Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37646

Keep your rear drum brakes applying with steady hydraulic force with this Dorman drum brake wheel cylinder, First Stop part number W37646, a rear right unit that pushes the brake shoes outward against the drum each time you press the pedal. It fits many vehicles, among them the 1986-2002 Toyota Corolla, 1998-2002 Chevrolet Prizm and 1992-1999 Toyota Paseo. See the Buyer's Guide tab for the full list and engine details.

This direct replacement wheel cylinder is engineered as a direct match for the original unit on the listed vehicles, reproducing its fit and function. Each unit is manufactured and tested for quality.

• Ideal replacement: Designed as a direct match for the original drum brake wheel cylinder on the listed applications.
• Cost-effective service: Replacing the wheel cylinder while the drum brakes are already apart is a practical step during a brake job.
• Quality materials: Built with EPDM rubber cups and boots.
• Professionally tested: The bores are surface-tested to help provide a good sealing surface for the pressure cups.

Signs a wheel cylinder may need replacing include brake fluid seeping at the wheel or onto the inside of the tire, a soft or low brake pedal, or uneven braking. Diagnose the cause before replacing parts, and bleed the brake system after installation as directed by the vehicle service information.