysler, Dodge, Ford, Kia, Mazda, Mercury, and Plymouth models. Designed with durable cast iron construction and precise specifications, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

• Includes bleeder screw for easy brake fluid bleeding
• Brake line inlet thread diameter: 10 mm
• Brake component inlet thread size: M10 x 1.0 with 1.0 thread pitch
• Bore diameter measures 0.688 inches for accurate fitment
• Constructed from cast iron for strength and durability
• Package contains one drum brake wheel cylinder

Technical Details and Specifications

The Dorman W37787 wheel cylinder features a cast iron casting material that provides reliable resistance to wear and corrosion. Its bore diameter of 0.688 inches is designed to match original equipment specifications, ensuring proper hydraulic pressure within the drum brake system. The included bleeder screw simplifies maintenance by allowing trapped air to be released from the brake lines, improving brake responsiveness. The brake line inlet thread diameter of 10 mm and M10 x 1.0 thread size with a 1.0 pitch ensure compatibility with factory brake lines on supported vehicles.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with a range of vehicles including Chrysler 323, Dodge Neon, Ford Escort, Kia Rio, Mazda 626, Mercury Tracer, Plymouth Spectra, and other models such as the Mazda MX-3, MX-6, Probe, Protege, Protege5, and Sephia. The part number W37787 is specifically designed to meet the hydraulic brake requirements of these vehicles, making it a suitable replacement for worn or leaking wheel cylinders.

Common Issues Addressed by This Wheel Cylinder

• Brake fluid leaks causing reduced braking efficiency
• Spongy or soft brake pedal feel due to air in brake lines
• Uneven brake application leading to pulling or noise
• Corroded or seized wheel cylinder pistons affecting brake response
• Brake drag caused by malfunctioning wheel cylinder components

Installation Notes and Tips

When installing the Dorman W37787 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove any air pockets. Verify thread compatibility with the brake line inlet (M10 x 1.0) before installation. Inspect brake shoes and drums for wear and replace if necessary to maintain optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications for all fittings.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The W37787 drum brake wheel cylinder undergoes rigorous quality control to ensure proper fit and function. This part is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use conditions.