Need expert help? Reach out to us via live chat MON-SAT, 9AM to 5PM ET, for support. Our specialists are ready to assist you!
Login My Account Icon | Sign Up
0

Please, add your first item to the wishlist

Need expert help? Reach out to us via live chat MON-SAT, 9AM to 5PM ET, for support. Our specialists are ready to assist you!

0

Please, add your first item to the wishlist

Select vehicle to confirm fitment

Brake Master Cylinder

PART#: 18M932
ACDelco
Add to My Projects
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder
Brake Master Cylinder

$48.95

Select vehicle to confirm fitment

In stock

Need help? Talk to us, or chat with an expert!
Add to My Projects
Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
1971JeepCJ5Base2.2L4GASSingle Reservoir
1971JeepCJ5Base3.7V6GASSingle Reservoir
1971JeepCJ5Base4.2L6GASSingle Reservoir
1971JeepCJ5Base5.0V8GASSingle Reservoir
1971JeepCJ6Base3.7V6GASSingle Reservoir
1971JeepCJ6Base4.2L6GASSingle Reservoir
1971JeepCJ6Base2.2L4GASSingle Reservoir
1971JeepCJ6Base5.0V8GASSingle Reservoir
1971JeepDJ5Base3.7V6GASSingle Reservoir
1971JeepDJ5Base2.2L4GASSingle Reservoir
1971AM GeneralDJ5Base2.2L4GASSingle Reservoir
1970JeepCJ5Base3.7V6GASSingle Reservoir
1970JeepCJ5Base2.2L4GASSingle Reservoir
1970JeepDJ5Base2.2L4GASSingle Reservoir
1970JeepDJ5Base3.7V6GASSingle Reservoir
1970AM GeneralDJ5Base2.2L4GASSingle Reservoir
1969JeepCJ5Base2.2L4GASCJ5; Single Reservoir
1969JeepCJ5Base3.7V6GASCJ5; Single Reservoir
1969JeepDJ5Base3.7V6GASSingle Reservoir
1969JeepDJ5Base2.2L4GASSingle Reservoir
1969JeepUniversal TruckBase3.7V6GASCJ5; Single Reservoir
1969JeepUniversal TruckBase2.2L4GASCJ5; Single Reservoir
1969AM GeneralDJ5Base2.2L4GASSingle Reservoir
1968JeepCJ5Base3.2L4DIESELSingle Reservoir
1968JeepCJ5Base3.7V6GASSingle Reservoir
1968JeepCJ5Base2.2L4GASSingle Reservoir
1968JeepCJ6Base2.2L4GASSingle Reservoir
1968JeepCJ6Base3.7V6GASSingle Reservoir
1968JeepCJ6Base3.2L4DIESELSingle Reservoir
1968JeepDJ5Base3.7V6GASSingle Reservoir
1968JeepDJ5Base2.2L4GASSingle Reservoir
1968JeepDJ5Base3.2L4DIESELSingle Reservoir
1968JeepDJ6Base3.7V6GASSingle Reservoir
1968JeepDJ6Base2.2L4GASSingle Reservoir
1968JeepDJ6Base3.2L4DIESELSingle Reservoir
1968JeepCJ5ABase2.2L4GAS
1968JeepCJ5ABase3.7V6GAS
1968JeepCJ6ABase2.2L4GAS
1968JeepCJ6ABase3.7V6GAS
1968JeepUniversal TruckBase3.2L4DIESELCJ5; Single Reservoir
1968JeepUniversal TruckBase2.2L4GASCJ5; Single Reservoir
1968JeepUniversal TruckBase3.7V6GASCJ5; Single Reservoir
1967JeepCJ5Base3.7V6GASCJ5; Single Reservoir
1967JeepCJ5Base2.2L4GASCJ5; Single Reservoir
1967JeepCJ6Base3.7V6GASSingle Reservoir
1967JeepCJ6Base2.2L4GASSingle Reservoir
1967JeepDJ5Base3.7V6GASSingle Reservoir
1967JeepDJ5Base3.2L4DIESELSingle Reservoir
1967JeepDJ5Base2.2L4GASSingle Reservoir
