Dorman W37423 Drum Brake Wheel Cylinder - Rear

Overview of Dorman Drum Brake Wheel Cylinder W37423

The Dorman W37423 drum brake wheel cylinder is designed specifically for select Buick and Oldsmobile models, including the Riviera and Toronado. This component plays a critical role in your vehicle's brake hydraulics system, ensuring reliable braking performance.

• Includes bleeder screw for easy brake fluid bleeding
• Cast iron construction for durability and strength
• Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size
• Bore diameter measures 0.75 inches for precise fitment
• Package contains one drum brake wheel cylinder

Detailed Product Description

The Dorman W37423 drum brake wheel cylinder is engineered with a cast iron casting material, providing robust resistance to wear and corrosion. It features a 0.75-inch bore diameter, which is essential for proper hydraulic pressure application within the brake system. The brake line inlet thread diameter is 10 mm, with a thread pitch of 1.0 and a brake component inlet thread size of M10 x 1.0, ensuring compatibility with the brake lines on Buick Riviera and Oldsmobile Toronado models. The included bleeder screw facilitates straightforward brake fluid bleeding, although a bleeder screw cap is not included.

Compatible Vehicles and Applications

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

• Buick Riviera
• Oldsmobile Toronado

It is designed to replace worn or leaking wheel cylinders in the brake hydraulics system, restoring proper brake function and safety.

Common Issues Addressed by This Part

• Brake fluid leaks from the wheel cylinder
• Reduced braking efficiency due to worn cylinder bore
• Brake pedal feels spongy or soft
• Uneven brake shoe wear
• Brake dragging or sticking caused by cylinder malfunction

Installation Notes and Tips

• Ensure the brake system is properly bled after installation using the included bleeder screw
• Inspect brake lines and fittings for damage or corrosion before reassembly
• Use appropriate tools to avoid damaging the M10 x 1.0 brake line inlet threads
• Follow vehicle-specific service manual instructions for removal and installation

Quality Assurance and Warranty

Dorman manufactures this drum brake wheel cylinder to meet or exceed OEM specifications for fit, form, and function. The cast iron construction provides long-lasting durability under normal operating conditions. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics components. Refer to the product packaging or Dorman's official documentation for exact warranty terms.