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Please, add your first item to the wishlist

Select vehicle to confirm fitment

Brake Master Cylinder

PART#: 18M2667
ACDelco

$107.95

In stock

Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
2017BuickRegalGS2.0L4GAS
2017BuickRegalBase2.4L4GAS
2017BuickRegalBase2.4L4FLEX
2017BuickRegalBase2.0L4GAS
2017BuickRegalSport Touring2.0L4GAS
2017BuickRegalPremium2.0L4GAS
2017BuickVeranoBase2.4L4FLEX
2017BuickVeranoLeather2.4L4FLEX
2017BuickVeranoBase2.4L4GAS
2017BuickVeranoSport Touring2.4L4GAS
2017BuickVeranoSport Touring2.4L4FLEX
2017BuickVeranoLeather2.4L4GAS
2016BuickLaCrosseLeather3.6V6FLEX
2016BuickLaCrosseBase2.4L4MILD HYBRID EV-GAS (MHEV)
2016BuickLaCrosseSport Touring3.6V6GAS
2016BuickLaCrosseSport Touring3.6V6FLEX
2016BuickLaCrosseBase3.6V6GAS
2016BuickLaCrossePremium3.6V6FLEX
2016BuickLaCrosseLeather2.4L4MILD HYBRID EV-GAS (MHEV)
2016BuickLaCrossePremium3.6V6GAS
2016BuickLaCrosseBase3.6V6FLEX
2016BuickLaCrosseLeather3.6V6GAS
2016BuickVeranoSport Touring2.4L4FLEX
2016BuickVeranoConvenience2.4L4FLEX
2016BuickVeranoLeather2.4L4FLEX
2016BuickVeranoSport Touring2.4L4GAS
2016BuickVeranoBase2.4L4GAS
2016BuickVeranoPremium2.0L4GAS
2016BuickVeranoBase2.4L4FLEX
2016BuickVeranoConvenience2.4L4GAS
2016BuickVeranoLeather2.4L4GAS
2016BuickRegalBase2.0L4GAS
2016BuickRegalGS2.0L4GAS
2016BuickRegalPremium2.4L4MILD HYBRID EV-GAS (MHEV)
2016BuickRegalBase2.4L4GAS
2016BuickRegalPremium2.0L4GAS
2016BuickRegalBase2.4L4FLEX
2016BuickRegalSport Touring2.0L4GAS
2016BuickCascadaPremium1.6L4GAS
2016BuickCascadaBase1.6L4GAS
2016ChevroletMalibu LimitedLTZ2.5L4GAS
2016ChevroletMalibu LimitedLS2.5L4GAS
2016ChevroletMalibu LimitedLT2.5L4GAS
2016ChevroletCruze LimitedL1.8L4GAS
2016ChevroletCruze LimitedLT1.4L4GAS
2016ChevroletCruze LimitedLS1.8L4GAS
2016ChevroletCruze LimitedLT1.8L4GAS
2016ChevroletCruze LimitedEco1.4L4GAS
2016ChevroletCruze LimitedLS1.8L4FLEX
2016ChevroletCruze LimitedLTZ1.4L4GAS
2016ChevroletCruze LimitedL1.8L4FLEX
2016ChevroletCruzeLS1.4L4GAS
2016ChevroletCruzeL1.4L4GAS
2016ChevroletCruzeLT1.4L4GAS
2016ChevroletCruzePremier1.4L4GAS
2015BuickRegalBase2.4L4FLEX
