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Lowest Price GuaranteeMaster Cylinder Assemblies
- Master Cylinder Assembly
Part TypeMaster Cylinder
BrandACDELCO
Package Height4.5
Package Width7.0
Package Length9.4
Weight9.25 PG
Mounting Hole Quantity2
Primary Outlet Thread Diameter (In)0.5
Master Cylinder Bore Diameter1.125
Push Rod IncludedNo
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 4Check the thickness of your brake pads.
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).
Secondary Outlet Thread Diameter0.5625
Secondary Outlet Thread Diameter (In)0.5625
New Or RemanufacturedNew
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. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Port Quantity2
Primary Outlet Thread Diameter0.5
Master Cylinder Bore Diameter (Mm)28.575
Width (In)5.8
Bleeder Hoses IncludedYes
Bore Size (In)1.125
Primary Outlet Thread Diameter (Mm)12.7
Length (In)9.4
New Or RemanufacturedNew
Pushrod IncludedNo
Secondary Outlet Thread Diameter (Mm)14.287
Part CategoryReplacement Parts
Good Maintenance Practices - Section 2 - Bullet 3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4Parking brake adjustments (as needed).
Programming RequiredNo
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 - HeaderThe following should be conducted by a qualified technician:
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 1Brake warning light is on.
Signs Of Wear &#38; Troubleshooting - Section 1 - HeaderBrake cylinder signs of wear include:
Mounting Bracket IncludedNo
Faq - Answer 3Yes, ACDelco Professional Brake Cylinders come with a 12 month / unlimited mile warranty.
Mounting Hole Diameter0.423
Faq - Answer 2Yes, ACDelco also offers GM OE brake cylinders.
Faq - Answer 1No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
Master Cylinder Cap IncludedYes
Features &#38; Benefits - Bullet 2Pressure tested to ensure safe and confident braking
Features &#38; Benefits - Bullet 3Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
Features &#38; Benefits - Bullet 4Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
Features &#38; Benefits - Bullet 5Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
Reservoir IncludedYes
Features &#38; Benefits - Bullet 1Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
Measurements1 1/8 in Cylinder Bore
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems:
Brake Booster IncludedNo
Height (In)4.8
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 2Fluid spots beneath the car, indicating there may be a leak within the cylinder.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 3Difficulty stopping the vehicle.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 4A low or sinking brake pedal.
Master Cylinder MaterialIron
Part FitmentDirect Fit
Faq - Question 3Are these brake parts durable?
Weight (Lb)8.77
Grade TypePremium
Faq - Question 2Does ACDelco offer other grades of brake cylinders?
Faq - Question 1Do I have to replace all my brake parts when replacing my brake cylinder?
Vendor Part Number18M91
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