1967JeepDJ6Base2.2L4GASSingle Reservoir
1967JeepDJ6Base3.7V6GASSingle Reservoir
1967JeepDJ6Base3.2L4DIESELSingle Reservoir
1967JeepUniversalBase2.2L4GASSingle Reservoir
1967JeepUniversalBase3.7V6GASSingle Reservoir
1967JeepCJ5ABase2.2L4GAS
1967JeepCJ5ABase3.7V6GAS
1967JeepCJ6ABase2.2L4GAS
1967JeepCJ6ABase3.7V6GAS
1967JeepUniversal TruckBase3.2L4DIESELCJ5; Single Reservoir
1967JeepUniversal TruckBase2.2L4GASCJ5; Single Reservoir
1967JeepUniversal TruckBase3.7V6GASCJ5; Single Reservoir
1966JeepCJ3Base3.7V6GAS
1966JeepCJ3Base2.2L4GAS
1966JeepCJ5Base2.2L4GASCJ5; Single Reservoir
1966JeepCJ5Base3.7V6GASCJ5; Single Reservoir
1966JeepCJ6Base2.2L4GASSingle Reservoir
1966JeepCJ6Base3.7V6GASSingle Reservoir
1966JeepDJ5Base3.2L4DIESELSingle Reservoir
1966JeepDJ5Base2.2L4GASSingle Reservoir
1966JeepDJ5Base3.7V6GASSingle Reservoir
1966JeepDJ6Base3.7V6GASSingle Reservoir
1966JeepDJ6Base2.2L4GASSingle Reservoir
1966JeepDJ6Base3.2L4DIESELSingle Reservoir
1966JeepUniversalBase3.7V6GASCJ6; Single Reservoir
1966JeepUniversalBase2.2L4GASCJ6; Single Reservoir
1966JeepCJ5ABase2.2L4GAS
1966JeepCJ5ABase3.7V6GAS
1966JeepCJ6ABase2.2L4GAS
1966JeepCJ6ABase3.7V6GAS
1966JeepUniversal TruckBase2.2L4GASCJ5; Single Reservoir
1966JeepUniversal TruckBase3.2L4DIESELCJ5; Single Reservoir
1966JeepUniversal TruckBase3.7V6GASCJ5; Single Reservoir
1965JeepUniversalBase2.2L4GASCJ6; Single Reservoir
1965JeepCJ3Base2.2L4GAS
1965JeepCJ5Base2.2L4GASCJ5; Single Reservoir
1965JeepCJ6Base2.2L4GASCJ6; Single Reservoir
1965JeepDJ6Base2.2L4GASSingle Reservoir
1965JeepDJ6Base3.2L4DIESELSingle Reservoir
1964JeepUniversalBase2.2L4GASCJ6; Single Reservoir
1964JeepCJ3Base2.2L4GASCJ3B
1964JeepCJ5Base2.2L4GASCJ5; Single Reservoir
1964JeepCJ6Base2.2L4GASCJ6; Single Reservoir
1964JeepUniversal TruckBase3.2L4DIESELCJ3B
1964JeepUniversal TruckBase2.2L4GASCJ3B
1963JeepUniversalBase2.2L4GASCJ6; Single Reservoir
1963JeepCJ3Base2.2L4GASCJ3B
1963JeepCJ5Base2.2L4GASCJ5; Single Reservoir
1963JeepCJ6Base2.2L4GASCJ6; Single Reservoir
1963JeepUniversal TruckBase2.2L4GASCJ3B
1963JeepUniversal TruckBase3.2L4DIESELCJ3B
1963StudebakerHawkBase2.8L6GAS
1963StudebakerHawkBase4.2V8GAS
1963StudebakerHawkBase4.7V8GAS
1963StudebakerHawkBase5.0V8GAS
1962StudebakerChamp7E74.2V8GAS1" Bore Diameter
1962StudebakerChamp7E74.8V8GAS1" Bore Diameter
1962Studebaker7E7Base4.7V8GAS1" Bore Diameter
1962Studebaker7E7Base4.2V8GAS1" Bore Diameter
1962StudebakerHawkBase2.8L6GAS
1962StudebakerHawkBase4.7V8GAS
1962StudebakerHawkBase4.2V8GAS
1961JeepDJ3Base2.2L4GAS
1961StudebakerChamp6E74.2V8GAS1" Bore Diameter
1961StudebakerChamp6E74.8V8GAS1" Bore Diameter
1961Studebaker6E7Base4.7V8GAS1" Bore Diameter
1961Studebaker6E7Base4.2V8GAS1" Bore Diameter
1961Studebaker6E7DBase4.2V8GAS1" Bore Diameter
