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ACDelco 18M1878 | Brake Master Cylinder
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ACDelco 18M1878 | Brake Master Cylinder

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$53.54
Part Number
ACD18M1878
UPC:
00707773315026
Condition:
New
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Description
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. ? WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

BRAND: ACDelco

FEATURES:

  • American Motors;Buick;Cadillac;Checker;Chevrolet;GMC;Jeep;Oldsmobile;Pontiac
  • 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
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
  • Pressure tested to ensure safe and confident braking

SPECIFICS:

Bleeder Hoses IncludedYes
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?
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 Cap IncludedYes
Master Cylinder MaterialCast-Iron
Mounting Bracket IncludedNo
Mounting Hole Quantity2
Port Quantity2
Programming RequiredNo
Pushrod IncludedNo
Reservoir IncludedYes
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)1.4
Width (in)5.8

DOWNLOADS:

APPLICATIONS:

  • 1975-1975 Chevrolet G10 - Position: N/A
  • 1975-1977 Pontiac Grand LeMans - Position: N/A
  • 1971-1972 Pontiac Parisienne - Position: N/A
    • Rectangular Reservoir
  • 1976-1976 Cadillac Fleetwood - Position: N/A
    • Commercial Chassis
  • 1977-1978 Chevrolet G10 - Position: N/A
  • 1971-1972 Buick Centurion - Position: N/A
    • Rectangular Reservoir
  • 1975-1975 GMC G15 - Position: N/A
  • 1975-1977 Chevrolet Malibu - Position: N/A
  • 1971-1972 Chevrolet Impala - Position: N/A
    • Rectangular Reservoir
  • 1973-1975 Chevrolet K10 Suburban - Position: N/A
    • Except BENDIX Master Cylinder
  • 1971-1972 Pontiac Grandville - Position: N/A
    • Rectangular Reservoir
  • 1979-1980 Chevrolet K5 Blazer - Position: N/A
  • 1975-1979 Buick Skylark - Position: N/A
  • 1975-1977 Oldsmobile Cutlass Salon - Position: N/A
  • 1973-1980 Chevrolet Caprice - Position: N/A
  • 1979-1980 Chevrolet C10 Suburban - Position: N/A
  • 1973-1973 Pontiac GTO - Position: N/A
  • 1977-1980 Cadillac Fleetwood - Position: N/A
  • 1971-1975 Cadillac Calais - Position: N/A
  • 1975-1977 GMC Sprint - Position: N/A
  • 1973-1977 Buick Century - Position: N/A
  • 1974-1980 Jeep Cherokee - Position: N/A
  • 1975-1979 Oldsmobile Omega - Position: N/A
  • 1973-1980 Chevrolet Impala - Position: N/A
  • 1973-1977 Buick Regal - Position: N/A
  • 1973-1980 Buick Estate Wagon - Position: N/A
  • 1971-1972 Buick LeSabre - Position: N/A
    • Rectangular Reservoir
  • 1971-1972 Pontiac Grand Prix - Position: N/A
    • Except MORAINE Master Cylinder
  • 1976-1980 Pontiac Parisienne - Position: N/A
  • 1971-1972 Pontiac Bonneville - Position: N/A
    • Rectangular Reservoir
  • 1979-1980 GMC Jimmy - Position: N/A
  • 1973-1974 Chevrolet K10 Pickup - Position: N/A
  • 1972-1972 Buick Sportwagon - Position: N/A
    • Except MORAINE Master Cylinder
  • 1973-1977 GMC Jimmy - Position: N/A
  • 1973-1980 Oldsmobile Custom Cruiser - Position: N/A
  • 1971-1972 Chevrolet Caprice - Position: N/A
    • Rectangular Reservoir
  • 1973-1980 Oldsmobile 98 - Position: N/A
