Dorman W37645 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Buick and Chevrolet Models

The Dorman W37645 drum brake wheel cylinder is engineered to restore proper braking function in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed with durable cast iron construction and precise specifications, this component ensures consistent hydraulic pressure for safe and effective braking.

• Includes bleeder screw for easy brake system bleeding
• Cast iron casting material for strength and durability
• Bore diameter of 0.813 inches for accurate fitment
• Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size and 1.0 thread pitch
• Package contains one drum brake wheel cylinder

Technical Details and Specifications

The Dorman W37645 wheel cylinder features a cast iron body that withstands the rigors of brake system pressure and heat. Its 0.813-inch bore diameter matches OEM specifications for a precise fit in drum brake assemblies. The included bleeder screw simplifies maintenance by allowing trapped air to be released from the brake hydraulics, improving pedal feel and braking response. The brake line inlet thread diameter is 10 mm, with an M10 x 1.0 thread size and 1.0 thread pitch, ensuring compatibility with factory brake lines on compatible vehicles.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with various Buick, Chevrolet, Oldsmobile, and Pontiac models, including the Buick Century, Chevrolet Celebrity, Oldsmobile Cutlass Ciera, and Pontiac 6000. The part number W37645 is designed specifically for these vehicles, providing a direct replacement for worn or leaking wheel cylinders in the rear drum brake system.

• Restores proper hydraulic pressure in drum brake systems
• Eliminates brake fluid leaks from worn wheel cylinders
• Improves brake pedal feel and responsiveness
• Prevents uneven brake wear and potential brake failure
• Addresses brake dragging or sticking caused by faulty cylinders

Installation Notes and Tips

When installing the Dorman W37645 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. Use the included bleeder screw to remove air from the brake lines after installation. Inspect brake shoes and hardware for wear and replace as necessary to maintain optimal braking performance. Proper torque specifications should be followed for brake line fittings to prevent leaks.

Quality Assurance and Warranty

Dorman manufactures the W37645 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides durability under normal operating conditions. This part is backed by Dorman's limited warranty, which covers defects in material and workmanship, ensuring reliable performance for your Buick, Chevrolet, Oldsmobile, or Pontiac vehicle.