GM Genuine Parts Brake Master Cylinder
OE
Pack of 1

GM Genuine Parts Brake Master Cylinder

GM Part #19420965

ACDelco Part #19420965

MSRP$370.76*

ACDelco GM Original Equipment Brake Master Cylinder is a hydraulic pump mounted to the brake booster and contains a reservoir that holds brake fluid.

  • Pressure tested to ensure safe and confident braking
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • GM-recommended replacement part for your GM vehicle's original factory component

Pack of 1

About this product

ACDelco GM Original Equipment Brake Master Cylinder is a hydraulic pump mounted to the brake booster and contains a reservoir that holds brake fluid. This original equipment brake master cylinder 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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  • Pressure tested to ensure safe and confident braking
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • 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

Brake Booster IncludedNo
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Gasket Or Seal IncludedYes
Reservoir MaterialPlastic
Reservoir IncludedYes
Pushrod IncludedNo
Master Cylinder Cap IncludedYes
Bleeder Hoses IncludedNo
Port Quantity2
Master Cylinder Bore Diameter1.31 in / 33.37 mm
ClassificationOE
Mounting Hole Quantity2
Piston Quantity2
Sensor IncludedYes
Dust BootNo
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 15002009, 2010, 2011, 2012, 2013, 2014