Dorman W37390 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Dorman W37390 drum brake wheel cylinder is engineered to restore proper brake function in compatible vehicles. Designed with durable cast iron and a 0.75-inch bore diameter, this component ensures consistent hydraulic pressure for safe stopping performance.

• Includes bleeder screw for easy brake system bleeding
• Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size
• Constructed from cast iron for strength and longevity
• Thread pitch of 1.0 for secure brake line connection
• Package contains one drum brake wheel cylinder

Durable Construction and Precise Specifications

The Dorman W37390 wheel cylinder features a cast iron casting material that provides resistance to wear and corrosion, essential for maintaining brake system integrity. The 0.75-inch bore diameter is designed to deliver the correct hydraulic force to the brake shoes, ensuring effective braking response. The included bleeder screw simplifies maintenance by allowing trapped air to be released from the brake lines, which is critical for optimal brake performance. The brake line inlet thread diameter of 10 mm and M10 x 1.0 thread size with a 1.0 thread pitch ensure compatibility with specific brake lines, providing a secure and leak-free connection.

Compatible Vehicles and Common Applications

This drum brake wheel cylinder is compatible with various vehicle makes and models that require a 0.75-inch bore diameter and M10 x 1.0 brake line inlet thread size. It is commonly used in older or classic vehicles equipped with drum brake systems. The Dorman W37390 is suitable for addressing the following brake system issues:

• Leaking or damaged wheel cylinders causing brake fluid loss
• Spongy or unresponsive brake pedal due to air in brake lines
• Uneven brake shoe wear from inconsistent hydraulic pressure
• Brake drag caused by sticking or seized wheel cylinders
• Brake fluid contamination affecting cylinder performance

Installation Notes and Tips

When installing the Dorman W37390 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove any air pockets. Verify that the brake line inlet threads match the M10 x 1.0 specification to avoid leaks. Inspect brake shoes and hardware for wear or damage during replacement to maintain overall brake system reliability. Use appropriate brake fluid and follow manufacturer torque specifications for all fittings.

Quality Assurance and Warranty

Dorman manufactures the W37390 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. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in material and workmanship. Consult product documentation for exact warranty terms.