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  2. Auto Parts
  3. Brake System
  4. Brake Hydraulics
  5. Brake Master Cylinder
  6. ACDelco 174-681

ACDelco 174-681 Brake Master Cylinder

ACDelco 174-681 Brake Master Cylinder Image 1
ACDelco 174-681 Brake Master Cylinder Image 2
ACDelco 174-681 Brake Master Cylinder

ACDelco
Brand:ACDelco
Part Number: 174-681
UPC: 00021625166896
Weight: 2.75 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

MASTER CYLINDER (SLP)

ACDelco GM Original Equipment Brake Master Cylinder is a hydraulic pump mounted to the brake booster and contains a reservoir that holds brake fluid. This original equipment brake master cylinder has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • GM-recommended replacement part for your GM vehicle's original factory component
  • Manufactured with GM Original Equipment specification for fit, form, and function
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • Offering the quality, reliability, and durability of GM OE
  • Pressure tested to ensure safe and confident braking

Specifications:

Bleeder Hoses Included:
No
Brake Booster Included:
No
Master Cylinder Bore Diameter:
0.874 in.
Master Cylinder Bore Diameter:
22.2 mm
Master Cylinder Cap Included:
Yes
Master Cylinder Material:
Aluminum
Mounting Bracket Included:
No
Mounting Hole Quantity:
2
Port Quantity:
4
Primary Outlet Thread Diameter:
13 mm
Programming Required:
No
Push Rod Included:
No
Reservoir Included:
Yes
Secondary Outlet Thread Diameter:
13 mm

Features and Benefits:

  • – Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
  • – Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
  • – Check the thickness of your brake pads.
  • – Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
  • – Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
  • – Inspection of the brake hoses for brittleness or cracking.
  • – Inspection of wheel bearings and grease seals.
  • – Parking brake adjustments (as needed).
  • The following inspections and maintenance procedures can help prevent potential brake problems.
  • The following should be conducted by a qualified technician:

Specifications:

Country of Origin:
US

Select a vehicle to narrow ACDelco 174-681 Brake Master Cylinder fitment info!

Last Updated: 03/02/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1989

 

1989

 
Buick Century

2.5L L4 Gas OHV,
2.8L V6 Gas OHV,
3.3L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors
 

Buick Century



2.5L L4 Gas OHV,
2.8L V6 Gas OHV,
3.3L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors

1 Per Vehicle

1989

 

1989

 
Buick Century

2.5L L4 Gas OHV,
2.8L V6 Gas OHV,
3.3L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors
 

Buick Century



2.5L L4 Gas OHV,
2.8L V6 Gas OHV,
3.3L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Buick Century

2.5L L4 Gas OHV,
2.8L V6 Gas OHV,
3.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
 

Buick Century



2.5L L4 Gas OHV,
2.8L V6 Gas OHV,
3.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum

1 Per Vehicle

1988

 

1988

 
Buick Skyhawk

2.0L L4 Gas OHV,
2.0L L4 Gas SOHC
1
 
W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Buick Skyhawk



2.0L L4 Gas OHV,
2.0L L4 Gas SOHC W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle

1991

 

1990

 

1989

 

1991

 

1990

 

1989

 
Buick Skylark

2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.3L V6 Gas OHV
1
 
Cast Iron
Power Brakes
Front Disc
Rear Drum
 

Buick Skylark



2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.3L V6 Gas OHV Cast Iron
Power Brakes
Front Disc
Rear Drum

1 Per Vehicle

1988

 

1988

 
Buick Skylark

2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.0L V6 Gas OHV
1
 
W/MAS/CYL LABELED NT & PWR BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Buick Skylark



2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.0L V6 Gas OHV W/MAS/CYL LABELED NT & PWR BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle

1991

 

1990

 

1991

 

1990

 
Chevrolet Beretta

2.2L L4 Gas OHV,
2.3L L4 Gas DOHC,
3.1L V6 Gas OHV
1
 
Vacuum Power Brakes
Power Brakes
 

Chevrolet Beretta



2.2L L4 Gas OHV,
2.3L L4 Gas DOHC,
3.1L V6 Gas OHV Vacuum Power Brakes
Power Brakes

