Dorman W13387 Drum Brake Wheel Cylinder - Front Left, Rear Left or Rear Right

Reliable Drum Brake Wheel Cylinder for Buick, Chevrolet, GMC, and Oldsmobile

The Dorman W13387 drum brake wheel cylinder is engineered to restore proper brake function in select Buick, Chevrolet, GMC, and Oldsmobile models. Designed with durable cast iron construction and precise specifications, this wheel cylinder ensures consistent hydraulic pressure for safe braking performance.

• Includes bleeder screw for easy brake system bleeding
• Constructed from cast iron for strength and durability
• 1-inch bore diameter for accurate fit and function
• Brake component inlet thread size: 3/8-24 inches
• Thread diameter: 3/8 inch
• Package contains one drum brake wheel cylinder

Durable Cast Iron Construction and Precise Specifications

The Dorman W13387 wheel cylinder features a cast iron casting material that provides long-lasting durability and resistance to wear. Its 1-inch bore diameter is designed to match original equipment specifications, ensuring proper hydraulic pressure and brake response. The included bleeder screw simplifies maintenance by allowing air to be removed from the brake system efficiently. Thread sizes of 3/8-24 inches for the brake component inlet and 3/8 inch for the thread diameter ensure compatibility with the brake lines on compatible vehicles.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with a range of classic and late-model vehicles, including Buick models like Century, LeSabre, Riviera, and Skylark; Chevrolet models such as Bel Air, C10 Suburban, Impala, and Corvette; GMC models including Jimmy, K10 Suburban, and Blazer; as well as Oldsmobile models like Delta 88 and Roadmaster. The part number W13387 is specifically designed to meet the hydraulic brake requirements of these vehicles.

Common Brake Issues Addressed by This Wheel Cylinder

• Brake fluid leaks from worn or damaged wheel cylinders
• Reduced braking efficiency due to internal cylinder corrosion
• Spongy or soft brake pedal caused by air in the brake lines
• Uneven brake shoe wear resulting from inconsistent hydraulic pressure
• Brake drag or sticking caused by seized wheel cylinder pistons

Installation Notes and Tips

When installing the Dorman W13387 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. 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 all fittings and connections.

Quality Assurance and Warranty Information

Dorman manufactures the W13387 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise machining contribute to reliable brake system performance. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.