Dorman - First Stop Drum Brake Wheel Cylinder P/N:W10588
Turn brake-line hydraulic pressure into the mechanical force that pushes your drum brake shoes with the Dorman - First Stop Drum Brake Wheel Cylinder W610186. Cataloged for the rear right, rearward position, it's engineered to drop in like the original wheel cylinder on a range of Chevrolet, GMC and Isuzu cab-forward trucks, and it's manufactured and tested for quality assurance.
A wheel cylinder uses hydraulic pressure from the brake line to press the shoes outward against the drum. If a failed or leaking wheel cylinder is the cause of a soft pedal, fluid seepage behind the drum, or reduced braking, this unit replaces it—diagnose the cause first. Replacing the cylinder while servicing drum brakes is a fast, cost-effective way to help maintain brake performance.
Fitment (engine code shown verbatim):
See the Buyer's Guide tab for the complete list.
Interchange: 134.76044 · 375-47097 · 37547097 · 97358879 · 8973588790 · WC370236 · Manufacturer part number W610186
This part cross-references / interchanges with the following part numbers:
What does this wheel cylinder do?
It converts hydraulic pressure from the brake line into mechanical force, pushing the drum brake shoes outward against the drum to slow the wheel.
What position and bore size does it fit?
The catalog lists it for the rear right, rearward position. Its bore inside diameter is 1.313 in, with (2) M10 x 1.0 inlet threads.
Does it include a bleeder screw?
No. A bleeder screw and bleeder screw cap are not included. Consult the vehicle service information for the correct bleeder hardware.
Which vehicles does it fit?
It's a direct replacement for a range of Chevrolet LCF, W-series Tiltmaster, GMC W-series Forward, and Isuzu NPR-HD/NQR trucks. See the Buyer's Guide tab for the full list.
What are signs this part may need replacing?
Signs may include brake fluid leaking behind the drum, a soft or spongy pedal, or reduced braking. If a failed wheel cylinder is the cause, this replaces it; diagnose first.
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.