  • 1973-1975 Chevrolet Bel Air - Position: N/A
  • 1971-1972 Pontiac Grand Safari - Position: N/A
    • Rectangular Reservoir
  • 1976-1978 Chevrolet K10 Suburban - Position: N/A
    • Reservoir Cap Is Rectangular
  • 1975-1980 Jeep J20 - Position: N/A
  • 1976-1976 Pontiac Grand Prix - Position: N/A
    • Except MORAINE Master Cylinder
  • 1973-1975 Chevrolet C10 Suburban - Position: N/A
    • Except MORAINE Master Cylinder
  • 1975-1977 Oldsmobile Cutlass Supreme - Position: N/A
  • 1977-1980 Pontiac Firebird - Position: N/A
  • 1973-1980 Buick Electra - Position: N/A
  • 1971-1972 Buick Estate Wagon - Position: N/A
    • Rectangular Reservoir
  • 1973-1973 Oldsmobile Toronado - Position: N/A
  • 1971-1972 Oldsmobile 98 - Position: N/A
    • Rectangular Reservoir
  • 1979-1980 Chevrolet G10 - Position: N/A
    • w/ 11" X 2" Brakes
  • 1979-1980 GMC K1500 - Position: N/A
  • 1972-1972 Buick GS - Position: N/A
    • Except MORAINE Master Cylinder
  • 1977-1980 Cadillac DeVille - Position: N/A
  • 1973-1980 Oldsmobile Delta 88 - Position: N/A
  • 1979-1980 GMC C1500 Suburban - Position: N/A
  • 1970-1971 Buick Skylark - Position: N/A
  • 1973-1978 Pontiac Grand Safari - Position: N/A
  • 1975-1975 Buick Skyhawk - Position: N/A
    • Bore 1-1/8in
  • 1975-1977 Oldsmobile Cutlass - Position: N/A
  • 1972-1972 Buick GS 455 - Position: N/A
    • Except MORAINE Master Cylinder
  • 1975-1977 Pontiac LeMans - Position: N/A
  • 1971-1980 Cadillac Commercial Chassis - Position: N/A
  • 1979-1980 GMC C1500 - Position: N/A
  • 1974-1974 Pontiac Laurentian - Position: N/A
  • 1970-1970 Pontiac Tempest - Position: N/A
  • 1973-1980 Buick LeSabre - Position: N/A
  • 1977-1979 Pontiac Phoenix - Position: N/A
  • 1971-1972 Oldsmobile Delta 88 - Position: N/A
    • Rectangular Reservoir
  • 1975-1980 Chevrolet K10 - Position: N/A
  • 1974-1980 Jeep J10 - Position: N/A
  • 1973-1974 GMC K15/K1500 Pickup - Position: N/A
  • 1975-1978 GMC K15 - Position: N/A
  • 1976-1976 Chevrolet G10 - Position: N/A
    • Except BENDIX Master Cylinder
  • 1973-1975 Pontiac Grandville - Position: N/A
  • 1977-1977 Pontiac Grand Prix - Position: N/A
  • 1973-1974 GMC C15/C1500 Suburban - Position: N/A
    • Except MORAINE Master Cylinder
  • 1973-1974 GMC K15/K1500 Suburban - Position: N/A
    • Except BENDIX Master Cylinder
  • 1973-1978 Buick Riviera - Position: N/A
  • 1977-1978 GMC G15 - Position: N/A
  • 1976-1976 Oldsmobile Cutlass Tiara - Position: N/A
  • 1973-1973 GMC G25/G2500 Van - Position: N/A
    • with 2 Bails Except MORAINE Master Cylinder
  • 1975-1976 Pontiac Firebird - Position: N/A
    • Except MORAINE Master Cylinder
  • 1975-1976 Chevrolet Laguna - Position: N/A
  • 1973-1974 Chevrolet Blazer - Position: N/A
  • 1978-1978 GMC Jimmy - Position: N/A
    • Except MORAINE Master Cylinder
  • 1979-1980 Chevrolet C10 - Position: N/A
  • 1973-1973 Chevrolet G20 Van - Position: N/A
    • with 2 Bails Except MORAINE Master Cylinder
  • 1975-1975 Pontiac Grand Am - Position: N/A
  • 1971-1972 Chevrolet Brookwood - Position: N/A
    • Rectangular Reservoir
  • 1975-1976 GMC C15 - Position: N/A
  • 1975-1977 Chevrolet K5 Blazer - Position: N/A
  • 1975-1976 Chevrolet El Camino - Position: N/A
  • 1979-1980 GMC G1500 - Position: N/A
    • w/ 11" X 2" Brakes
