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ACDelco Professional 18M1884 Brake Master Cylinder Assembly

4.7 (9) Write Review
Free shipping on orders over $29.99

$53.34

$ 25 .99 $25.99

In Stock
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • Pressure tested to ensure safe and confident braking
  • Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
  • Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
  • Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • Pressure tested to ensure safe and confident braking
  • Cast iron and aluminum specifications provide no extra stress on the brake boosting mounting
  • Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
  • Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear


ACDelco Professional Brake Master Cylinders use both aluminum and iron castings, making them a high quality replacement for many vehicles on the road today. These master cylinders contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage. ACDelco Professional Brake Master Cylinders are ready to bench bleed and install right out of the box - no assembly required. These premium aftermarket replacement brake master cylinders are manufactured to meet your expectations for fit, form, and function.


Ashley Cribb
Reviewed in the United States on June 1, 2024
So far so good! Seems to well made and was a direct replacement for factory cylinder.
Jesse Hooli
Reviewed in the United States on April 3, 2024
This is the correct master for the jb7 brakes on an 89 suburban. When I purchased my truck it had the wrong master cylinder and I couldn't ever get the brakes to be firm, I realized it had the wrong master cylinder so I put this on and it works amazingly now. It's like a completely different truck now.
Old Bear
Reviewed in Canada on April 17, 2024
We have been chasing a brake issue on our 1981 C20 square body. This unit solved the issue. Bolted right in after the bench bleed was done. The brakes work again.
Travis Thompson
Reviewed in the United States on August 5, 2023
It fit right and works great
Preston🥶🥶
Reviewed in the United States on January 11, 2023
Works good the only thang is the bottom of it rust you might wing yo sand it and pant it
don
Reviewed in the United States on June 1, 2022
Fit perfect for 1987 GMC V2500 suburban
Garley
Reviewed in the United States on December 11, 2022
Fixed the problem and was the best price to be found.
Todd May
Reviewed in the United States on February 1, 2016
great
The good, the bad and the ugly
Reviewed in the United States on November 19, 2013
As always, AC Delco quality at reasonable prices. Always fits and works on GM products, never disappoints. Recommend to spend a few more dollars and get AC Delco for your GM, that way you don't have to worry about it.