2015BuickRegalBase2.0L4GAS
2015BuickRegalPremium2.0L4GAS
2015BuickRegalPremium2.4L4MILD HYBRID EV-GAS (MHEV)
2015BuickRegalGS2.0L4GAS
2015BuickLaCrosseBase3.6V6FLEX
2015BuickLaCrosseLeather2.4L4MILD HYBRID EV-GAS (MHEV)
2015BuickLaCrossePremium3.6V6FLEX
2015BuickLaCrosseLeather3.6V6FLEX
2015BuickLaCrosseBase2.4L4MILD HYBRID EV-GAS (MHEV)
2015BuickVeranoLeather2.4L4FLEX
2015BuickVeranoBase2.4L4FLEX
2015BuickVeranoConvenience2.4L4FLEX
2015BuickVeranoPremium2.0L4GAS
2015ChevroletCruzeLS1.8L4GAS
2015ChevroletCruzeDiesel2.0L4DIESEL
2015ChevroletCruzeEco1.4L4GAS
2015ChevroletCruzeLS1.8L4FLEX
2015ChevroletCruzeLT1.4L4GAS
2015ChevroletCruzeL1.8L4GAS
2015ChevroletCruzeLTZ1.4L4GAS
2015ChevroletCruzeL1.8L4FLEX
2015ChevroletMalibuLTZ2.0L4GAS
2015ChevroletMalibuLTZ2.5L4GAS
2015ChevroletMalibuLT2.0L4GAS
2015ChevroletMalibuLS2.5L4GAS
2015ChevroletMalibuLT2.5L4GAS
2014BuickLaCrosseBase3.6V6FLEX
2014BuickLaCrosseLeather2.4L4MILD HYBRID EV-GAS (MHEV)
2014BuickLaCrosseBase2.4L4MILD HYBRID EV-GAS (MHEV)
2014BuickLaCrossePremium3.6V6FLEX
2014BuickLaCrosseLeather3.6V6FLEX
2014BuickRegalPremium2.4L4MILD HYBRID EV-GAS (MHEV)
2014BuickRegalBase2.0L4GAS
2014BuickRegalPremium2.0L4GAS
2014BuickRegalGS2.0L4GAS
2014BuickRegalBase2.4L4MILD HYBRID EV-GAS (MHEV)
2014BuickVeranoPremium2.0L4GAS
2014BuickVeranoBase2.4L4FLEX
2014BuickVeranoLeather2.4L4FLEX
2014BuickVeranoConvenience2.4L4FLEX
2014ChevroletCruzeLTZ1.4L4GAS
2014ChevroletCruzeDiesel2.0L4DIESEL
2014ChevroletCruzeEco1.4L4GAS
2014ChevroletCruzeLS1.8L4FLEX
2014ChevroletCruzeLS1.8L4GAS
2014ChevroletCruzeLT1.4L4GAS
2014ChevroletMalibuLS2.5L4GAS
2014ChevroletMalibuLT2.5L4GAS
2014ChevroletMalibuLTZ2.0L4GAS
2014ChevroletMalibuLT2.0L4GAS
2014ChevroletMalibuEco2.4L4MILD HYBRID EV-GAS (MHEV)
2014ChevroletMalibuLTZ2.5L4GAS
2013BuickVeranoTurbo2.0L4GAS
2013BuickVeranoBase2.4L4FLEX
2013BuickVeranoLeather2.4L4FLEX
2013BuickVeranoConvenience2.4L4FLEX
2013BuickVeranoPremium2.0L4GAS
2013BuickLaCrosseBase3.6V6FLEX
2013BuickLaCrossePremium3.6V6FLEX
2013BuickLaCrosseLeather2.4L4MILD HYBRID EV-GAS (MHEV)
2013BuickLaCrosseTouring3.6V6FLEX
2013BuickLaCrosseLeather3.6V6FLEX
2013BuickLaCrosseBase2.4L4MILD HYBRID EV-GAS (MHEV)
