Dorman - First Stop Drum Brake Wheel Cylinder P/N:W34178
Give the rear drum brakes on your vintage Jeep a fresh hydraulic heart with the Dorman drum brake wheel cylinder, part number W7568 from the Dorman - First Stop line. It is a direct-fit replacement on the rear drum brakes of the 1946-1953 Jeep Willys. It turns hydraulic pressure from the master cylinder into the outward push that presses the brake shoes against the drum.
Signs a wheel cylinder may need replacing include brake fluid seeping behind the drum, fluid-soaked brake shoes, a soft or sinking pedal, and the vehicle pulling to one side under braking. These symptoms can have other sources, so diagnose the cause before replacing. Replacing both rear wheel cylinders together is recommended for even braking. Bleed the brake system after installation as directed by the vehicle service information. See the "Vehicles it fits" section for engine details.
Interchange: 134.58007 · 375-42004
13458007 · 37542004 · W906029 · 8126797 · A6110 · WC255930 · 5473023 · WC7568 · F7568
This part cross-references / interchanges with the following part numbers:
What does a drum brake wheel cylinder do?
It converts hydraulic pressure from the master cylinder into outward force that pushes the brake shoes against the drum. Dorman W7568 does this job on the rear drum brakes of the listed applications.
Which vehicle does the Dorman W7568 fit?
It is a direct-fit rear wheel cylinder for the 1946-1953 Jeep Willys. See the "Vehicles it fits" section for engine details.
What are the cups and boots made of?
Dorman builds this wheel cylinder with high-quality EPDM rubber cups and boots. Its bores are surface-tested to give the pressure cups an optimum sealing surface.
What are signs a wheel cylinder may need replacing?
Common signs include fluid leaking behind the drum, brake-fluid-soaked shoes, a soft pedal, or pulling while braking. Inspect the brakes to confirm the cause before replacing.
Should I replace both rear wheel cylinders at once?
Replacing both sides together is recommended for even braking, ideally while the drums are already apart for shoe service. Bleed the brakes after installation per the vehicle service information.
No reviews yet — be the first to review this product.
Write a Review
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.