  • 1971-1975 Cadillac Eldorado - Position: N/A
  • 1971-1972 Chevrolet Biscayne - Position: N/A
    • Rectangular Reservoir
  • 1977-1978 GMC C15 - Position: N/A
    • Except BENDIX Master Cylinder
  • 1973-1973 Buick Centurion - Position: N/A
  • 1976-1976 American Motors Matador - Position: N/A
    • with Rectangular Master Cylinder Cover
  • 1975-1975 Buick Apollo - Position: N/A
  • 1973-1975 Pontiac Grand Prix - Position: N/A
  • 1971-1972 Oldsmobile Custom Cruiser - Position: N/A
    • Rectangular Reservoir
  • 1975-1975 GMC C15 Suburban - Position: N/A
    • Except MORAINE Master Cylinder
  • 1967-1979 Checker Marathon - Position: N/A
  • 1977-1977 Chevrolet El Camino - Position: N/A
    • Except MORAINE Master Cylinder
  • 1976-1978 GMC K15 Suburban - Position: N/A
    • Reservoir Cap Is Rectangular
  • 1976-1976 GMC G15 - Position: N/A
    • Except BENDIX Master Cylinder
  • 1970-1971 Buick Sportwagon - Position: N/A
  • 1969-1971 Oldsmobile 442 - Position: N/A
  • 1973-1975 Oldsmobile Vista Cruiser - Position: N/A
  • 1975-1979 Chevrolet Nova - Position: N/A
  • 1976-1976 Cadillac Seville - Position: N/A
  • 1976-1978 Oldsmobile Toronado - Position: N/A
  • 1970-1970 Chevrolet Camaro - Position: N/A
  • 1977-1978 Chevrolet C10 - Position: N/A
    • Except BENDIX Master Cylinder
  • 1970-1971 Buick GS - Position: N/A
  • 1970-1971 Buick GS 455 - Position: N/A
  • 1971-1975 Cadillac DeVille - Position: N/A
  • 1971-1977 Chevrolet Monte Carlo - Position: N/A
  • 1973-1974 Pontiac Parisienne - Position: N/A
  • 1975-1976 Chevrolet C10 - Position: N/A
  • 1971-1972 Buick Electra - Position: N/A
    • Rectangular Reservoir
  • 1976-1980 Pontiac Laurentian - Position: N/A
  • 1978-1978 Chevrolet K5 Blazer - Position: N/A
    • Except MORAINE Master Cylinder
  • 1973-1980 Pontiac Catalina - Position: N/A
  • 1971-1972 Pontiac Catalina - Position: N/A
    • Rectangular Reservoir
  • 1971-1972 Buick Riviera - Position: N/A
    • Rectangular Reservoir
  • 1977-1978 American Motors Matador - Position: N/A
    • Vehicles Built For United States Market
  • 1971-1972 Chevrolet Townsman - Position: N/A
    • Rectangular Reservoir
  • 1972-1972 Buick Skylark - Position: N/A
    • Except MORAINE Master Cylinder
  • 1976-1978 Chevrolet C10 Suburban - Position: N/A
    • Reservoir Cap Is Rectangular
  • 1971-1975 Cadillac Fleetwood - Position: N/A
  • 1975-1975 GMC K15 Suburban - Position: N/A
    • Except BENDIX Master Cylinder
  • 1971-1972 Chevrolet Bel Air - Position: N/A
    • Rectangular Reservoir
  • 1976-1978 GMC C15 Suburban - Position: N/A
    • Reservoir Cap Is Rectangular
  • 1973-1980 Pontiac Bonneville - Position: N/A
  • 1975-1980 Chevrolet Camaro - Position: N/A
  • 1975-1977 Pontiac Ventura - Position: N/A
  • 1975-1980 Jeep Wagoneer - Position: N/A
  • 1971-1972 Chevrolet Kingswood - Position: N/A
    • Rectangular Reservoir
Warranty Information
1-year Replacement unlimited-mileage warranty
Attributes
Part Type:
Aftermarket
Product Description:
Brake Master Cylinder Assembly
Programming Required:
No
Mounting Bracket Included:
No
Mounting Hole Quantity:
2
Port Quantity:
2
Reservoir Included:
Yes
Hazardous Material:
No
Minimum Order Quantity:
1
Features & Benefits - Bullet 2:
