GM Genuine Parts Brake Master Cylinder Reservoir Kit
OE
Pack of 1

GM Genuine Parts Brake Master Cylinder Reservoir Kit

GM Part #85586112

ACDelco Part #85586112

MSRP$72.66*

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE) ⚠ WARNING: Cancer and Reproductive Harm - www.

  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Pack of 1

About this product

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Mounting Hardware IncludedNo
Width2.59 in / 65.83 mm
Length6.78 in / 172.17 mm
ClassificationOE
Height3.21 in / 81.6 mm
Seals IncludedYes
Reservoir TypeSingle

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

The following should be conducted by a qualified technician:

  • Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
  • Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
  • Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
  • Check the thickness of your brake pads.
  • Inspection of the brake hoses for brittleness or cracking.
  • Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
  • Inspection of wheel bearings and grease seals.
  • Parking brake adjustments (as needed).

Brake cylinder signs of wear include:

  • Brake warning light is on.
  • Fluid spots beneath the car, indicating there may be a leak within the cylinder.
  • Difficulty stopping the vehicle.
  • A low or sinking brake pedal.

ModelBody StyleTrimYear(s)
Silverado EV2024, 2025, 2026