Dorman 11304 Drum Brake Wheel Cylinder Kit - Front Lower, Front Upper or Rear Upper

Overview of Dorman 11304 Drum Brake Wheel Cylinder Kit

The Dorman 11304 Drum Brake Wheel Cylinder Kit is designed to restore reliable braking performance for vehicles requiring a 1.125-inch bore size wheel cylinder. This kit includes essential components such as dust boots, seals, and wheel cylinder cups to ensure a proper rebuild of the drum brake system.

• Includes dust boots and seals for effective protection
• Wheel cylinder cups included for a complete rebuild
• 1.125 inch bore size compatible with specific drum brake systems
• Does not include bleeder screw or mounting hardware
• Part number 11304 for precise identification

Detailed Product Features and Specifications

The Dorman 11304 kit is engineered to meet the specifications of drum brake wheel cylinders with a 1.125 inch bore size. It contains dust boots and seals that help prevent contamination and maintain hydraulic integrity. Wheel cylinder cups are included to replace worn components, but note that pistons, bleeder screws, and mounting hardware are not part of this kit. This makes it suitable for technicians who need to refurbish the wheel cylinder assembly while reusing existing hardware where applicable.

Compatible Vehicles and Applications

This drum brake wheel cylinder kit is compatible with various domestic and import vehicles that utilize a 1.125 inch bore size wheel cylinder. Commonly found on certain Ford, Chevrolet, and Dodge models, the Dorman 11304 is a practical choice for restoring braking function on older trucks and passenger cars. Always verify fitment with your vehicle’s make, model, and year before installation.

Common Issues Addressed by the Dorman 11304 Kit

• Leaking or damaged wheel cylinder seals causing brake fluid loss
• Worn dust boots allowing dirt and moisture intrusion
• Corroded or pitted wheel cylinder cups affecting piston movement
• Brake drag or uneven braking due to compromised wheel cylinder components
• Reduced braking efficiency from deteriorated hydraulic seals

Installation Notes and Tips

When installing the Dorman 11304 kit, ensure the brake system is fully depressurized and the vehicle is securely supported. Clean the wheel cylinder bore thoroughly before assembly to prevent contamination. Replace all seals and boots included in the kit, and inspect the pistons and hardware for wear. Since bleeder screws and mounting hardware are not included, reuse existing parts if in good condition or source replacements separately. Proper lubrication of seals during installation will aid in smooth piston operation.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for durability and performance. The 11304 Drum Brake Wheel Cylinder Kit undergoes quality checks to ensure fit and function. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.