Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37786
Keep your rear drum brakes applying even hydraulic force with the Dorman - First Stop Drum Brake Wheel Cylinder W37222. This cast-iron wheel cylinder drops in at the rear (upper and lower) positions on a range of medium-duty trucks, including the 1980-1983 Ford C800, C8000, L800 and LN800, the 1981 Ford L900, the 1981-1983 Ford LN8000, and the 1980-1982 International CARGOSTAR and S1925, the 1981-1982 S1954 and the 1981 S1955 — see the Buyer's Guide tab for the full list and per-vehicle quantities.
Inside the cylinder, hydraulic pressure from the master cylinder pushes the internal cups and pistons outward, forcing the brake shoes against the drum. Signs the original may need replacing include fluid seepage at the wheel cylinder, a soft or sinking pedal, or uneven drum braking — diagnose the cause before replacing. The bore measures 1.875 in inside diameter with a 7/16-20 inlet thread, and it was engineered to match the original wheel cylinder's fit, function and performance on the listed vehicles. Country of origin: China. This listing includes one wheel cylinder; Ford applications use two per vehicle while the International trucks use one.
Interchange: 18E77 · W906322 · W-92018 · W92018 · 33584 · 134.82018 · WC13584 · 375-54154 · 37554154 · C8TZ2262E · 260551C91 · WC37222 · F26181 · WC26181
Manufacturer part number W37222
This part cross-references / interchanges with the following part numbers:
Where does this wheel cylinder mount?
It fits the rear drum brakes in the upper and lower positions on the listed applications. Check the Buyer's Guide tab to confirm fitment for your vehicle.
Does it include a bleeder screw?
Yes, a bleeder screw is included. A bleeder screw cap is not included.
How many do I need?
The package includes one wheel cylinder. Ford applications use two per vehicle, while the International trucks use one — see the Buyer's Guide for your vehicle.
What are the key specifications?
It has a cast-iron body with a 1.875 in inside diameter bore and a 7/16-20 inlet thread, and is made with EPDM rubber cups and boots.
How do I know if my wheel cylinder is failing?
Brake fluid seepage at the wheel cylinder, a soft or sinking pedal, or uneven drum braking can be signs. Diagnose the cause before replacing.
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.