Dorman W9004 Drum Brake Wheel Cylinder - Front Left

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Dorman W9004 drum brake wheel cylinder is engineered to restore proper brake function in vehicles requiring a 1-inch bore diameter cylinder. Designed with durable cast iron construction, this component ensures consistent performance and longevity for your brake hydraulics system.

• Includes bleeder screw for easy brake fluid bleeding
• Constructed from cast iron for strength and durability
• 1-inch bore diameter suitable for specific drum brake applications
• Brake component inlet thread size: 3/8-24 UNF
• Thread diameter: 3/8 inch
• Package contains one drum brake wheel cylinder

Durable Cast Iron Construction and Precise Specifications

The Dorman W9004 wheel cylinder is made from cast iron, providing a robust and corrosion-resistant component that withstands the demands of brake system pressure. The 1-inch bore diameter is designed to match exact OEM specifications, ensuring proper hydraulic pressure and brake shoe movement. The included bleeder screw simplifies maintenance by allowing efficient removal of air from the brake lines, which is critical for maintaining brake responsiveness and safety.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with various vehicle makes and models that require a 1-inch bore diameter and 3/8-24 UNF inlet thread size. It is commonly used in older domestic and import vehicles with drum brake systems. For precise fitment, verify your vehicle’s brake system specifications and part number W9004 compatibility before installation.

Common Brake Issues Addressed by the W9004 Cylinder

• Brake fluid leaks from worn or damaged wheel cylinders
• Spongy or unresponsive brake pedal due to air in brake lines
• Uneven brake shoe wear caused by malfunctioning wheel cylinders
• Reduced braking efficiency from corroded or seized components
• Brake drag or sticking shoes resulting from cylinder failure

Installation Notes and Tips

When installing the Dorman W9004 drum brake wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely lifted. Use the included bleeder screw to properly bleed the brake system after installation to remove any trapped air. Inspect brake shoes and hardware for wear and replace as necessary to maintain optimal braking performance. Follow manufacturer torque specifications for inlet fittings and mounting bolts.

Quality Assurance and Warranty Information

Dorman manufactures the W9004 wheel cylinder to meet or exceed OEM standards, using quality cast iron materials and precise machining. The product includes a bleeder screw for maintenance convenience. While specific warranty details vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or Dorman’s official resources for exact warranty terms.