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ACDelco Professional 18M1159 Brake Master Cylinder Assembly

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

$117.99

$ 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.


Tracy
Reviewed in the United States on January 8, 2025
Just like the original one.
Grant
Reviewed in the United States on September 25, 2024
Upgraded my 98 GMC K1500 spongy brakes with this product. One bushing to buy and it’s an easy swap. Just make sure you bleed the air from your abs system completely not just the calipers and wheel cylinders.
Dave Ligato
Reviewed in the United States on May 26, 2024
wow this was a upgrade for my truck.
Dieselman
Reviewed in the United States on March 22, 2024
Master cylinder appeared to be correct but after installation it would not allow breaks to fully release. Too often after market parts faulty these days you cannot assume because it's new it's good.
Dennis P. Calderone II
Reviewed in the United States on November 21, 2024
original parts quality
Tahoe2002
Reviewed in the United States on October 22, 2024
Nothing more to be said, it works.
Shawn Nelson
Reviewed in the United States on November 12, 2022
Install this on my OBS 1995 Chevy Silverado with no problem great upgrade breaking is way better! If you know you know!
Chris L
Reviewed in Canada on October 17, 2021
Mine didn’t come with the bleeder hoses like it should’ve. One star until I get them.
Green Reviews
Reviewed in the United States on July 27, 2014
Item as described, shipped quickly, good quality part. Fitment perfect for a 2002 k1500, bolted right on. This comes with a bleeder kit (nylon stopper bolts) and worked very well for bench bleeding it.This is the proper fitment for the OBS K1500 Chevy truck guys (GMT400) looking to upgrade their JB6 systems. The Master cylinder will have some excess room when fitting it into the hole in the booster- this isn't an issue. Really good pedal feel!