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Brake Master Cylinder

PART#: 18M76
ACDelco
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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

$68.95

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In stock

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Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
1980ChevroletCamaroBerlinetta3.8V6GAS
1980ChevroletCamaroBase5.7V8GAS
1980ChevroletCamaroRally Sport3.8V6GAS
1980ChevroletCamaroBerlinetta5.0V8GAS
1980ChevroletCamaroBase4.4V8GAS
1980ChevroletCamaroZ285.0V8GAS
1980ChevroletCamaroBase3.8V6GAS
1980ChevroletCamaroBerlinetta4.4V8GAS
1980ChevroletCamaroRally Sport4.4V8GAS
1980ChevroletCamaroRally Sport5.0V8GAS
1980ChevroletCamaroZ285.7V8GAS
1980ChevroletCamaroRally Sport3.8V6GAS
1980ChevroletCamaroBerlinetta5.7V8GAS
1980ChevroletCamaroBerlinetta3.8V6GAS
1980ChevroletCamaroRally Sport5.7V8GAS
1980ChevroletCamaroBase5.0V8GAS
1980ChevroletCamaroBase3.8V6GAS
1980PontiacFirebirdBase3.8V6GAS
1980PontiacFirebirdBase5.0V8GAS
1980PontiacFirebirdBase4.9V8GAS
1980PontiacFirebirdFormula5.0V8GAS
1980PontiacFirebirdEsprit5.0V8GAS
1980PontiacFirebirdEsprit3.8V6GAS
1980PontiacFirebirdFormula4.9V8GAS
1980PontiacFirebirdEsprit4.9V8GAS
1980PontiacFirebirdTrans Am5.0V8GAS
1980PontiacFirebirdTrans Am4.9V8GAS
1979BuickSkylarkCustom5.0V8GAS
1979BuickSkylarkS3.8V6GAS
1979BuickSkylarkCustom5.7V8GAS
1979BuickSkylarkBase3.8V6GAS
1979BuickSkylarkBase5.7V8GAS
1979BuickSkylarkBase5.0V8GAS
1979BuickSkylarkS5.0V8GAS
1979BuickSkylarkCustom3.8V6GAS
1979ChevroletCamaroZ285.0V8GAS
1979ChevroletCamaroBerlinetta5.0V8GAS
1979ChevroletCamaroRally Sport5.0V8GAS
1979ChevroletCamaroBerlinetta5.7V8GAS
1979ChevroletCamaroZ285.7V8GAS
1979ChevroletCamaroBase5.0V8GAS
1979ChevroletCamaroBerlinetta4.1L6GAS
1979ChevroletCamaroRally Sport5.7V8GAS
1979ChevroletCamaroRally Sport4.1L6GAS
1979ChevroletCamaroBase5.7V8GAS
1979ChevroletCamaroBase4.1L6GAS
1979ChevroletNovaRally5.0V8GAS
1979ChevroletNovaCustom5.7V8GAS
1979ChevroletNovaCustom5.0V8GAS
1979ChevroletNovaCustom4.1L6GAS
1979ChevroletNovaRally5.7V8GAS
1979ChevroletNovaRally4.1L6GAS
1979ChevroletNovaBase5.7V8GAS
1979ChevroletNovaBase5.0V8GAS
1979ChevroletNovaBase4.1L6GAS
1979OldsmobileOmegaBase5.0V8GAS
1979OldsmobileOmegaBase3.8V6GAS
1979OldsmobileOmegaBrougham LS5.0V8GAS
1979OldsmobileOmegaBase5.7V8GAS
1979OldsmobileOmegaBrougham5.7V8GAS
1979OldsmobileOmegaBrougham3.8V6GAS
1979OldsmobileOmegaBrougham LS5.7V8GAS
1979OldsmobileOmegaBrougham LS3.8V6GAS
1979OldsmobileOmegaBrougham5.0V8GAS
1979PontiacFirebirdEsprit5.0V8GAS
1979PontiacFirebirdEsprit4.9V8GAS
1979PontiacFirebirdFormula6.6V8GAS
1979PontiacFirebirdFormula6.6V8GAS
1979PontiacFirebirdTrans Am4.9V8GAS
1979PontiacFirebirdBase3.8V6GAS
1979PontiacFirebirdEsprit3.8V6GAS
1979PontiacFirebirdBase5.0V8GAS
1979PontiacFirebirdFormula5.7V8GAS
1979PontiacFirebirdBase4.9V8GAS
1979PontiacFirebirdBase5.7V8GAS
1979PontiacFirebirdEsprit5.7V8GAS
1979PontiacFirebirdFormula5.0V8GAS
1979PontiacFirebirdFormula4.9V8GAS
