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Please, add your first item to the wishlist

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Brake Master Cylinder

PART#: 18M2649
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

$102.95

Select vehicle to confirm fitment

In stock

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Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
2014SubaruImprezaWRX STI2.5H4GAS | AWD;
2014SubaruImprezaLimited2.0H4GAS | AWD;
2014SubaruImprezaWRX STI Limited2.5H4GAS | AWD;
2014SubaruImprezaPremium2.0H4GAS | AWD;
2014SubaruImprezaWRX2.5H4GAS | AWD;
2014SubaruImprezaWRX Limited2.5H4GAS | AWD;
2014SubaruImprezaBase2.0H4GAS | AWD;
2014SubaruImprezaSport Limited2.0H4GAS | AWD;
2014SubaruImprezaSport Premium2.0H4GAS | AWD;
2014SubaruImprezaWRX Premium2.5H4GAS | AWD;
2013SubaruForesterXT Premium2.5H4GAS | AWD;
2013SubaruForesterXT Touring2.5H4GAS | AWD;
2013SubaruForesterX Limited2.5H4GAS | AWD;
2013SubaruForesterX Premium2.5H4GAS | AWD;
2013SubaruForesterX2.5H4GAS | AWD;
2013SubaruForesterX Touring2.5H4GAS | AWD;
2013SubaruImprezaWRX Limited2.5H4GAS | AWD;
2013SubaruImprezaWRX2.5H4GAS | AWD;
2013SubaruImprezaWRX STI2.5H4GAS | AWD;
2013SubaruImprezaLimited2.0H4GAS | AWD;
2013SubaruImprezaPremium2.0H4GAS | AWD;
2013SubaruImprezaWRX Premium2.5H4GAS | AWD;
2013SubaruImprezaBase2.0H4GAS | AWD;
2013SubaruImprezaWRX STI Limited2.5H4GAS | AWD;
2013SubaruImprezaSport Limited2.0H4GAS | AWD;
2013SubaruImprezaSport Premium2.0H4GAS | AWD;
2012SubaruForesterX Premium2.5H4GAS | AWD;
2012SubaruForesterX Limited2.5H4GAS | AWD;
2012SubaruForesterXT Premium2.5H4GAS | AWD;
2012SubaruForesterX Touring2.5H4GAS | AWD;
2012SubaruForesterXT Touring2.5H4GAS | AWD;
2012SubaruForesterX2.5H4GAS | AWD;
2012SubaruImprezaWRX STI2.5H4GAS | AWD;
2012SubaruImprezaWRX Limited2.5H4GAS | AWD;
2012SubaruImprezaPremium2.0H4GAS | AWD;
2012SubaruImprezaLimited2.0H4GAS | AWD;
2012SubaruImprezaWRX STI Limited2.5H4GAS | AWD;
2012SubaruImprezaBase2.0H4GAS | AWD;
2012SubaruImprezaWRX2.5H4GAS | AWD;
2012SubaruImprezaSport Premium2.0H4GAS | AWD;
2012SubaruImprezaWRX Premium2.5H4GAS | AWD;
2012SubaruImprezaSport Limited2.0H4GAS | AWD;
2011SubaruImpreza2.5i2.5H4GAS | AWD;
2011SubaruImprezaOutback Sport2.5H4GAS | AWD;
2011SubaruImpreza2.5i Premium2.5H4GAS | AWD;
2011SubaruImprezaWRX STI Limited2.5H4GAS | AWD;
2011SubaruImprezaWRX2.5H4GAS | AWD;
2011SubaruImprezaWRX STI2.5H4GAS | AWD;
2011SubaruImprezaWRX Premium2.5H4GAS | AWD;
2011SubaruImprezaWRX Limited2.5H4GAS | AWD;
2011SubaruForesterXT Premium2.5H4GAS | AWD;
2011SubaruForesterX Limited2.5H4GAS | AWD;
2011SubaruForesterX2.5H4GAS | AWD;
2011SubaruForesterXT Touring2.5H4GAS | AWD;
2011SubaruForesterX Premium2.5H4GAS | AWD;
2011SubaruForesterX Touring2.5H4GAS | AWD;
2010SubaruForesterXT Premium2.5H4GAS | AWD;
2010SubaruForesterX Limited2.5H4GAS | AWD;
2010SubaruForesterX Premium2.5H4GAS | AWD;
2010SubaruForesterXT Limited2.5H4GAS | AWD;
