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ACDelco Professional 18M2440 Brake Master Cylinder Assembly

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

$103.57

$ 47 .99 $47.99

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.


Fabian Penaloza
Reviewed in the United States on March 23, 2025
Buena y buen precio
juan
Reviewed in the United States on August 3, 2024
La instalaron hoy quedó bien, es de rosca milimétrica porque aquí las venden rosca gruesa y muchos tienen que colocar un adaptador
Dusty Pratt
Reviewed in the United States on July 7, 2024
Worked one day and then the next the pedal started going to the floor. It is leaking by the seals internally. I purposely bought ACDelco thinking it would outlast the vehicle since the first one went 260,000 miles.
Lucas L.
Reviewed in Canada on December 20, 2024
Worked perfectly for my 2007 escalade. Came packaged well.
Maribel
Reviewed in the United States on November 18, 2024
Bolted up fine. Works great. Supposed to be made in Mexico. Sticker says China. Why did I spend money on a Chinese Acdelco part? Might as well have gone to an auto parts store and but their Chinese parts with a lifetime warranty.2007 GMC Yukon SLT
Joshua
Reviewed in the United States on March 28, 2023
Just replaced my worn-out master cylinder on a 2008 Silverado with 295,000 miles. I was not looking forward to it, with nightmares of hidden issues or the pedal going to the floor after repairs. I was getting tired of having soft pedal travel. I removed the old unit after draining brake fluid, installed the new unit, flushed the brake system and bled. I now have tight pedal travel; brakes operate like a brand-new truck. Definitely worth the money and time. **Note, when reattaching the brake lines to the master cylinder, it helps to keep the mounting bolts loose until you have the lines threaded in and started, then slowly snug everything up. ** Would def recommend. Thanks!
Big Ty
Reviewed in the United States on April 25, 2023
ACdelco brings this well crafted and more affordable than your local auto part store brand to you.
N-1Texan User
Reviewed in the United States on August 4, 2022
Fits perfect, so far its been working great. Brakes good. No more brake fluid going into brake booster.That was my problem and this master cylinder solved it.
Shawn
Reviewed in the United States on December 24, 2022
Not much to say other than it fit the truck. Took about 5 min to get off 20 min to bleed it correctly and about 5 to put it on. I would recommend the cheap $10 bleed kit with it if your doing it yourself.