1979PontiacFirebirdTrans Am6.6V8GAS
1979PontiacFirebirdTrans Am6.6V8GAS
1979PontiacPhoenixBase3.8V6GAS
1979PontiacPhoenixSJ5.0V8GAS
1979PontiacPhoenixLJ5.7V8GAS
1979PontiacPhoenixBase5.0V8GAS
1979PontiacPhoenixSJ5.7V8GAS
1979PontiacPhoenixBase5.7V8GAS
1979PontiacPhoenixSJ3.8V6GAS
1979PontiacPhoenixLJ3.8V6GAS
1979PontiacPhoenixLJ5.0V8GAS
1978BuickSkylarkS3.8V6GAS
1978BuickSkylarkCustom5.0V8GAS
1978BuickSkylarkBase3.8V6GAS
1978BuickSkylarkCustom5.7V8GAS
1978BuickSkylarkSport5.7V8GAS
1978BuickSkylarkBase5.0V8GAS
1978BuickSkylarkSport3.8V6GAS
1978BuickSkylarkBase5.7V8GAS
1978BuickSkylarkS5.0V8GAS
1978BuickSkylarkCustom3.8V6GAS
1978BuickSkylarkSport5.0V8GAS
1978ChevroletCamaroBase5.0V8GAS
1978ChevroletCamaroLT Rally Sport5.7V8GAS
1978ChevroletCamaroRally Sport4.1L6GAS
1978ChevroletCamaroLT Rally Sport4.1L6GAS
1978ChevroletCamaroLT5.0V8GAS
1978ChevroletCamaroBase5.7V8GAS
1978ChevroletCamaroLT5.7V8GAS
1978ChevroletCamaroLT4.1L6GAS
1978ChevroletCamaroLT Rally Sport5.0V8GAS
1978ChevroletCamaroRally Sport5.0V8GAS
1978ChevroletCamaroRally Sport5.7V8GAS
1978ChevroletCamaroZ285.7V8GAS
1978ChevroletCamaroBase4.1L6GAS
1978ChevroletNovaBase5.7V8GAS
1978ChevroletNovaCustom4.1L6GAS
1978ChevroletNovaBase4.1L6GAS
1978ChevroletNovaCustom5.0V8GAS
1978ChevroletNovaPolice5.0V8GAS
1978ChevroletNovaRally5.7V8GAS
1978ChevroletNovaRally4.1L6GAS
1978ChevroletNovaCustom5.7V8GAS
1978ChevroletNovaRally5.0V8GAS
1978ChevroletNovaBase5.0V8GAS
1978ChevroletNovaPolice5.7V8GAS
1978ChevroletNovaPolice4.1L6GAS
1978OldsmobileOmegaSX5.7V8GAS
1978OldsmobileOmegaBase5.7V8GAS
1978OldsmobileOmegaBrougham5.7V8GAS
1978OldsmobileOmegaBrougham LS5.7V8GAS
1978OldsmobileOmegaSX3.8V6GAS
1978OldsmobileOmegaBrougham3.8V6GAS
1978OldsmobileOmegaSX5.0V8GAS
1978OldsmobileOmegaBrougham5.0V8GAS
1978OldsmobileOmegaBrougham LS5.0V8GAS
1978OldsmobileOmegaBase5.0V8GAS
1978OldsmobileOmegaBase3.8V6GAS
1978OldsmobileOmegaBrougham LS3.8V6GAS
1978PontiacFirebirdEsprit3.8V6GAS
1978PontiacFirebirdFormula5.7V8GAS
1978PontiacFirebirdBase5.0V8GAS
1978PontiacFirebirdBase3.8V6GAS
1978PontiacFirebirdEsprit5.0V8GAS
1978PontiacFirebirdFormula6.6V8GAS
1978PontiacFirebirdFormula6.6V8GAS
1978PontiacFirebirdFormula5.0V8GAS
1978PontiacFirebirdBase5.7V8GAS
1978PontiacFirebirdTrans Am6.6V8GAS
1978PontiacFirebirdEsprit5.7V8GAS
1978PontiacFirebirdTrans Am6.6V8GAS
1978PontiacPhoenixBase5.7V8GAS
1978PontiacPhoenixBase2.5L4GAS
1978PontiacPhoenixSJ3.8V6GAS
1978PontiacPhoenixBase5.0V8GAS
1978PontiacPhoenixLJ3.8V6GAS
1978PontiacPhoenixBase3.8V6GAS
1978PontiacPhoenixSJ5.7V8GAS
1978PontiacPhoenixSJ5.0V8GAS
1978PontiacPhoenixSJ2.5L4GAS
1978PontiacPhoenixLJ5.7V8GAS
1978PontiacPhoenixLJ5.0V8GAS
1978PontiacPhoenixLJ2.5L4GAS
1977BuickSkylarkBase5.0V8GAS
1977BuickSkylarkBase3.8V6GAS
1977BuickSkylarkBase4.9V8GAS
1977BuickSkylarkS5.7V8GAS
1977BuickSkylarkSR5.7V8GAS
1977BuickSkylarkBase5.7V8GAS
1977BuickSkylarkSR5.7V8GAS
1977BuickSkylarkS5.0V8GAS
1977BuickSkylarkS3.8V6GAS
1977BuickSkylarkBase5.7V8GAS
1977BuickSkylarkS4.9V8GAS
1977BuickSkylarkSR5.0V8GAS
1977BuickSkylarkSR3.8V6GAS
