Put your brake pedal's hydraulic pressure to work at the rear drum brakes with this Dorman drum brake wheel cylinder from the First Stop line, part number W37785. It fits many vehicles, among them the 1988-1999 Chevrolet C1500, 1988-1999 Chevrolet K1500 and 1995-2000 Chevrolet Tahoe. See the "Vehicles it fits" section for the full list and engine details.
This direct replacement is engineered to be a direct match for the original drum brake wheel cylinder on the listed vehicles, replicating its fit, function and performance. When the pedal is pressed, the cylinder's pistons push outward and force the brake shoes against the drum. Each unit is manufactured and tested for quality assurance.
- Ideal replacement: Designed as a direct match for the original rear drum brake wheel cylinder on the listed applications.
- Cost-effective fix: Replacing the wheel cylinder while the drum brakes are already apart is a quick, sensible step that helps maintain braking performance.
- Quality materials: Built with high-quality EPDM rubber cups and boots.
- Professionally tested: The cylinder bores are surface-tested for an optimum sealing surface for the pressure cups.
Signs a wheel cylinder may need replacing include brake fluid seeping onto the backing plate or inside the drum, a soft or spongy pedal, or a falling fluid level. Diagnose the cause before replacing parts, and consider replacing the wheel cylinders on both sides of the axle together for balanced braking.
Interchange: 172-1514 · 784-44018 · 84-44018 · 101-1644 · W-86018 · 134.66018 · 135.66018 · 375-47071
18E1234 · 18E296 · W906625 · 33961 · WC13961 · 18013956 · 18018788 · 18060167 · 19213347 · 116224 · WC370189 · F116224 · WC116224 · 1721514 · 78444018 · 8444018 · 1011644 · W86018 · 13466018 · 13566018 · 37547071
This part cross-references / interchanges with the following part numbers:
172-1514, 18E1234, 18E296, 784-44018, 84-44018, W906625, 101-1644, W-86018, 33961, 134.66018, 135.66018, WC13961, 375-47071, 18013956, 18018788, 18060167, 19213347, 116224, WC370189, F116224, WC116224
Frequently Asked Questions
What does a drum brake wheel cylinder do?
It turns hydraulic pressure from the brake pedal into mechanical force. Its pistons push outward and press the brake shoes against the drum. The W37785 is cataloged for the rear drum brakes.
Will this wheel cylinder fit my 1995-2000 Chevrolet Tahoe?
Yes. The W37785 is listed for the rear drum brakes of the 1995-2000 Chevrolet Tahoe. Check the "Vehicles it fits" section to confirm your exact vehicle.
What are the cups and boots made of?
The cups and boots are made of high-quality EPDM rubber. The cylinder bores are surface-tested for an optimum sealing surface for the pressure cups.
What are signs a wheel cylinder may need replacing?
Common signs include brake fluid on the backing plate or inside the drum, a soft or spongy pedal, and a dropping fluid level. Diagnose the cause first, because other parts can produce the same symptoms.
Do I need to bleed the brakes after installing it?
Yes. Replacing a wheel cylinder opens the hydraulic system, so the brakes must be bled afterward. Follow the vehicle service information for the correct procedure and torque specs.
