Convert brake-line pressure into firm, even shoe force with the Dorman - First Stop Drum Brake Wheel Cylinder (W37976), the rear-left hydraulic actuator that pushes the drum-brake shoes outward against the drum. It drops in as a direct replacement for the 1998 Chevrolet Tracker, 1996-1997 Geo Tracker, 1991-1998 Suzuki Sidekick, and 1996-1998 Suzuki X-90 (all engines).
- Direct-fit design: engineered to match the original wheel cylinder's fit, function and performance on the listed vehicles; manufactured and tested for quality assurance.
- Quality materials: built with high-quality EPDM rubber cups and boots for long-lasting sealing.
- Professionally tested: the cylinder bore is surface-tested to provide an optimum sealing surface for the pressure cups.
- Specs: cast iron body, 0.875 in. bore, and an M10 x 1.0 (10 mm) inlet thread. A bleeder screw is included; a bleeder screw cap is not included. Package contains 1 wheel cylinder.
Replacing the cylinder while servicing drum brakes is a fast, cost-effective way to renew the hydraulic side of the job. If a leaking or seized wheel cylinder is behind a fluid weep at the drum, a soft pedal, or uneven rear braking, this part replaces it. Servicing both sides as a matched pair is recommended for balanced braking; this listing is for one rear-left unit. Country of origin: China.
Interchange: 172-2257 · 1722257 · 174-1092 · 1741092 · 18E385 · 84-10012 · 8410012 · W906718 · W-50012 · W50012 · 072-8965 · 0728965 · 34089 · 34227 · 134.48012 · 135.48012 · WC14089 · WC250410 · WC250430 · 91172683 · 91174801 · 91175624 · WC37976 · 5340256B60 · F129463 · WC129463. Manufacturer part number W37976.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this wheel cylinder do?
It's the rear-left drum-brake hydraulic actuator: brake-line pressure enters the bore and pushes the pistons and cups outward, forcing the brake shoes against the drum.
Which vehicles does it fit?
It's a direct-fit replacement for the 1998 Chevrolet Tracker, 1996-1997 Geo Tracker, 1991-1998 Suzuki Sidekick, and 1996-1998 Suzuki X-90 (all engines). See the Buyer's Guide tab to confirm.
Does it include a bleeder screw?
Yes, a bleeder screw is included. A bleeder screw cap is not included.
What are the bore size and inlet thread?
The bore inside diameter is 0.875 in., with an M10 x 1.0 (10 mm) inlet thread. The body is cast iron with EPDM rubber cups and boots.
Should I replace both sides at once?
Replacing the wheel cylinders on both sides as a matched pair is recommended for balanced rear braking. This listing is for one rear-left unit; order accordingly.
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