Dorman W37574 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Ford and Mazda Vehicles

The Dorman W37574 drum brake wheel cylinder is engineered to restore proper braking function for select Ford and Mazda 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 system bleeding
• Cast iron casting material for strength and durability
• 0.75 inch bore diameter for accurate fit and function
• Brake line inlet thread diameter of 0.437 inches
• Brake component inlet thread size 7/16-24
• Package contains one drum brake wheel cylinder

Detailed Product Description

The Dorman W37574 drum brake wheel cylinder is specifically designed for compatibility with Ford Aerostar, Bronco II, Ranger, and Mazda B2300, B3000, and B4000 models. Its cast iron construction provides reliable resistance to wear and corrosion, essential for maintaining brake system integrity. The included bleeder screw simplifies the brake bleeding process, although a bleeder screw cap is not included. With a bore diameter of 0.75 inches and a brake line inlet thread diameter of 0.437 inches, this wheel cylinder meets exacting OEM specifications to ensure proper hydraulic pressure and brake response.

Common Applications and Issues Addressed

• Restores braking performance in vehicles with leaking or seized wheel cylinders
• Eliminates brake fluid leaks at the drum brake assembly
• Resolves uneven brake application or dragging brakes
• Prevents brake fade caused by compromised hydraulic pressure
• Replaces worn or corroded wheel cylinders in Ford Aerostar and Mazda B-series trucks

Installation Notes and Tips

When installing the Dorman W37574 drum brake wheel cylinder, ensure the brake system is fully depressurized before removal. Use the included bleeder screw to properly bleed air from the brake lines after installation. Verify thread sizes—0.437 inch brake line inlet and 7/16-24 brake component inlet—to ensure compatibility with your vehicle’s brake lines. Inspect brake shoes and drums for wear during installation and replace if necessary to maintain optimal braking performance.

Quality Assurance and Warranty

Dorman manufactures the W37574 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 under normal operating conditions. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship for a specified period. Refer to Dorman’s warranty documentation for complete details.