Keep firm hydraulic pressure flowing to your rear drum brakes with the Dorman – First Stop Drum Brake Wheel Cylinder W34474. It fits the rear left or rear right position and installs as a direct-fit replacement across classic GM and Cadillac applications, including the 1964-1971 Chevrolet K20 Pickup, 1968-1969 Chevrolet C20 Suburban, 1971-1972 GMC C35/C3500 Pickup, 1962-1968 Cadillac Commercial Chassis, and the 1975 Jeep J20 — see the Buyer's Guide tab for the full list of 29 applications (all engine options).
When you press the pedal, brake fluid enters through the 3/8-24 inlet and pushes the internal cups outward, forcing the brake shoes against the drum. Replacing a worn or leaking cylinder while servicing the drum brakes is a quick, dependable way to keep that hydraulic circuit sealed.
- Built to spec: engineered to match the fit, function, and performance of the original wheel cylinder on the listed vehicles, then manufactured and tested for quality assurance.
- Quality materials: high-quality EPDM rubber cups and boots for long-lasting performance.
- Professionally tested: the wheel cylinder bores are surface-tested to ensure an optimum sealing surface for the pressure cups.
- Ready to bleed: a bleeder screw is included; the bleeder screw cap is not included.
Cast-iron body with a 1.125 in inside diameter and a 3/8-24 inlet thread. Country of origin: China. Package contents: 1 drum brake wheel cylinder — sold individually; replacing both rear cylinders as a matched pair is recommended for balanced braking.
Interchange: 84-36016 · 8436016 · 84-50016 · 8450016 · W906161 · W-82016 · W82016 · 33255 · 134.62016 · 8124564 · WC252290 · 375-47018 · 37547018 · 18008608 · WC34474 · F34474 · Manufacturer part number W34474
This part cross-references / interchanges with the following part numbers:
84-36016, 84-50016, W906161, W-82016, 33255, 134.62016, 8124564, WC252290, 375-47018, 18008608, WC34474, F34474