2013BuickRegalPremium2.4L4MILD HYBRID EV-GAS (MHEV)
2013BuickRegalGS2.0L4FLEX
2013BuickRegalBase2.4L4MILD HYBRID EV-GAS (MHEV)
2013BuickRegalPremium2.0L4FLEX
2013CadillacXTSBase3.6V6GASExcept Commercial Chassis
2013CadillacXTSPlatinum3.6V6GASExcept Commercial Chassis
2013CadillacXTSLuxury3.6V6GASExcept Commercial Chassis
2013CadillacXTSPremium3.6V6GASExcept Commercial Chassis
2013CadillacXTSLivery3.6V6GASExcept Commercial Chassis
2013ChevroletMalibuLTZ2.5L4GAS
2013ChevroletMalibuLT2.5L4GAS
2013ChevroletMalibuLS2.5L4GAS
2013ChevroletMalibuEco2.4L4MILD HYBRID EV-GAS (MHEV)
2013ChevroletMalibuLTZ2.0L4GAS
2013ChevroletMalibuLT2.0L4GAS
2013ChevroletCruzeLS1.8L4GAS
2013ChevroletCruzeEco1.4L4GAS
2013ChevroletCruzeLTZ1.4L4GAS
2013ChevroletCruzeLT1.4L4GAS
2013ChevroletCruzeLS1.8L4FLEX
2012BuickLaCrosseBase3.6V6FLEX
2012BuickLaCrosseBase2.4L4MILD HYBRID EV-GAS (MHEV)
2012BuickLaCrossePremium2.4L4MILD HYBRID EV-GAS (MHEV)
2012BuickLaCrosseLeather3.6V6FLEX
2012BuickLaCrosseTouring3.6V6FLEX
2012BuickLaCrosseConvenience2.4L4MILD HYBRID EV-GAS (MHEV)
2012BuickLaCrossePremium3.6V6FLEX
2012BuickLaCrosseConvenience3.6V6FLEX
2012BuickLaCrosseLeather2.4L4MILD HYBRID EV-GAS (MHEV)
2012BuickRegalPremium2.4L4MILD HYBRID EV-GAS (MHEV)
2012BuickRegalPremium2.0L4FLEX
2012BuickRegalBase2.4L4FLEX
2012BuickRegalBase2.4L4MILD HYBRID EV-GAS (MHEV)
2012BuickRegalGS2.0L4FLEX
2012BuickVeranoBase2.4L4FLEX
2012BuickVeranoLeather2.4L4FLEX
2012BuickVeranoConvenience2.4L4FLEX
2012ChevroletCruzeLT1.4L4GAS
2012ChevroletCruzeEco1.4L4GAS
2012ChevroletCruzeLS1.8L4FLEX
2012ChevroletCruzeLTZ1.4L4GAS
2011BuickRegalCXL2.0L4FLEX
2011BuickRegalCXL2.4L4GAS
2011BuickLaCrosseCXS3.6V6GAS
2011BuickLaCrosseCXL2.4L4GAS
2011BuickLaCrosseCX2.4L4GAS
2011BuickLaCrosseCXL3.6V6GAS
2011BuickLaCrosseCX3.6V6GAS
2011ChevroletCruzeLS1.8L4FLEX
2011ChevroletCruzeLTZ1.4L4GAS
2011ChevroletCruzeLT1.4L4GAS
2011ChevroletCruzeEco1.4L4GAS
2011Saab9-5Aero2.8V6GAS
2011Saab9-5Turbo62.8V6GAS
2011Saab9-5Turbo42.0L4GAS
2010BuickLaCrosseCX2.4L4GAS
2010BuickLaCrosseCXL3.0V6GAS
2010BuickLaCrosseCX3.0V6GAS
2010BuickLaCrosseCXS3.6V6GAS
2010Saab9-5Aero2.8V6GAS
About ACDelco

