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Please, add your first item to the wishlist

Select vehicle to confirm fitment

Brake Master Cylinder

PART#: 18M118
ACDelco

$42.95

In stock

Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
1993DodgeD150Base5.2V8GASwith Plastic Reservoir
1993DodgeD150Base5.9V8GASwith Plastic Reservoir
1993DodgeD150Base3.9V6GASwith Plastic Reservoir
1993DodgeRamchargerCanyon Sport5.9V8GAS
1993DodgeRamchargerBase5.9V8GAS
1993DodgeRamchargerCanyon Sport5.2V8GAS
1993DodgeRamchargerRoyal SE5.9V8GAS
1993DodgeRamchargerBase5.2V8GAS
1993DodgeRamchargerRoyal SE5.2V8GAS
1993DodgeW150Base3.9V6GAS
1993DodgeW150Base5.9V8GAS
1993DodgeW150Base5.2V8GAS
1992DodgeD150Base3.9V6GASwith Plastic Reservoir
1992DodgeD150Base5.2V8GASwith Plastic Reservoir
1992DodgeRamchargerCanyon Sport5.2V8GAS
1992DodgeRamchargerCanyon Sport5.9V8GAS
1992DodgeRamchargerBase5.2V8GAS
1992DodgeRamchargerBase5.9V8GAS
1992DodgeRamchargerRoyal SE5.2V8GAS
1992DodgeRamchargerRoyal SE5.9V8GAS
1992DodgeW150Base3.9V6GAS
1992DodgeW150Base5.2V8GAS
1991DodgeD150S3.9V6GASwith Plastic Reservoir
1991DodgeD150Base3.9V6GASwith Plastic Reservoir
1991DodgeD150Base5.9V8GASwith Plastic Reservoir
1991DodgeD150S5.2V8GASwith Plastic Reservoir
1991DodgeD150Base5.2V8GASwith Plastic Reservoir
1991DodgeRamchargerBase5.9V8GAS
1991DodgeRamchargerRoyal SE5.9V8GAS
1991DodgeRamchargerCanyon Sport5.9V8GAS
1991DodgeRamchargerBase5.2V8GAS
1991DodgeRamchargerCanyon Sport5.2V8GAS
1991DodgeRamchargerRoyal SE5.2V8GAS
1991DodgeW150S5.2V8GAS
1991DodgeW150S3.9V6GAS
1991DodgeW150S5.9V8GAS
1991DodgeW150Base5.9V8GAS
1991DodgeW150Base3.9V6GAS
1991DodgeW150Base5.2V8GAS
1990DodgeD150Base3.9V6GASwith Plastic Reservoir
1990DodgeD150S3.9V6GASwith Plastic Reservoir
1990DodgeD150S5.2V8GASwith Plastic Reservoir
1990DodgeD150Base5.2V8GASwith Plastic Reservoir
1990DodgeD150Base5.9V8GASwith Plastic Reservoir
1990DodgeRamchargerBase5.2V8GAS
1990DodgeRamchargerBase5.9V8GAS
1990DodgeRamchargerRoyal SE5.2V8GAS
1990DodgeRamchargerRoyal SE5.9V8GAS
1990DodgeW150S3.9V6GAS
1990DodgeW150Base5.2V8GAS
1990DodgeW150Base3.9V6GAS
1990DodgeW150S5.2V8GAS
1990DodgeW150Base5.9V8GAS
1989DodgeB150Base3.9V6GAS
1989DodgeB150Base5.2V8GAS
1989DodgeB250Base5.9V8GASwithout Hydro-Boost
1989DodgeB250Base3.9V6GASwithout Hydro-Boost
1989DodgeB250Base5.2V8GASwithout Hydro-Boost
1989DodgeB350Base5.2V8GASwithout Hydro-Boost
1989DodgeB350Base5.9V8GASwithout Hydro-Boost
1989DodgeD100Custom5.2V8GASwith Plastic Reservoir
1989DodgeD100Custom3.9V6GASwith Plastic Reservoir
1989DodgeD150Base3.9V6GASwith Plastic Reservoir
1989DodgeD150Base5.9V8GASwith Plastic Reservoir
1989DodgeD150Base5.2V8GASwith Plastic Reservoir
1989DodgeRamchargerBase5.2V8GAS
