Raybestos WC370148 Drum Brake Wheel Cylinder - Rear, Rear Left or Rear Right

Raybestos Element3 WC370148 Drum Brake Wheel Cylinder

Raybestos Element3 WC370148 is a rear drum brake wheel cylinder built for specific Chevrolet Colorado, GMC Canyon, and Isuzu rear brake applications. With a 0.906-inch cylinder bore diameter, it supports consistent hydraulic actuation in drum brake systems where precise wheel cylinder operation matters.

Key Features

• 0.906-inch cylinder bore diameter for the specified rear drum brake application
• Raybestos Element3 product line for brake hydraulic service parts
• Direct-fit replacement for select Chevrolet Colorado, GMC Canyon, and Isuzu models
• Cross-references Centric Parts 134.66027 and Dorman - First Stop W610121 for the same application
• Part number WC370148 for easy identification and ordering

Product Details

The Raybestos Element3 WC370148 wheel cylinder is intended for rear drum brake service on 2004-2008 Chevrolet Colorado and 2004-2008 GMC Canyon models, along with select 2006-2008 Isuzu i-280, i-350, i-370, and i-290 rear brake applications. The Element3 line focuses on brake hydraulic components that match the needs of everyday repair work, and this wheel cylinder’s 0.906 bore diameter is a key specification for proper brake shoe actuation and hydraulic response. If you are replacing a leaking or worn rear wheel cylinder on a Chevrolet Colorado or GMC Canyon, WC370148 provides the correct fitment for the listed vehicles.

This part cross-references Centric Parts 134.66027 and Dorman - First Stop W610121 for the same application.

What It Helps Fix

• Brake fluid leakage at the rear wheel cylinder
• Soft or inconsistent rear drum brake pedal feel
• Uneven rear brake shoe movement
• Reduced hydraulic pressure transfer in the rear drum brake system
• Brake performance issues caused by a worn cylinder bore or seals

Installation Notes and Tips

• Confirm rear drum brake fitment by year, make, model, and position before installation.
• Inspect brake shoes, drums, and hydraulic lines for wear or contamination during service.
• Bleed the brake system after wheel cylinder replacement to remove air from the hydraulic circuit.
• Verify the cylinder bore diameter matches the original application specification.

Quality Assurance

Raybestos Element3 brake hydraulic parts are built for service-focused replacement applications. WC370148 is specified with a 0.906-inch bore diameter and listed fitment for rear brake positions on the vehicles shown above.