Dorman W37426 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for BMW 320i

The Dorman W37426 drum brake wheel cylinder is engineered to restore proper braking function for your BMW 320i. Designed with durable cast iron and precise specifications, this component ensures consistent hydraulic pressure within the brake system.

• Includes bleeder screw for easy brake fluid bleeding
• Brake line inlet thread diameter: 10 mm
• Brake component inlet thread size: M10 x 1.0 with 1.0 thread pitch
• Bore diameter of 0.75 inches for accurate fitment
• Constructed from cast iron for strength and durability
• Package contains one drum brake wheel cylinder

Technical Details and Specifications

The Dorman W37426 wheel cylinder is specifically designed for the BMW 320i, ensuring compatibility and reliable performance. Its cast iron construction provides resistance to wear and corrosion, essential for maintaining brake system integrity. The bore diameter of 0.75 inches matches OEM specifications, allowing for proper piston movement and hydraulic pressure. The included bleeder screw simplifies maintenance by enabling efficient removal of air from the brake lines. The brake line inlet thread diameter of 10 mm and M10 x 1.0 thread size with a 1.0 pitch ensure secure connections within the brake hydraulics.

Common Applications and Problem Resolution

• Restores braking performance by replacing leaking or seized wheel cylinders
• Eliminates brake fluid leaks that cause reduced hydraulic pressure
• Addresses uneven brake wear due to malfunctioning wheel cylinders
• Prevents brake drag caused by stuck pistons within the cylinder
• Improves overall brake system responsiveness and safety

Installation Notes and Tips

When installing the Dorman W37426 drum brake wheel cylinder on your BMW 320i, ensure the brake system is fully depressurized before removal. Use the included bleeder screw to properly bleed air from the brake lines after installation. Verify thread compatibility with the brake line inlet to avoid cross-threading. Inspect brake shoes and hardware for wear during replacement to maintain optimal braking performance.

Quality Assurance and Warranty

Dorman manufactures the W37426 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction offers durability under typical operating conditions. This part includes a bleeder screw for maintenance convenience. Warranty coverage details can be obtained from the product documentation or manufacturer, ensuring confidence in the component's reliability.