Dorman W45998 Drum Brake Wheel Cylinder - Front Right

Reliable Drum Brake Wheel Cylinder for Chevrolet and GMC Vehicles

The Dorman W45998 drum brake wheel cylinder is engineered to restore proper braking function in select Chevrolet and GMC models. Designed with durable cast iron and precise dimensions, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

• Includes bleeder screw for easy brake system bleeding
• Cast iron construction for strength and durability
• 1.125 inch bore diameter for accurate fit and function
• 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

Technical Details and Specifications

The Dorman W45998 wheel cylinder features a cast iron casting material that provides long-lasting resistance to wear and corrosion. Its 1.125 inch bore diameter is designed to match the hydraulic requirements of drum brake systems on Chevrolet Blazer, GMC Jimmy, and C10 Suburban models. The brake line inlet thread diameter measures 0.437 inches, with a brake component inlet thread size of 7/16-20 UNF, ensuring compatibility with factory brake lines. A bleeder screw is included to facilitate proper brake fluid bleeding during installation, although a bleeder screw cap is not provided.

Compatible Vehicles and Applications

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

• Chevrolet Blazer
• GMC Jimmy
• Chevrolet C10 Suburban

Use the Dorman W45998 to replace worn or leaking wheel cylinders in these models to maintain effective brake hydraulics and vehicle safety.

Common Issues Addressed by This Wheel Cylinder

• Brake fluid leaks from the wheel cylinder
• Spongy or soft brake pedal feel
• Uneven brake application or reduced braking power
• Brake drag caused by stuck pistons
• Corrosion or damage to the original wheel cylinder

Installation Notes and Tips

When installing the Dorman W45998 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air and maintain hydraulic pressure. Verify thread sizes match the vehicle’s brake lines before installation. Inspect brake shoes and hardware for wear and replace as necessary to ensure optimal braking performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The W45998 wheel cylinder undergoes rigorous quality checks to ensure durability and reliability. Please refer to Dorman’s warranty policy for specific coverage details.