When it comes to top-notch auto parts, one brand that stands tall is ACDelco. Popular for its commitment to quality and innovation, ACDelco has been a trusted name in the automotive industry. At Newparts.com, we're proud to offer a wide selection of ACDelco auto parts, including ACDelco spark plugs, ACDelco alternators, and ACDelco air filters, and other ACDelco parts, all at discounted prices.

ACDelco spark plugs are engineered to deliver exceptional performance and reliability, ensuring optimal engine operation and fuel efficiency. Whether you're cruising down the highway or navigating city streets, you can trust ACDelco spark plugs to keep your engine firing on all cylinders.

When it comes to power generation, ACDelco alternators are second to none. Designed to withstand the challenges of daily driving, ACDelco alternators deliver consistent power output to keep your vehicle's electrical systems running smoothly. With ACDelco alternators from Newparts.com, you can count on reliable performance mile after mile.

In addition to spark plugs and alternators, we also offer a range of ACDelco air filters to help keep your engine breathing clean, fresh air. ACDelco air filters are designed to trap dirt, dust, and other contaminants, preventing them from entering your engine and causing damage. With a high-quality ACDelco air filter from Newparts.com, you can enjoy improved engine performance and extended engine life.

At Newparts.com, we understand that getting the right parts quickly is essential. That's why we offer fast shipping on all ACDelco auto parts, so you can get back on the road with confidence. Plus, with our discounted prices, you can save big on the parts you need to keep your vehicle running smoothly. In case you want to purchase parts by phone, feel free to call us at 855-505-2886 and our customer service team will help you out. 

Whether you're in need of spark plugs, alternators, air filters, or any other ACDelco auto parts, Newparts.com has you covered. Shop our selection today and experience the quality and reliability of ACDelco for yourself.

Specifications
Bleeder Hoses IncludedYes
Bore Size1.000
Brake Booster IncludedNo
FAQ - Answer 1No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
FAQ - Answer 2Yes, ACDelco also offers GM OE brake cylinders.
FAQ - Answer 3Yes, ACDelco Professional Brake Cylinders come with a 12 month / unlimited mile warranty.
FAQ - Question 1Do I have to replace all my brake parts when replacing my brake cylinder?
FAQ - Question 2Does ACDelco offer other grades of brake cylinders?
FAQ - Question 3Are these brake parts durable?
Features & Benefits - Bullet 1Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
Features & Benefits - Bullet 2Pressure tested to ensure safe and confident braking
Features & Benefits - Bullet 3Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
Features & Benefits - Bullet 4Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
Features & Benefits - Bullet 5Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
Good Maintenance Practices - Section 1 - Bullet 1Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Good Maintenance Practices - Section 1 - Bullet 2Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - Section 1 - Bullet 3Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
Good Maintenance Practices - Section 1 - Bullet 4Check the thickness of your brake pads.
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems:
Good Maintenance Practices - Section 2 - Bullet 1Inspection of the brake hoses for brittleness or cracking.
Good Maintenance Practices - Section 2 - Bullet 2Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - Section 2 - Bullet 3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4Parking brake adjustments (as needed).
Good Maintenance Practices - Section 2 - HeaderThe following should be conducted by a qualified technician:
Height (in)4.2
Length (in)8
Master Cylinder Bore Diameter1
Master Cylinder Bore Diameter25.4
Master Cylinder Cap IncludedNo
Master Cylinder MaterialAluminum
Mounting Bracket IncludedNo
Mounting Hole Diameter0.768
Mounting Hole Quantity2
Port Quantity2
Primary Outlet Thread Diameter0.472
Primary Outlet Thread Diameter12
Product DescriptionACDelco 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. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov
Programming RequiredNo
Push Rod IncludedNo
Reservoir IncludedNo
Secondary Outlet Thread Diameter0.472
Secondary Outlet Thread Diameter12
Signs of Wear & Troubleshooting - Section 1 - Bullet 1Brake warning light is on.
Signs of Wear & Troubleshooting - Section 1 - Bullet 2Fluid spots beneath the car, indicating there may be a leak within the cylinder.
Signs of Wear & Troubleshooting - Section 1 - Bullet 3Difficulty stopping the vehicle.
Signs of Wear & Troubleshooting - Section 1 - Bullet 4A low or sinking brake pedal.
Signs of Wear & Troubleshooting - Section 1 - HeaderBrake cylinder signs of wear include:
Weight (lb)1.26
Width (in)6.7
Warranty
We offer a 2-year warranty on all parts that we sell. If the part fails within 2 years of purchase, please contact us for instructions to replace it. The warranty does not cover normal wear and tear or improper installation. On many parts, we also offer Extend product protection, which is a way to add up to 3 additional years for 5 total years of worry free coverage. Select your preferred term length and you're covered!
Delivery & Returns

Delivery Info

Newparts.com is your go to store for all parts and accessories at the best price and delivered quickly. Every order we ship receives a tracking number so that you can watch it all the way until it reaches your door. We only ship using the major shipping carriers like FedEx, UPS and USPS to ensure quick and safe delivery of your new car parts order.

Returns Info

Newparts.com offers a thirty (30) day return for refund for all items purchased through Newparts.com. To qualify for return and refund, all items must be new and in their original manufacturers box. To initiate a return, please contact our customer service. This information is only a summary. Complete shipping and return policy information can be found in our web site policies.

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