ACDelco 18M2565 | Brake Master Cylinder

Part Number
Brake Master Cylinder

Fits the following vehicles: 2009-2012 Chevrolet Colorado, 2009-2012 GMC Canyon
Special Price $132.79 Regular Price $147.54
In stock
Only 3 left
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Estimated Ship Date: 1 Business Day or Less


ACDelco 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.


  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • Pressure tested to ensure safe and confident braking
  • Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
  • Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
  • Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear


Bleeder Hoses Included:Yes
Bore Size:1.060
Brake Booster Included:No
Height (in):5.6
Length (in):11.3
Master Cylinder Bore Diameter:1.0625
Master Cylinder Bore Diameter:26.9875
Master Cylinder Cap Included:Yes
Master Cylinder Material:Aluminum
Mounting Bracket Included:No
Mounting Hole Diameter:0.343
Mounting Hole Quantity:2
Port Quantity:2
Primary Outlet Thread Diameter:0.472
Primary Outlet Thread Diameter:12
Programming Required:No
Push Rod Included:No
Reservoir Included:Yes
Secondary Outlet Thread Diameter:0.472
Secondary Outlet Thread Diameter:12
Weight (lb):2.02
Width (in):7.7


  • 2009-2012 Chevrolet Colorado
  • 2009-2012 GMC Canyon

Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
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