Dorman W37841 Drum Brake Wheel Cylinder - Rear, Rear Left or Rear Right

Reliable Drum Brake Wheel Cylinder for Toyota Vehicles

The Dorman W37841 drum brake wheel cylinder is designed to restore proper braking function for select Toyota models. Engineered with durable cast iron and precise dimensions, this component ensures consistent hydraulic pressure in your 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 0.875 inches for accurate fitment
• Constructed from cast iron for strength and longevity
• Package contains one drum brake wheel cylinder

Product Details and Specifications

The Dorman W37841 wheel cylinder is specifically designed for Toyota 4Runner, Pickup, T100, and Tacoma models. Its cast iron construction provides durability under high-pressure braking conditions. The included bleeder screw simplifies maintenance by allowing air to be purged from the brake lines, although a bleeder screw cap is not included. The brake line inlet thread diameter measures 10 mm, with a thread size of M10 x 1.0 and a pitch of 1.0, ensuring compatibility with factory brake lines. The bore diameter of 0.875 inches matches OEM specifications for reliable hydraulic performance.

Common Applications and Problem Resolution

• Restores braking pressure in drum brake systems
• Addresses brake fluid leaks from worn or damaged wheel cylinders
• Eliminates spongy brake pedal caused by air in brake lines
• Replaces seized or corroded wheel cylinders affecting brake response
• Improves overall brake system reliability on Toyota 4Runner, Pickup, T100, and Tacoma

Installation Notes and Tips

When installing the Dorman W37841 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely lifted. Use the included bleeder screw to remove air from the brake lines after installation. Verify thread compatibility with your brake lines before assembly. Properly torque all fittings to manufacturer specifications to prevent leaks. It is recommended to inspect brake shoes and hardware during replacement for optimal brake performance.

Quality Assurance and Warranty

Dorman manufactures the W37841 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction offers durability under demanding conditions. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship for a specified period. Refer to Dorman's warranty documentation for complete details.