Pressure tested to ensure safe and confident braking
Features & Benefits - Bullet 4:
Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
Features & Benefits - Bullet 3:
Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
Features & Benefits - Bullet 1:
Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
Weight (lb) (Pound):
1.4
Height (in) (Inch):
4.8
Width (in) (Inch):
5.8
Length (in) (Inch):
9.4
Signs of Wear & Troubleshooting - Section 1 - Bull:
Fluid spots beneath the car, indicating there may be a leak within the cylinder.
Signs of Wear & Troubleshooting - Section 1 - Bull:
Difficulty stopping the vehicle.
Signs of Wear & Troubleshooting - Section 1 - Bull:
A low or sinking brake pedal.
Signs of Wear & Troubleshooting - Section 1 - Bull:
Brake warning light is on.
Life Cycle Status:
Announced
FAQ - Answer 2:
Yes, ACDelco also offers GM OE brake cylinders.
Life Cycle Status Description:
Announced - Part has been announced to customers on a paper “New Number Announcement”. Part is active.
FAQ - Question 3:
Are these brake parts durable?
Item Level GTIN:
00707773315026
FAQ - Question 1:
Do I have to replace all my brake parts when replacing my brake cylinder?
FAQ - Question 2:
Does ACDelco offer other grades of brake cylinders?
Signs of Wear & Troubleshooting - Section 1 - Head:
Brake cylinder signs of wear include:
Features & Benefits - Bullet 5:
Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
FAQ - Answer 1:
No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
Good Maintenance Practices - Section 1 - Bullet 1:
Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Good Maintenance Practices - Section 1 - Bullet 2:
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - Section 1 - Bullet 3:
Inspect 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 4:
Check the thickness of your brake pads.
FAQ - Answer 3:
Yes, ACDelco Professional Brake Cylinders come with a 12 month / unlimited mile warranty.
Good Maintenance Practices - Section 1 - Header:
The following inspections and maintenance procedures can help prevent potential brake problems:
Good Maintenance Practices - Section 2 - Bullet 1:
Inspection of the brake hoses for brittleness or cracking.
Good Maintenance Practices - Section 2 - Bullet 2:
Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - Section 2 - Bullet 3:
Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4:
Parking brake adjustments (as needed).
Good Maintenance Practices - Section 2 - Header:
The following should be conducted by a qualified technician:
Pushrod Included:
No
Master Cylinder Cap Included:
Yes
Master Cylinder Material:
Cast-Iron
Brake Booster Included:
No
Bleeder Hoses Included:
Yes
Primary Outlet Thread Diameter (Inch):
0.5
Master Cylinder Bore Diameter (Inch):
1.125
Secondary Outlet Thread Diameter (Inch):
0.5625
Primary Outlet Thread Diameter (Millimeter):
12.7
Secondary Outlet Thread Diameter (Millimeter):
14.287
Master Cylinder Bore Diameter (Millimeter):
28.575
Country of Origin:
China
Weight - Each (Gross Pounds):
01.40
Weight - Case (Gross Pounds):
08.40
Height - Each (Inch):
04.80
Height - Case (Inch):
10.60
Length - Each (Inch):
09.40
Length - Case (Inch):
18.40
Width - Each (Inch):
05.80
Width - Case (Inch):
10.50



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