Dorman - First Stop Drum Brake Wheel Cylinder P/N:W610186

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$99.99
MPN: W610186
UPC: 885484159594
Item Package Quantity: 1
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Dorman - First Stop Drum Brake Wheel Cylinder P/N:W610186
Dorman - First Stop Drum Brake Wheel Cylinder P/N:W610186
$99.99

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.

  • Cast iron body: the cylinder bore is surface-tested for an optimum sealing surface for the pressure cups.
  • EPDM rubber cups and boots: made with high-quality EPDM rubber for long-lasting sealing performance.
  • 1.313 in bore: inside diameter of 1.313 in, with (2) M10 x 1.0 inlet threads.
  • Bleeder hardware not included: a bleeder screw and bleeder screw cap are not included; consult the vehicle service information for the correct bleeder hardware.

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):

  • 2004-2010 Chevrolet W4500 Tiltmaster [All]
  • 2004-2010 Chevrolet W5500 Tiltmaster [All]
  • 2004-2010 GMC W4500 Forward [All]
  • 2004-2010 GMC W5500 Forward [All]
  • 2004-2009 Isuzu NPR-HD [All]
  • 2004-2016 Isuzu NQR [All]
  • 2009 Chevrolet W5500HD Tiltmaster [All]
  • 2009 GMC W5500HD Forward [All]
  • 2012-2016 Isuzu NPR-HD [All]
  • 2016-2017 Chevrolet LCF 4500 [All]
  • 2017 Chevrolet LCF 4500XD [All]
  • 2017 Chevrolet LCF 5500HD [All]

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:

134.76044, 375-47097, 97358879, 8973588790, WC370236

Frequently Asked Questions

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.