2010SubaruForesterX2.5H4GAS | AWD;
2010SubaruImpreza2.5i2.5H4GAS | AWD;
2010SubaruImpreza2.5i Premium2.5H4GAS | AWD;
2010SubaruImpreza2.5 GT2.5H4GAS | AWD;
2010SubaruImprezaWRX STI2.5H4GAS | AWD;
2010SubaruImprezaWRX STI Special Edition2.5H4GAS | AWD;
2010SubaruImprezaWRX2.5H4GAS | AWD;
2010SubaruImprezaOutback Sport2.5H4GAS | AWD;
2010SubaruImprezaWRX Premium2.5H4GAS | AWD;
2010SubaruImprezaWRX Limited2.5H4GAS | AWD;
2009SubaruForesterX Limited2.5H4GAS | AWD;
2009SubaruForesterX2.5H4GAS | AWD;
2009SubaruForesterXT Limited2.5H4GAS | AWD;
2009SubaruForesterX Premium2.5H4GAS | AWD;
2009SubaruForesterXT2.5H4GAS | AWD;
2009SubaruImpreza2.5i2.5H4GAS | AWD;
2009SubaruImpreza2.5 GT2.5H4GAS | AWD;
2009SubaruImprezaWRX2.5H4GAS | AWD;
2009SubaruImprezaWRX Premium2.5H4GAS | AWD;
2009SubaruImprezaWRX STI2.5H4GAS | AWD;
2009SubaruImprezaOutback Sport2.5H4GAS | AWD;
2009SubaruLegacyGT spec.B2.5H4GAS | AWD;
2009SubaruLegacy3.0 R Limited3.0H6GAS | AWD;
2009SubaruLegacyGT Limited2.5H4GAS | AWD;
2009SubaruLegacy2.5i Special Edition2.5H4GAS | AWD;
2009SubaruLegacy2.5i2.5H4GAS | AWD;
2009SubaruLegacy3.0 R3.0H6GAS | AWD;
2009SubaruLegacy2.5i Limited2.5H4GAS | AWD;
2009SubaruOutback2.5i Limited2.5H4GAS | AWD;
2009SubaruOutback3.0 R Limited3.0H6GAS | AWD;
2009SubaruOutback2.5i2.5H4GAS | AWD;
2009SubaruOutback2.5i Special Edition2.5H4GAS | AWD;
2009SubaruOutbackXT Limited2.5H4GAS | AWD;
2008SubaruOutback2.5i Limited L.L. Bean Edition2.5H4GAS | AWD;
2008SubaruOutbackBase2.5H4GAS | AWD;
2008SubaruOutback2.5i2.5H4GAS | AWD;
2008SubaruOutbackR L.L. Bean Edition3.0H6GAS | AWD;
2008SubaruOutback2.5i L.L. Bean Edition2.5H4GAS | AWD;
2008SubaruImprezaWRX2.5H4GAS | AWD;
2008SubaruImprezaWRX STI2.5H4GAS | AWD;
2008SubaruImpreza2.5i2.5H4GAS | AWD;
2008SubaruImprezaOutback Sport2.5H4GAS | AWD;
2008SubaruLegacyGT spec.B2.5H4GAS | AWD;
2008SubaruLegacyGT Limited2.5H4GAS | AWD;
2008SubaruLegacy2.5i Limited2.5H4GASwith Dynamic Stability Control | AWD;
2008SubaruLegacy3.0 R Limited3.0H6GAS | AWD;
2008SubaruLegacy2.5i2.5H4GASwith Dynamic Stability Control | AWD; Transaxle; Automatic;
2007SubaruLegacyGT spec.B2.5H4GAS | AWD;
2007SubaruOutbackR L.L. Bean Edition3.0H6GAS | AWD;
2006SubaruOutbackR VDC Limited3.0H6GAS | AWD;
2005SubaruOutbackR3.0H6GASwith Dynamic Stability Control | AWD;
2005SubaruOutbackR L.L. Bean Edition3.0H6GASwith Dynamic Stability Control | AWD;
2005SubaruOutbackVDC Limited3.0H6GASwith Dynamic Stability Control | AWD;
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 Size0.938
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 Diameter0.937
Master Cylinder Bore Diameter23.7998
Master Cylinder Cap IncludedYes
Master Cylinder MaterialAluminum
Mounting Bracket IncludedNo
Mounting Hole Diameter0.343
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 IncludedYes
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)1.49
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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