1961Studebaker6E7DBase4.7V8GAS1" Bore Diameter
1961StudebakerHawkBase4.2V8GAS
1961StudebakerHawkBase2.8L6GAS
1961StudebakerHawkBase4.7V8GAS
1960American MotorsAmericanSuper3.2L6GAS
1960American MotorsAmericanCustom3.2L6GAS
1960American MotorsAmericanDeluxe3.2L6GAS
1960StudebakerLarkBase2.8L6GAS
1960StudebakerLarkBase4.2V8GAS
1960StudebakerLarkBase4.7V8GAS
1960StudebakerChamp5E74.2V8GAS1" Bore Diameter
1960StudebakerChamp5E74.8V8GAS1" Bore Diameter
1960StudebakerChamp5E52.8L6GAS1" Bore Diameter
1960Studebaker5E6Base4.0L6GAS1" Bore Diameter
1960Studebaker5E7Base4.2V8GAS1" Bore Diameter
1960Studebaker5E7Base4.7V8GAS1" Bore Diameter
1960Studebaker5E7DBase4.2V8GAS1" Bore Diameter
1960Studebaker5E7DBase4.7V8GAS1" Bore Diameter
1960StudebakerHawkBase4.2V8GAS
1960StudebakerHawkBase4.7V8GAS
1960StudebakerHawkBase2.8L6GAS
1959American MotorsAmericanPanel Delivery3.2L6GAS
1959American MotorsAmericanDeluxe3.2L6GAS
1959American MotorsAmericanSuper3.2L6GAS
1959StudebakerLarkBase4.2V8GAS
1959StudebakerLarkBase2.8L6GAS
1959StudebakerLarkBase4.7V8GAS
1959StudebakerSilver HawkBase4.2V8GAS
1959StudebakerSilver HawkBase4.7V8GAS
1959StudebakerSilver HawkBase2.8L6GAS
1959StudebakerScotsman4E34.0L6GAS
1959StudebakerScotsman4E12.8L6GAS
1959StudebakerScotsman4E24.2V8GAS
1959Studebaker4E1Base2.8L6GAS
1959Studebaker4E7Base4.2V8GAS
1959Studebaker4E7Base4.7V8GAS
1958American MotorsAmericanDeluxe3.2L6GAS
1958American MotorsAmericanSuper3.2L6GAS
1958StudebakerGolden HawkBase4.7V8GAS
1958StudebakerSilver HawkBase3.0L6GAS
1958StudebakerSilver HawkBase4.2V8GAS
1958StudebakerSilver HawkBase4.7V8GAS
1958StudebakerScotsman3E13.0L6GAS
1958StudebakerScotsman30---U/K
1958Studebaker3E6Base4.0L6GAS
1958Studebaker3E7Base4.2V8GAS
1958StudebakerChampionBase3.0L6GAS
1958StudebakerCommanderBase4.2V8GAS
1958StudebakerCommanderBase4.7V8GAS
1958StudebakerPresidentBase4.7V8GAS
1957StudebakerGolden HawkBase4.7V8GAS
1957StudebakerSilver HawkBase3.0L6GAS
1957StudebakerSilver HawkBase4.2V8GAS
1957StudebakerSilver HawkBase4.7V8GAS
1957StudebakerChampionBase3.0L6GAS
1957StudebakerCommanderBase4.2V8GAS
1957StudebakerCommanderBase4.7V8GAS
1957StudebakerPresidentBase4.7V8GAS
1956Jeep475Base2.2L4GAS1" Bore Diameter
1956StudebakerFlight HawkBase3.0L6GAS
1956StudebakerPower HawkBase4.2V8GAS
1956StudebakerPower HawkBase4.7V8GAS
1956StudebakerSky HawkBase4.7V8GAS
1956StudebakerTranstar2E123.7V8GAS
1956StudebakerTranstar2E73.7V8GAS
1956StudebakerTranstar2E53.0L6GAS
1956StudebakerGolden HawkBase5.8V8GAS
1956StudebakerChampionBase3.0L6GAS
1956StudebakerCommanderBase4.2V8GAS
1956StudebakerCommanderBase4.7V8GAS
1956StudebakerPresidentBase4.7V8GAS
1955JeepWillysUtility Wagon3.7L6GAS1" Bore Diameter
1955JeepWillysUtility Wagon2.2L4GAS1" Bore Diameter
1955JeepWillysUtility Wagon3.7L6GAS1" Bore Diameter