1977BuickSkylarkSR4.9V8GAS
1977ChevroletCamaroLT Rally Sport5.0V8GAS
1977ChevroletCamaroRally Sport5.7V8GAS
1977ChevroletCamaroRally Sport4.1L6GAS
1977ChevroletCamaroLT4.1L6GAS
1977ChevroletCamaroRally Sport5.0V8GAS
1977ChevroletCamaroBase5.7V8GAS
1977ChevroletCamaroZ285.7V8GAS
1977ChevroletCamaroBase4.1L6GAS
1977ChevroletCamaroBase5.0V8GAS
1977ChevroletCamaroLT Rally Sport5.7V8GAS
1977ChevroletCamaroLT Rally Sport4.1L6GAS
1977ChevroletCamaroLT5.0V8GAS
1977ChevroletCamaroLT5.7V8GAS
1977ChevroletNovaBase5.0V8GAS
1977ChevroletNovaBase5.7V8GAS
1977ChevroletNovaConcours5.7V8GAS
1977ChevroletNovaBase4.1L6GAS
1977ChevroletNovaConcours4.1L6GAS
1977ChevroletNovaPolice5.0V8GAS
1977ChevroletNovaRally5.7V8GAS
1977ChevroletNovaPolice5.7V8GAS
1977ChevroletNovaRally4.1L6GAS
1977ChevroletNovaConcours5.0V8GAS
1977ChevroletNovaRally5.0V8GAS
1977OldsmobileOmegaSX5.0V8GAS
1977OldsmobileOmegaBrougham5.0V8GAS
1977OldsmobileOmegaBase3.8V6GAS
1977OldsmobileOmegaF853.8V6GAS
1977OldsmobileOmegaF854.3V8GAS
1977OldsmobileOmegaSX5.7V8GAS
1977OldsmobileOmegaF855.7V8GAS
1977OldsmobileOmegaSX5.7V8GAS
1977OldsmobileOmegaDeluxe5.0V8GAS
1977OldsmobileOmegaBase5.7V8GAS
1977OldsmobileOmegaBrougham5.7V8GAS
1977OldsmobileOmegaSX3.8V6GAS
1977OldsmobileOmegaBase5.7V8GAS
1977OldsmobileOmegaBase4.3V8GAS
1977OldsmobileOmegaBrougham5.7V8GAS
1977OldsmobileOmegaBase5.0V8GAS
1977OldsmobileOmegaDeluxe3.8V6GAS
1977OldsmobileOmegaF855.0V8GAS
1977OldsmobileOmegaSX4.3V8GAS
1977OldsmobileOmegaDeluxe4.3V8GAS
1977OldsmobileOmegaDeluxe5.7V8GAS
1977OldsmobileOmegaBrougham3.8V6GAS
1977OldsmobileOmegaDeluxe5.7V8GAS
1977OldsmobileOmegaBrougham4.3V8GAS
1977PontiacFirebirdEsprit5.7V8GAS
1977PontiacFirebirdEsprit5.0V8GAS
1977PontiacFirebirdEsprit4.9V8GAS
1977PontiacFirebirdFormula6.6V8GAS
1977PontiacFirebirdFormula6.6V8GAS
1977PontiacFirebirdEsprit5.7V8GAS
1977PontiacFirebirdFormula5.0V8GAS
1977PontiacFirebirdFormula4.9V8GAS
1977PontiacFirebirdFormula5.7V8GAS
1977PontiacFirebirdBase6.6V8GAS
1977PontiacFirebirdTrans Am6.6V8GAS
1977PontiacFirebirdBase5.7V8GAS
1977PontiacFirebirdBase6.6V8GAS
1977PontiacFirebirdTrans Am6.6V8GAS
1977PontiacFirebirdFormula5.7V8GAS
1977PontiacFirebirdBase5.0V8GAS
1977PontiacFirebirdBase3.8V6GAS
1977PontiacFirebirdBase4.9V8GAS
1977PontiacFirebirdBase5.7V8GAS
1977PontiacFirebirdEsprit3.8V6GAS
1977PontiacPhoenixBase3.8V6GAS
1977PontiacPhoenixBase5.7V8GAS
1977PontiacPhoenixBase5.7V8GAS
1977PontiacPhoenixBase5.0V8GAS
1977PontiacPhoenixBase2.5L4GAS
1977PontiacVenturaBase5.0V8GAS
1977PontiacVenturaBase4.9V8GAS
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 IncludedYes
Master Cylinder MaterialIron
Measurements1 in Cylinder Bore
Mounting Bracket IncludedNo
Mounting Hole Diameter0.433
Mounting Hole Quantity2
Port Quantity2
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
Secondary Outlet Thread Diameter0.5625
Secondary Outlet Thread Diameter14.287
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)9.17
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.

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