Dorman - First Stop Drum Brake Wheel Cylinder P/N:W4801
Keep hydraulic pressure moving to your drum brake shoes with the Dorman - First Stop Drum Brake Wheel Cylinder (W37729). A wheel cylinder converts brake-line fluid pressure into the outward force that pushes the shoes against the drum, so a leaking or seized unit can leave you with a soft pedal or uneven braking. This unit is cataloged for the rear right upper position and drops in as a direct replacement engineered to match the original's fit, function and performance on a wide range of 1984-1998 Ford medium- and heavy-duty trucks — including the F-600, F-700, F-800, B-600, B-700, C800, CF7000 and LN7000 (all engines). See the Buyer's Guide tab for the full application list.
The bleeder screw and bleeder screw cap are not included; consult the vehicle service information for the correct hardware and the proper bleeding procedure. Package contents: 1 drum brake wheel cylinder. Country of origin: Italy.
Interchange: 18E277 · W906598 · W-89020 · W89020 · 33899 · 134.79020 · WC250140 · 375-54121 · 37554121 · E4HZ2261A · E4HZ2261C · F2HZ2261A · WC37729 · F118105 · WC118105 ·
This part cross-references / interchanges with the following part numbers:
What does this drum brake wheel cylinder do?
It converts brake-line hydraulic pressure into the outward force that pushes the brake shoes against the drum. This unit is cataloged for the rear right upper position.
Which vehicles does it fit?
It's a direct replacement for many 1984-1998 Ford medium- and heavy-duty trucks, including the F-600, F-700, F-800, B-600, B-700 and C800 (all engines). Check the Buyer's Guide tab for the full list.
What is the bore and inlet thread size?
The cast-iron cylinder has a 1.75 in inside-diameter bore and an M10 x 1.0 (10 mm, 1.0 pitch) brake-component inlet thread.
Are the bleeder screw and cap included?
No. The bleeder screw and bleeder screw cap are not included. Consult the vehicle service information for the correct hardware and the proper brake-bleeding procedure.
What are signs this wheel cylinder may need replacing?
Signs it may need replacing include brake fluid leaking at the drum or backing plate, a soft or spongy pedal, and uneven braking. Diagnose the cause first, as other parts can cause these symptoms.
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.