Dorman W37100 Drum Brake Wheel Cylinder - Front Left

Reliable Drum Brake Wheel Cylinder for Pontiac Models

The Dorman W37100 drum brake wheel cylinder is engineered to restore proper braking function for select Pontiac vehicles. Designed specifically for the Bonneville, Catalina, and Grand Prix models, 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 corrosion resistance
• 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

The Dorman W37100 wheel cylinder features a cast iron casting material that provides strength and longevity under demanding braking conditions. Its 1.125 inch bore diameter is designed to match factory specifications, ensuring proper hydraulic pressure and brake shoe movement. The included bleeder screw simplifies maintenance by allowing air to be efficiently removed from the brake lines. Thread sizes, including a 0.437 inch brake line inlet diameter and 7/16-20 UNF brake component inlet thread, are engineered for compatibility with original equipment brake lines on Pontiac Bonneville, Catalina, and Grand Prix models.

Compatible Pontiac Models and Applications

This drum brake wheel cylinder is compatible with the following Pontiac vehicles:

• Pontiac Bonneville
• Pontiac Catalina
• Pontiac Grand Prix

It is designed to replace worn or leaking wheel cylinders that can cause brake drag, reduced braking efficiency, or fluid leaks.

Common Issues Addressed by This Wheel Cylinder

• Brake fluid leaks from the wheel cylinder
• Spongy or soft brake pedal feel
• Uneven brake shoe wear
• Reduced braking performance in drum brake systems
• Brake drag caused by stuck pistons

Installation Notes and Tips

When installing the Dorman W37100 wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air pockets. Verify thread compatibility with existing brake lines and fittings. Inspect brake shoes and hardware for wear and replace as necessary to maintain optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications for mounting bolts.

Quality Assurance and Warranty

Dorman manufactures the W37100 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides reliable durability in demanding braking environments. This part is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use.