1989DodgeRamchargerBase5.9V8GAS
1989DodgeRamchargerRoyal SE5.2V8GAS
1989DodgeRamchargerRoyal SE5.9V8GAS
1989DodgeW100Custom3.9V6GAS
1989DodgeW100Custom5.2V8GAS
1989DodgeW150Base5.9V8GAS
1989DodgeW150Base3.9V6GAS
1989DodgeW150Base5.2V8GAS
1988DodgeB150Base5.2V8GAS
1988DodgeB150Base3.9V6GAS
1988DodgeB250Base3.9V6GASwithout Hydro-Boost
1988DodgeB250Base5.2V8GASwithout Hydro-Boost
1988DodgeB250Base5.9V8GASwithout Hydro-Boost
1988DodgeB350Base5.9V8GASwithout Hydro-Boost
1988DodgeB350Base5.2V8GASwithout Hydro-Boost
1988DodgeD100Custom3.9V6GASwith Plastic Reservoir
1988DodgeD100Custom5.9V8GASwith Plastic Reservoir
1988DodgeD100Custom5.2V8GASwith Plastic Reservoir
1988DodgeD150Base3.9V6GASwith Plastic Reservoir
1988DodgeD150Base5.2V8GASwith Plastic Reservoir
1988DodgeD150Base5.9V8GASwith Plastic Reservoir
1988DodgeD250Base3.9V6GASw/ o 4500lb Axle
1988DodgeD250Base5.2V8GASw/ o 4500lb Axle
1988DodgeD250Base5.9V8GASw/ o 4500lb Axle
1988DodgeD350Base5.9V8GASw/ o 4500lb Axle
1988DodgeRamchargerBase5.2V8GAS
1988DodgeRamchargerBase5.9V8GAS
1988DodgeRamchargerRoyal SE5.2V8GAS
1988DodgeRamchargerRoyal SE5.9V8GAS
1988DodgeW100Custom5.2V8GAS
1988DodgeW100Custom5.9V8GAS
1988DodgeW150Base5.2V8GAS
1988DodgeW150Base5.9V8GAS
1988DodgeW250Base5.2V8GASw/ o 4500lb Axle
1988DodgeW250Base5.9V8GASw/ o 4500lb Axle
1988DodgeW350Base5.9V8GASw/ o 4500lb Axle
1987DodgeB150Base5.2V8GAS
1987DodgeB150Base3.7L6GAS
1987DodgeB250Base5.9V8GASwithout Hydro-Boost
1987DodgeB250Base3.7L6GASwithout Hydro-Boost
1987DodgeB250Base5.2V8GASwithout Hydro-Boost
1987DodgeB350Base5.2V8GASwithout Hydro-Boost
1987DodgeB350Base5.9V8GASwithout Hydro-Boost
1987DodgeD100Custom3.7L6GASwith Plastic Reservoir
1987DodgeD100Custom5.2V8GASwith Plastic Reservoir
1987DodgeD100Custom5.9V8GASwith Plastic Reservoir
1987DodgeD150Base5.9V8GASwith Plastic Reservoir
1987DodgeD150Base3.7L6GASwith Plastic Reservoir
1987DodgeD150Base5.2V8GASwith Plastic Reservoir
1987DodgeD250Base5.2V8GASw/ o 4500lb Axle
1987DodgeD250Base5.9V8GASw/ o 4500lb Axle
1987DodgeD250Base3.7L6GASw/ o 4500lb Axle
1987DodgeD350Base5.9V8GASw/ o 4500lb Axle
1987DodgeRamchargerRoyal SE5.9V8GAS
1987DodgeRamchargerBase5.2V8GAS
1987DodgeRamchargerBase5.9V8GAS
1987DodgeRamchargerRoyal SE5.2V8GAS
1987DodgeW100Custom3.7L6GAS
1987DodgeW100Custom5.2V8GAS
1987DodgeW100Custom5.9V8GAS
1987DodgeW150Base3.7L6GAS
1987DodgeW150Base5.9V8GAS
1987DodgeW150Base5.2V8GAS
1987DodgeW250Base5.9V8GASw/ o 4500lb Axle
1987DodgeW250Base5.2V8GASw/ o 4500lb Axle
1987DodgeW350Base5.9V8GASw/ o 4500lb Axle
1986DodgeB150Base5.2V8GAS
1986DodgeB150Base3.7L6GAS
1986DodgeB250Base3.7L6GASwithout Hydro-Boost
1986DodgeB250Base5.2V8GASwithout Hydro-Boost
1986DodgeB250Base5.9V8GASwithout Hydro-Boost
1986DodgeB350Base5.9V8GASwithout Hydro-Boost
