Dorman - First Stop Drum Brake Wheel Cylinder P/N:W4801
Keep your rear drum brakes pushing firm and even with the Dorman - First Stop Drum Brake Wheel Cylinder (MPN W7564) — the hydraulic actuator that converts brake-line pressure into the outward push that forces the brake shoes against the drum. It installs as a direct-fit rear right replacement, engineered to match the fit and function of the original wheel cylinder on the 1959 and 1968-1971 Dodge W300 Pickup, 1960-1967 Dodge W300 Series, 1960-1964 Pontiac Bonneville, Catalina and Star Chief, 1963-1964 Pontiac Grand Prix, 1965-1966 Cadillac Calais, 1967-1968 Cadillac DeVille and Fleetwood, 1968 International 1000C and 1100C, 1969-1970 International 1200D, 1971 Chevrolet G30 Van, 1971 GMC G35/G3500 Van, and 1976-1977 Jeep J20 (all engines) — see the Buyer's Guide tab for the full application list.
Specs: 1 in inside-diameter bore and a 7/16-24 UNS inlet thread (7/16 thread diameter). The package contains one drum brake wheel cylinder. Country of origin: China. Signs this part may need replacing include brake fluid leaking at the wheel or onto the backing plate, a soft or spongy pedal, and uneven drum braking; if a failed wheel cylinder is the cause, this unit replaces it — diagnose the cause before replacing.
Interchange: 18E3 · 84-38004 · 8438004 · W906028 · 101-1570 · 1011570 · W-84004 · W84004 · 33003 · 134.64004 · 1922190 · 2228350 · 8126962 · WC255920 · 375-52013 · 37552013 · 18008404 · 5450643 · 5456586 · 5465752 · 5473043 · 75081R91 · WC7564 · F9337 · WC9337. Manufacturer part number W7564.
This part cross-references / interchanges with the following part numbers:
What does this wheel cylinder do?
It's the hydraulic actuator in a drum brake: brake-line pressure pushes its internal pistons outward, forcing the brake shoes against the drum to slow the wheel.
Is a bleeder screw included?
Yes, this wheel cylinder includes a bleeder screw. A bleeder screw cap is not included.
What are the bore and thread sizes?
It has a 1 in inside-diameter bore and a 7/16-24 UNS inlet thread (7/16 thread diameter).
What position does W7564 fit?
The catalog lists it as the rear right drum brake wheel cylinder for the listed applications.
What are signs the wheel cylinder may need replacing?
Signs may include brake fluid leaking at the wheel or onto the backing plate, a soft or spongy pedal, and uneven drum braking. 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.