ACDelco 18M1290 | Brake Master Cylinder

Part Number
Brake Master Cylinder

Fits: 00-04 Jaguar S-Type, 00-06 Lincoln LS, 02-05 Ford Thunderbird

Special Price $107.99 Regular Price $119.99
Out of stock
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Brake Master Cylinder



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Bleeder Hoses IncludedYes
Brake Booster IncludedNo
FAQ - A1No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
FAQ - A2Yes, ACDelco also offers GM OE brake cylinders.
FAQ - A3Yes, ACDelco Professional Brake Cylinders come with a 12 month / unlimited mile warranty.
FAQ - Q1Do I have to replace all my brake parts when replacing my brake cylinder?
FAQ - Q2Does ACDelco offer other grades of brake cylinders?
FAQ - Q3Are these brake parts durable?
Features & Benefits - B1Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
Features & Benefits - B2Pressure tested to ensure safe and confident braking
Features & Benefits - B3Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
Features & Benefits - B4Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
Features & Benefits - B5Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
Good Maintenance Practices - S1 B1Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Good Maintenance Practices - S1 B2Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - S1 B3Inspect 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 - S1 B4Check the thickness of your brake pads.
Good Maintenance Practices - S1 HThe following inspections and maintenance procedures can help prevent potential brake problems:
Good Maintenance Practices - S2 B1Inspection of the brake hoses for brittleness or cracking.
Good Maintenance Practices - S2 B2Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - S2 B3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - S2 B4Parking brake adjustments (as needed).
Good Maintenance Practices - S2 HThe following should be conducted by a qualified technician:
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Marketing Statement - Product LineBrakes are one area in which vehicle owners simply cannot compromise. With ACDelco Brakes, they can get the peace of mind that comes with parts that are expertly engineered, manufactured to stringent tolerances, thoroughly tested and backed by the ACDelco name. Choose from our GM Original Equipment, Professional, Advantage, and Specialty Series brake products to meet your performance needs and budget. For your GM and non-GM vehicles, trust ACDelco rotors, pads, drums, and other brake components to help keep you and your loved ones safe.
Marketing Statement - Sub BrandACDelco Professional, premium aftermarket, Brake products mean no compromises and quality at a fair price. ACDelco also offers select Specialty Brake products for Fleet and Police applications as well. Whether you call on our brake pads, brake shoes, rotors or drums, you can rest assured that ACDelco will give you the stopping power you need. And, with our warranty coverage, you will have the confidence and peace of mind that comes with owning ACDelco products.
Master Cylinder Bore Diameter1
Master Cylinder Cap IncludedNo
Master Cylinder MaterialAluminum
Mkt_State_Warranty_CA24 Months/40,000 KM (Parts Only). Please see for more details.
Mkt_State_Warranty_US24 Month / Unlimited Mile Limited Warranty (Parts Only). Please see for more details.
Mounting Bracket IncludedNo
Mounting Hole Quantity2
Port Quantity2
Primary Outlet Thread Diameter0.472
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.
Programming RequiredNO
Push Rod IncludedNo
Reservoir IncludedNo
Secondary Outlet Thread Diameter0.472
Signs of Wear & Troubleshooting - S1 B1Brake warning light is on.
Signs of Wear & Troubleshooting - S1 B2Fluid spots beneath the car, indicating there may be a leak within the cylinder.
Signs of Wear & Troubleshooting - S1 B3Difficulty stopping the vehicle.
Signs of Wear & Troubleshooting - S1 B4A low or sinking brake pedal.
Signs of Wear & Troubleshooting - S1 HBrake cylinder signs of wear include:

w/o Dynamic Stability Control



  • 2002-2005 Ford Thunderbird - Position: N/A
  • 2000-2006 Lincoln LS - Position: N/A
  • 2000-2004 Jaguar S-Type - Position: N/A
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.
What is a brake master cylinder?
The brake master cylinder converts brake pedal pressure into hydraulic pressure to activate the brakes.
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