1986DodgeB350Base5.2V8GASwithout Hydro-Boost
1986DodgeD100Custom3.7L6GASwith Plastic Reservoir
1986DodgeD100Custom5.9V8GASwith Plastic Reservoir
1986DodgeD100Custom5.2V8GASwith Plastic Reservoir
1986DodgeD150Base3.7L6GASwith Plastic Reservoir
1986DodgeD150Base5.2V8GASwith Plastic Reservoir
1986DodgeD150Base5.9V8GASwith Plastic Reservoir
1986DodgeD250Base3.7L6GASw/ o 4500lb Axle
1986DodgeD250Base5.2V8GASw/ o 4500lb Axle
1986DodgeD250Base5.9V8GASw/ o 4500lb Axle
1986DodgeD350Base5.9V8GASw/ o 4500lb Axle
1986DodgeRamchargerBase5.2V8GAS
1986DodgeRamchargerBase5.9V8GAS
1986DodgeRamchargerRoyal SE5.2V8GAS
1986DodgeRamchargerRoyal SE5.9V8GAS
1986DodgeW100Custom3.7L6GAS
1986DodgeW100Custom5.2V8GAS
1986DodgeW100Custom5.9V8GAS
1986DodgeW150Base3.7L6GAS
1986DodgeW150Base5.2V8GAS
1986DodgeW150Base5.9V8GAS
1986DodgeW250Base5.2V8GASw/ o 4500lb Axle
1986DodgeW250Base5.9V8GASw/ o 4500lb Axle
1986DodgeW350Base5.9V8GASw/ o 4500lb Axle
1985DodgeB150Base3.7L6GAS
1985DodgeB150Base5.2V8GAS
1985DodgeB250Base3.7L6GASwithout Hydro-Boost
1985DodgeB250Base5.2V8GASwithout Hydro-Boost
1985DodgeB250Base5.9V8GASwithout Hydro-Boost
1985DodgeB350Base5.2V8GASwithout Hydro-Boost
1985DodgeB350Base5.9V8GASwithout Hydro-Boost
1985DodgeD150Base5.9V8GASwith Plastic Reservoir
1985DodgeD150Base3.7L6GASwith Plastic Reservoir
1985DodgeD150Base5.2V8GASwith Plastic Reservoir
1985DodgeD250Base5.9V8GASwith Aluminum Master Cylinder
1985DodgeD250Base3.7L6GASwith Aluminum Master Cylinder
1985DodgeD250Base5.2V8GASwith Aluminum Master Cylinder
1985DodgeD350Base5.9V8GASw/ o 4500lb Axle
1985DodgeRamchargerBase5.2V8GAS
1985DodgeRamchargerBase5.9V8GAS
1985DodgeRamchargerRoyal SE5.2V8GAS
1985DodgeRamchargerRoyal SE5.9V8GAS
1985DodgeW150Base3.7L6GAS
1985DodgeW150Base5.9V8GAS
1985DodgeW150Base5.2V8GAS
1985DodgeW250Base5.9V8GASw/ o 4500lb Axle
1985DodgeW250Base5.2V8GASw/ o 4500lb Axle
1985DodgeW350Base5.9V8GASw/ o 4500lb Axle
1985DodgeD100Custom3.7L6GASwith Plastic Reservoir
1985DodgeD100Custom5.9V8GASwith Plastic Reservoir
1985DodgeD100Custom5.2V8GASwith Plastic Reservoir
1985DodgeW100Custom3.7L6GAS
1985DodgeW100Custom5.2V8GAS
1985DodgeW100Custom5.9V8GAS
1984DodgeB150Base3.7L6GAS
1984DodgeB150Base5.2V8GAS
1984DodgeB250Base3.7L6GASwithout Hydro-Boost
1984DodgeB250Base5.2V8GASwithout Hydro-Boost
1984DodgeB250Base5.9V8GASwithout Hydro-Boost
1984DodgeB350Base5.9V8GASwithout Hydro-Boost
1984DodgeB350Base5.2V8GASwithout Hydro-Boost
1984DodgeD150Base3.7L6GASwith Plastic Reservoir
1984DodgeD150Base5.2V8GASwith Plastic Reservoir
1984DodgeD150Base5.9V8GASwith Plastic Reservoir
1984DodgeD250Base3.7L6GASwith Aluminum Master Cylinder
1984DodgeD250Base5.2V8GASwith Aluminum Master Cylinder
