Keep hydraulic pressure moving to your drum-brake shoes with the Dorman - First Stop Drum Brake Wheel Cylinder W37637. This rear-left unit drops in as a direct-fit replacement for the 1983-1998 Toyota Tercel, 1985-1988 Chevrolet Nova, 1986-2002 Toyota Corolla, 1990-1997 Geo Prizm, 1992-1999 Toyota Paseo, and 1998-2002 Chevrolet Prizm (All engines). With the drum already apart, replacing the wheel cylinder is a fast, sure way to keep the drum brake sealing and working correctly.
A wheel cylinder converts hydraulic line pressure into the outward force that pushes the brake shoes against the drum. Dorman built this one as a direct match for the original wheel cylinder on these applications, and each is manufactured and tested for quality.
- Cast-iron body: with a 0.688 in bore surface-tested for an optimal sealing surface for the pressure cups.
- EPDM rubber cups and boots: high-quality materials for long-lasting performance.
- M10 x 1.0 inlet thread: 10 mm thread diameter, 1.0 pitch.
- Bleeder screw included: bleeder screw cap not included.
Signs this part may need replacing include brake fluid seeping at the wheel cylinder or backing plate, a soft or sinking pedal, and uneven drum-brake action. If a leaking or seized wheel cylinder is the cause, this replaces it. Package contents: 1 drum brake wheel cylinder. Country of origin: China.
Manufacturer part number W37637.
Frequently Asked Questions
What vehicles does W37637 fit?
It fits the 1983-1998 Toyota Tercel, 1985-1988 Chevrolet Nova, 1986-2002 Toyota Corolla, 1990-1997 Geo Prizm, 1992-1999 Toyota Paseo, and 1998-2002 Chevrolet Prizm (All engines).
Which position is this wheel cylinder for?
This is the rear-left drum brake wheel cylinder. For balanced braking it's good practice to service the opposite side as well; this listing is for one cylinder.
Does it include a bleeder screw?
Yes, a bleeder screw is included. The bleeder screw cap is not included.
What are the bore size and inlet thread?
The bore inside diameter is 0.688 in, and the inlet uses an M10 x 1.0 thread (10 mm diameter, 1.0 pitch).
How do I know if my wheel cylinder needs replacing?
Watch for brake fluid seeping at the wheel cylinder or backing plate, a soft or sinking pedal, and uneven drum-brake action. If the wheel cylinder is the cause, this replaces it.
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