1 Per Vehicle

1989

 

1989

 
Chevrolet Beretta

2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
Vacuum Power Brakes
Power Brakes
 

Chevrolet Beretta



2.0L L4 Gas OHV,
2.8L V6 Gas OHV Vacuum Power Brakes
Power Brakes

1 Per Vehicle

1988

 

1988

 
Chevrolet Beretta

2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
Vacuum Power Brakes
2nd Design
Power Brakes
 

Chevrolet Beretta



2.0L L4 Gas OHV,
2.8L V6 Gas OHV W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
Vacuum Power Brakes
2nd Design
Power Brakes

1 Per Vehicle

1991

 

1990

 

1991

 

1990

 
Chevrolet Cavalier

2.2L L4 Gas OHV,
3.1L V6 Gas OHV
1
 		 

Chevrolet Cavalier



2.2L L4 Gas OHV,
3.1L V6 Gas OHV
1 Per Vehicle

1989

 

1989

 
Chevrolet Cavalier

2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1
 		 

Chevrolet Cavalier



2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1 Per Vehicle

1988

 

1988

 
Chevrolet Cavalier

2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Chevrolet Cavalier



2.0L L4 Gas OHV,
2.8L V6 Gas OHV W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle

1989

 

1989

 
Chevrolet Celebrity

2.5L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
 

Chevrolet Celebrity



2.5L L4 Gas OHV,
2.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet Celebrity

2.5L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors
 

Chevrolet Celebrity



2.5L L4 Gas OHV,
2.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors

1 Per Vehicle

1991

 

1990

 

1991

 

1990

 
Chevrolet Corsica

2.2L L4 Gas OHV,
3.1L V6 Gas OHV
1
 
Vacuum Power Brakes
Power Brakes
 

Chevrolet Corsica



2.2L L4 Gas OHV,
3.1L V6 Gas OHV Vacuum Power Brakes
Power Brakes

1 Per Vehicle

1989

 

1989

 
Chevrolet Corsica

2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
Vacuum Power Brakes
Power Brakes
 

Chevrolet Corsica



2.0L L4 Gas OHV,
2.8L V6 Gas OHV Vacuum Power Brakes
Power Brakes

1 Per Vehicle

1988

 

1988

 
Chevrolet Corsica

2.0L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
Vacuum Power Brakes
2nd Design
Power Brakes
 

Chevrolet Corsica



2.0L L4 Gas OHV,
2.8L V6 Gas OHV W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
Vacuum Power Brakes
2nd Design
Power Brakes

1 Per Vehicle

1991

 

1990

 

1989

 

1991

 

1990

 

1989

 
Oldsmobile Cutlass Calais

2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.3L V6 Gas OHV
1
 
Cast Iron
Power Brakes
Front Disc
Rear Drum
 

Oldsmobile Cutlass Calais



2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.3L V6 Gas OHV Cast Iron
Power Brakes
Front Disc
Rear Drum

1 Per Vehicle

1988

 

1988

 
Oldsmobile Cutlass Calais

2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.0L V6 Gas OHV
1
 
W/MAS/CYL LABELED NT & PWR BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Oldsmobile Cutlass Calais



2.3L L4 Gas DOHC,
2.5L L4 Gas OHV,
3.0L V6 Gas OHV W/MAS/CYL LABELED NT & PWR BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle

1989

 

1989

 
Oldsmobile Cutlass Ciera

3.3L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors
 

Oldsmobile Cutlass Ciera



3.3L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors

1 Per Vehicle

1989

 

1989

 
Oldsmobile Cutlass Ciera

3.3L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors
 

Oldsmobile Cutlass Ciera



3.3L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors

1 Per Vehicle

1989

 

1988

 

1987

 

1989

 

1988

 

