Keep the brake shoes pressing firmly against the drum with the Dorman - First Stop W3406, a front Dorman drum brake wheel cylinder that turns hydraulic pressure from the brake lines into the force that pushes the shoes outward. It fits many vehicles, among them the 1947-1950 GMC FC280, 1947-1950 GMC FC281 and 1947-1950 GMC FC300. See the Buyer's Guide tab for the full list and engine details.
Dorman engineered this direct-replacement wheel cylinder to match the original unit's fit, function and performance on the listed applications. It is manufactured and tested for quality assurance.
- Ideal replacement: Designed as a direct match for the original front drum brake wheel cylinder on the listed applications.
- Cost-effective service: Replacing the cylinder while the drum brakes are already apart lets you service the hydraulic side of the brake at the same time.
- Quality materials: Built with high-quality EPDM rubber cups and boots.
- Professionally tested: The cylinder bores are surface-tested to provide an optimum sealing surface for the pressure cups.
Signs that a wheel cylinder may need replacing include brake fluid seeping inside the drum, brake shoes soaked with fluid, a soft brake pedal, or the vehicle pulling to one side under braking. Other brake components can cause these same symptoms, so diagnose the cause before you replace any parts.
Interchange: 101-1918 · 134.80021 · 135.80021 · 375-47118
1011918 · 13480021 · 13580021 · 37547118 · W906004 · WC252240 · 5300869 · 5450552 · 5451212 · WC3406 · F3406
This part cross-references / interchanges with the following part numbers:
W906004, 101-1918, 134.80021, 135.80021, WC252240, 375-47118, 5300869, 5450552, 5451212, WC3406, F3406