1984DodgeD250Base5.9V8GASwith Aluminum Master Cylinder
1984DodgeD350Base5.9V8GASw/ o 4500lb Axle
1984DodgeRamchargerBase5.9V8GAS
1984DodgeRamchargerRoyal SE5.2V8GAS
1984DodgeRamchargerRoyal SE5.9V8GAS
1984DodgeRamchargerBase5.2V8GAS
1984DodgeW150Base3.7L6GAS
1984DodgeW150Base5.2V8GAS
1984DodgeW150Base5.9V8GAS
1984DodgeW250Base5.2V8GASw/ o 4500lb Axle
1984DodgeW250Base5.9V8GASw/ o 4500lb Axle
1984DodgeW350Base5.9V8GASw/ o 4500lb Axle
1984DodgeD100Custom3.7L6GAS
1984DodgeD100Custom5.2V8GAS
1984DodgeD100Custom5.9V8GAS
1984DodgeW100Custom3.7L6GAS
1984DodgeW100Custom5.2V8GAS
1984DodgeW100Custom5.9V8GAS
1983DodgeB150Base3.7L6GAS
1983DodgeB150Base5.2V8GAS
1983DodgeB250Base3.7L6GASwithout Hydro-Boost
1983DodgeB250Base5.2V8GASwithout Hydro-Boost
1983DodgeB350Base5.2V8GASwithout Hydro-Boost
1983DodgeB350Base5.9V8GASwithout Hydro-Boost
1983DodgeD150Base3.7L6GASwith Aluminum Master Cylinder
1983DodgeD150Base5.2V8GASwith Aluminum Master Cylinder
1983DodgeD150Miser3.7L6GASwith Aluminum Master Cylinder
1983DodgeD150Miser5.2V8GASwith Aluminum Master Cylinder
1983DodgeD250Base3.7L6GAS
1983DodgeD250Base5.2V8GAS
1983DodgeD350Base5.2V8GAS
1983DodgeD350Base5.9V8GAS
1983DodgeRamchargerRoyal SE5.2V8GASwith Plastic Reservoir
1983DodgeRamchargerBase5.2V8GASwith Plastic Reservoir
1983DodgeW150Base3.7L6GASwith Plastic Reservoir
1983DodgeW150Base5.2V8GASwith Plastic Reservoir
1983DodgeW250Base5.2V8GASwith Plastic Reservoir
1983DodgeW350Base5.9V8GASw/ o 4500lb Axle
1983DodgeW350Base5.2V8GASw/ o 4500lb Axle
1983PlymouthPB150Voyager3.7L6GASwith Aluminum Master Cylinder; with Plastic Reservoir
1983PlymouthPB150Voyager5.2V8GASwith Aluminum Master Cylinder; with Plastic Reservoir
1983PlymouthPB250Voyager3.7L6GAS
1983PlymouthPB250Voyager5.2V8GAS
1983PlymouthPB350Voyager5.2V8GASw/o School Bus Package
1983PlymouthPB350Voyager5.9V8GASw/o School Bus Package
1982DodgeB150Base3.7L6GAS
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 Size1.125
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 Diameter1.125
Master Cylinder Bore Diameter28.575
Master Cylinder Cap IncludedYes
Master Cylinder MaterialIron
Measurements1 1/8 in Cylinder Bore
Mounting Bracket IncludedNo
Mounting Hole Diameter0.343
Mounting Hole Quantity2
Port Quantity2
Primary Outlet Thread Diameter0.5625
Primary Outlet Thread Diameter14.287
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
Reservoir MaterialPlastic
Secondary Outlet Thread Diameter0.5
Secondary Outlet Thread Diameter12.7
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)4.57
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

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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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