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GM Genuine Parts Brake Master Cylinder Reservoir
OE

GM Genuine Parts Brake Master Cylinder Reservoir

GM Part #84873081

ACDelco Part #84873081

MSRP$70.04*

ACDelco GM Original Equipment Brake Master Cylinder Reservoir holds the supply of brake fluid for the master cylinder.

  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured with GM Original Equipment specification for fit, form, and function

About this product

ACDelco GM Original Equipment Brake Master Cylinder Reservoir holds the supply of brake fluid for the master cylinder. This original equipment brake master cylinder reservoir has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

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  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured with GM Original Equipment specification for fit, form, and function

MaterialPlastic
Mounting Hardware IncludedNo
Width7.38in
Length9.62in
Height5.38in
ClassificationOE
Reservoir TypeDual

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)
Express 25002019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Express 35002019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Express 45002019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Silverado 2500 HD2015, 2016, 2017, 2018, 2019
Silverado 3500 HD2015, 2016, 2017, 2018, 2019