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ACDelco Professional 18M1755 Brake Master Cylinder Assembly

Free shipping on orders over $29.99

$57.88

$ 28 .99 $28.99

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.


Ralpher
August 27, 2025
Solidly built, beat Autozone/O'Reilly's price of $80+. Installed easily, works fine.
Evan
August 3, 2025
Exact replacement for my 98 f150 4.2l without cruise, so far works perfect and way less expensive than autozone or oreillys
Fortunate Son
June 16, 2025
DOES NOT FIT '98 F150 - This unit does not have one of two wiring connectors so I know it does match. Amazon should be more careful because if the mismatch was less obvious, it could have resulted in someone mounting the wrong part and creating a serious safety issue.UPDATE: This is for vehicles WITHOUT cruise control.Upgraded to 3 stars because I see that AFTER you filter by vehicle a statement appears that reads THIS FITS YOUR VEHICLE note: for vehicles without cruise control and frankly, I'm not sure the '98 Lariat was made without CC so it's still a bit misleading. Lesson learned - read the fine print.
Bbbobby
May 5, 2025
Bought for 97Ford F150 but they are AC Delco parts that are for GM models not Ford. But Amazon sent AC Delco parts that are a massive headache to deal with.AMAZON would not take responsibilityBUYER BEWARE
florencio
May 2, 2025
First thing I have ever tried to replace on a vehicle. Item was on time and easy to install and i am NOT the slightest mechanically gifted. Saw how to put it on on youtube. Went out and did it with a bleeding helper in about 20 mins.. Has worked well since.. GOOD purchase..
ventingisok
April 24, 2025
Looks like all parts are there. I am just keeping it in storage now since my master cylinder is still functioning. But my truck is approaching the years when parts and seals begin to fail. I may regret this buy since the warranty will be long over by the time I need this part, but the price for acdelco parts was tempting.
Travis
April 20, 2025
This master cylinder was an exact OEM replacement for my 1992 F-250 7.5L. It came with everything needed to install it including instructions for bench bleeding procedure. With a trusted brand like ACDelco, you cannot be the prices at Amazon compared to local auto part stores.
Customer
February 14, 2025
Let gravity bleak fluid thru holes then take old one off and slap new one on done