1987

 
Oldsmobile Cutlass Ciera

2.5L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors
 

Oldsmobile Cutlass Ciera



2.5L L4 Gas OHV,
2.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors

1 Per Vehicle

1989

 

1988

 

1987

 

1989

 

1988

 

1987

 
Oldsmobile Cutlass Ciera

2.5L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors
 

Oldsmobile Cutlass Ciera



2.5L L4 Gas OHV,
2.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Oldsmobile Cutlass Ciera

3.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors
 

Oldsmobile Cutlass Ciera



3.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Coupe
2 Doors

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Oldsmobile Cutlass Ciera

3.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors
 

Oldsmobile Cutlass Ciera



3.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors

1 Per Vehicle

1988

 

1988

 
Oldsmobile Firenza

2.0L L4 Gas OHV,
2.0L L4 Gas SOHC
1
 
W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Oldsmobile Firenza



2.0L L4 Gas OHV,
2.0L L4 Gas SOHC W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle

1989

 

1988

 

1989

 

1988

 
Pontiac 6000

2.5L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
FWD
 

Pontiac 6000



2.5L L4 Gas OHV,
2.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
FWD

1 Per Vehicle

1988

 

1988

 
Pontiac 6000

3.1L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
FWD
 

Pontiac 6000



3.1L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
FWD

1 Per Vehicle

1987

 

1987

 
Pontiac 6000

2.5L L4 Gas OHV,
2.8L V6 Gas OHV
1
 
LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors
 

Pontiac 6000



2.5L L4 Gas OHV,
2.8L V6 Gas OHV LGT WT BRK SYS(JA1), Cast Iron
Power Brakes
Front Disc
Rear Drum
Sedan
4 Doors

1 Per Vehicle

1991

 

1990

 

1989

 

1991

 

1990

 

1989

 
Pontiac Grand Am

2.3L L4 Gas DOHC,
2.5L L4 Gas OHV
1
 
Cast Iron
Power Brakes
Front Disc
Rear Drum
 

Pontiac Grand Am



2.3L L4 Gas DOHC,
2.5L L4 Gas OHV Cast Iron
Power Brakes
Front Disc
Rear Drum

1 Per Vehicle

1989

 

1989

 
Pontiac Grand Am

2.0L L4 Gas SOHC Turbo
1
 
Cast Iron
Power Brakes
Front Disc
Rear Drum
 

Pontiac Grand Am



2.0L L4 Gas SOHC Turbo Cast Iron
Power Brakes
Front Disc
Rear Drum

1 Per Vehicle

1988

 

1988

 
Pontiac Grand Am

2.0L L4 Gas SOHC Turbo,
2.3L L4 Gas DOHC,
2.5L L4 Gas OHV
1
 
W/MAS/CYL LABELED NT & PWR BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Pontiac Grand Am



2.0L L4 Gas SOHC Turbo,
2.3L L4 Gas DOHC,
2.5L L4 Gas OHV W/MAS/CYL LABELED NT & PWR BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle

1991

 

1991

 
Pontiac Sunbird

3.1L V6 Gas OHV
1
 		 

Pontiac Sunbird



3.1L V6 Gas OHV
1 Per Vehicle

1991

 

1990

 

1989

 

1991

 

1990

 

1989

 
Pontiac Sunbird

2.0L L4 Gas SOHC
1
 		 

Pontiac Sunbird



2.0L L4 Gas SOHC
1 Per Vehicle

1990

 

1989

 

1990

 

1989

 
Pontiac Sunbird

2.0L L4 Gas SOHC Turbo
1
 		 

Pontiac Sunbird



2.0L L4 Gas SOHC Turbo
1 Per Vehicle

1988

 

1988

 
Pontiac Sunbird

2.0L L4 Gas SOHC,
2.0L L4 Gas SOHC Turbo
1
 
W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design
 

Pontiac Sunbird



2.0L L4 Gas SOHC,
2.0L L4 Gas SOHC Turbo W/M/CYL LABELED NT & P/BOOST LABELED NT)(FOR 1ST DES SEE 18060138
2nd Design

1 Per Vehicle