1955JeepWillysSedan Delivery2.2L4GAS1" Bore Diameter
1955StudebakerE5Base3.0L6GAS1" Bore Diameter
1955StudebakerE7Base3.7V8GAS1" Bore Diameter
1955StudebakerChampionBase3.0L6GAS
1955StudebakerCommanderBase4.2V8GAS
1955StudebakerCommanderBase3.7V8GAS
1955StudebakerE6Base4.0L6GAS1" Bore Diameter
1955StudebakerPresidentBase4.2V8GAS
1955NashRamblerCustom3.2L6GAS
1955NashRamblerDeluxe3.2L6GAS
1955NashRamblerSuper3.2L6GAS
1955NashRamblerFleet3.2L6GAS
1955HudsonRamblerFleet Special3.2L6GAS
1955HudsonRamblerCustom3.2L6GAS
1955HudsonRamblerDeluxe3.2L6GAS
1955HudsonRamblerSuper3.2L6GAS
1954Studebaker3R5Base2.8L6GAS1" Bore Diameter
1954Studebaker3R6Base4.0L6GAS1" Bore Diameter
1954StudebakerChampionBase2.8L6GAS
1954StudebakerCommanderLand Cruiser3.8V8GAS
1954StudebakerCommanderBase3.8V8GAS
1954NashRamblerBase3.2L6GAS
1954NashRamblerBase3.0L6GAS
1953JeepWillysSedan Delivery2.2L4GAS1" Bore Diameter
1953Studebaker2R5Base2.8L6GAS
1953Studebaker2R6Base4.0L6GAS
1953StudebakerChampionBase2.8L6GAS
1953StudebakerCommanderBase3.8V8GAS
1953StudebakerCommanderLand Cruiser3.8V8GAS
1953NashRamblerBase3.0L6GAS
1953NashRamblerBase3.2L6GAS
1952Studebaker2R5Base2.8L6GAS
1952Studebaker2R6Base4.0L6GAS
1952StudebakerChampionBase2.8L6GAS
1952StudebakerCommanderBase3.8V8GAS
1952StudebakerCommanderLand Cruiser3.8V8GAS
1952NashRamblerBase3.0L6GAS
1952NashRamblerBase2.8L6GAS
1951Studebaker2R5Base2.8L6GAS
1951Studebaker2R6Base4.0L6GAS
1951StudebakerChampionBase2.8L6GAS
1951StudebakerCommanderBase3.8V8GAS
1951StudebakerCommanderLand Cruiser3.8V8GAS
1951NashRamblerBase2.8L6GAS
1950Studebaker2R5Base2.8L6GAS
1950Studebaker2R6Base2.8L6GAS
1950Studebaker2R6Base4.0L6GAS
1950StudebakerChampionBase2.8L6GAS
1950StudebakerCommanderLand Cruiser4.0L6GAS
1950StudebakerCommanderBase4.0L6GAS
1950NashRamblerBase2.8L6GAS
1949StudebakerCommanderDeluxe---U/K
1949StudebakerCommanderRegal Deluxe---U/K
1949StudebakerCommanderLand Cruiser4.0L6GAS
1949Studebaker2R5Base2.8L6GAS
1948StudebakerCommanderRegal Deluxe---U/K
1948StudebakerCommanderDeluxe---U/K
1948StudebakerCommanderLand Cruiser3.7L6GAS
1947StudebakerCommanderDeluxe---U/K
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)4.8
Length (in)9.4
Master Cylinder Bore Diameter1
Master Cylinder Bore Diameter25.4
Master Cylinder Cap IncludedNo
Master Cylinder MaterialIron
Mounting Bracket IncludedNo
Mounting Hole Diameter0.406
Mounting Hole Quantity2
Port Quantity1
Primary Outlet Thread Diameter0.5
Primary Outlet Thread Diameter12.7
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 IncludedYes
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)4
Width (in)5.8
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.

✕

Free shipping Icon

FREE SHIPPING

Available on all kits, sets & Bison performance products