Dorman W37017 Drum Brake Wheel Cylinder - Front Left or Rear Left

Reliable Drum Brake Wheel Cylinder for Buick LeSabre and Riviera

The Dorman W37017 drum brake wheel cylinder is engineered to restore proper braking function in select Buick models. Designed specifically for the Buick LeSabre and Riviera, this component ensures consistent hydraulic pressure within the drum brake system.

• Includes bleeder screw for easy brake fluid bleeding
• Cast iron construction for durability and strength
• 1.125 inch bore diameter for precise fit and performance
• Brake line inlet thread diameter of 0.437 inches
• Brake component inlet thread size 7/16-20 UNF
• Package contains one drum brake wheel cylinder

Durable Construction and Precise Specifications

Manufactured from cast iron, the Dorman W37017 wheel cylinder offers robust resistance to wear and corrosion, essential for maintaining brake system integrity. The 1.125 inch bore diameter is calibrated to match the hydraulic requirements of the Buick LeSabre and Riviera drum brake assemblies. The included bleeder screw facilitates straightforward brake fluid evacuation, although a bleeder screw cap is not included. Thread specifications, including a 0.437 inch brake line inlet diameter and 7/16-20 UNF brake component inlet thread size, ensure compatibility with factory brake lines and fittings.

Compatible Applications and Common Repairs

This drum brake wheel cylinder is compatible with the following Buick models:

• Buick LeSabre
• Buick Riviera

It is commonly used to address issues such as:

• Brake fluid leaks from worn or damaged wheel cylinders
• Reduced braking efficiency due to cylinder bore wear
• Spongy or soft brake pedal feel caused by hydraulic failure
• Uneven brake shoe wear resulting from cylinder malfunction
• Brake drag or sticking caused by seized pistons

Installation Notes and Tips

When installing the Dorman W37017 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. Use the included bleeder screw to properly bleed air from the brake lines after installation. Verify thread compatibility with existing brake lines before assembly. It is recommended to inspect brake shoes and hardware during replacement to maintain optimal braking performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance for your Buick LeSabre or Riviera. The W37017 wheel cylinder is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use. Refer to Dorman's official warranty documentation for specific terms and conditions.