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  2. Auto Parts
  3. Brake System
  4. Brake Hydraulics
  5. Brake Master Cylinder
  6. Dorman M39457

Dorman M39457 Brake Master Cylinder

Dorman M39457 Brake Master Cylinder Image 1
Dorman M39457 Brake Master Cylinder Image 2
Dorman M39457 Brake Master Cylinder Image 3
Dorman M39457 Brake Master Cylinder Image 4
Dorman M39457 Brake Master Cylinder

Dorman
Brand:Dorman
Part Number: M39457
UPC: 00082702398555
Weight: 12.1 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Brake Master Cylinder

This brake master cylinder is precision-engineered to match the design, function, and performance of the original master cylinder on specific vehicle years, makes and models. It is made of new, high-quality materials for a safe, durable replacement.

Features and Benefits:

  • 100% new - made entirely of new materials, not remanufactured, to ensure highest quality and safety
  • Durable design - all rubber components are made of high-quality EPDM compound for resistance to glycol-based brake fluid
  • Precise replacement - cylinder housing is constructed to match the casting material of the original part and ensure similar performance
  • Strict specifications - made to meet rigorous SAE International standards

Specifications:

Master Cylinder Bore Diameter:
1.75 in.
Master Cylinder Material:
Cast Iron
Mounting Hardware Included:
No
Number of Outlets:
2
Package Contents:
Master Cylinder
Reservoir Included:
Yes
Secondary Outlet Thread Diameter:
0.5 in.
Sensor Included:
No
ACDelco #:
174-682
ACDelco #:
18M246
Aimco #:
M900446
Autospecialty #:
M-90013
Bendix #:
11892
Cardone Select #:
13-8000
Centric Parts #:
130.80016
Coni-Seal #:
MC252540
General Motors #:
2035459
Raybestos Brake #:
MC39457
Wagner Brake #:
F119399
Wagner Brake #:
MC119399
Country of Origin:
CN

Select a vehicle to narrow Dorman M39457 Brake Master Cylinder fitment info!

Last Updated: 09/22/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1987

 

1987

 
Chevrolet C50

5.7L V8 Gas
1
 
Bore: 1.75 In.
w/Drum Brakes
 

Chevrolet C50



5.7L V8 Gas Bore: 1.75 In.
w/Drum Brakes

1 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
Chevrolet C50

4.8L L6 Gas OHV,
5.7L V8 Gas
1
 
Bore: 1.75 In.
Exc. Wagner FF52750
w/Drum Brakes
w/Dual Hydraulic System
 

Chevrolet C50



4.8L L6 Gas OHV,
5.7L V8 Gas Bore: 1.75 In.
Exc. Wagner FF52750
w/Drum Brakes
w/Dual Hydraulic System

1 Per Vehicle

1987

 

1986

 

1987

 

1986

 
Chevrolet C60

5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Drum Brakes
 

Chevrolet C60



5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel Bore: 1.75 In.
w/Drum Brakes

1 Per Vehicle

1986

 

1986

 
Chevrolet C60

14L L6 Diesel Turbo,
4.8L L6 Gas OHV
1
 
Bore: 1.75 In.
w/Drum Brakes
 

Chevrolet C60



14L L6 Diesel Turbo,
4.8L L6 Gas OHV Bore: 1.75 In.
w/Drum Brakes

1 Per Vehicle

1985

 

1985

 
Chevrolet C60

7.0L V8 Gas
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
 

Chevrolet C60



7.0L V8 Gas Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle

1 Per Vehicle

1985

 

1984

 

1983

 

1985

 

1984

 

1983

 
Chevrolet C60

10.4L V8 Diesel,
4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
 

Chevrolet C60



10.4L V8 Diesel,
4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle

1 Per Vehicle

1983

 

1983

 
Chevrolet C60

6.1L L6 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
 

Chevrolet C60



6.1L L6 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle

1 Per Vehicle

1982

 

1981

 

1982

 

1981

 
Chevrolet C60

10.4L V8 Diesel,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System
 

Chevrolet C60



10.4L V8 Diesel,
8.2L V8 Diesel Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System

1 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
Chevrolet C60

4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas
1
 
Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System
 

Chevrolet C60



4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System

1 Per Vehicle

1985

 

1984

 

1983

 

1985

 

1984

 

1983

 
Chevrolet C70

10.4L V8 Diesel,
10.4L V8 Diesel Turbo,
6.1L L6 Diesel Turbo,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
w/Hydraulic Booster
 

Chevrolet C70



10.4L V8 Diesel,
10.4L V8 Diesel Turbo,
6.1L L6 Diesel Turbo,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
w/Hydraulic Booster

1 Per Vehicle

1982

 

1982

 
Chevrolet C70

6.1L L6 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

Chevrolet C70



6.1L L6 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1982

 

1981

 

1982

 

1981

 
Chevrolet C70

10.4L V8 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

Chevrolet C70



10.4L V8 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
Chevrolet C70

10.4L V8 Diesel,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo,
9.1L V8 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

Chevrolet C70



10.4L V8 Diesel,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo,
9.1L V8 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1980

 

1980

 
Chevrolet C70

7.4L V8 Gas OHV
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

Chevrolet C70



7.4L V8 Gas OHV Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1984

 

1983

 

1982

 

1981

 

1980

 

1984

 

1983

 

1982

 

1981

 

1980

 
Chevrolet P40

4.8L L6 Gas OHV
1
 
Bore: 1.75 In.
w/Dual Hydraulic System
w/Power Brakes
 

Chevrolet P40



4.8L L6 Gas OHV Bore: 1.75 In.
w/Dual Hydraulic System
w/Power Brakes

1 Per Vehicle

1984

 

1984

 
Chevrolet P60

5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Disc Brakes
w/F050 Front Axle
1st Design
 

Chevrolet P60



5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel Bore: 1.75 In.
w/Disc Brakes
w/F050 Front Axle
1st Design

1 Per Vehicle

1984

 

1984

 
Chevrolet P60

5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Drum Brakes
1st Design
 

Chevrolet P60



5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel Bore: 1.75 In.
w/Drum Brakes
1st Design

1 Per Vehicle

1987

 

1986

 

1985

 

1984

 

1983

 

1987

 

1986

 

1985

 

1984

 

1983

 
GMC C5000

4.8L L6 Gas OHV,
5.7L V8 Gas
1
 
Bore: 1.75 In.
w/Drum Brakes
 

GMC C5000



4.8L L6 Gas OHV,
5.7L V8 Gas Bore: 1.75 In.
w/Drum Brakes

1 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
GMC C5000

4.8L L6 Gas OHV,
5.7L V8 Gas
1
 
Bore: 1.75 In.
Exc. Wagner FF52750
w/Drum Brakes
w/Dual Hydraulic System
 

GMC C5000



4.8L L6 Gas OHV,
5.7L V8 Gas Bore: 1.75 In.
Exc. Wagner FF52750
w/Drum Brakes
w/Dual Hydraulic System

1 Per Vehicle

1987

 

1986

 

1987

 

1986

 
GMC C6000

5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Drum Brakes
 

GMC C6000



5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel Bore: 1.75 In.
w/Drum Brakes

1 Per Vehicle

1986

 

1986

 
GMC C6000

4.8L L6 Gas OHV
1
 
Bore: 1.75 In.
w/Drum Brakes
 

GMC C6000



4.8L L6 Gas OHV Bore: 1.75 In.
w/Drum Brakes

1 Per Vehicle

1985

 

1985

 
GMC C6000

14L L6 Diesel Turbo,
7.0L V8 Gas
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
 

GMC C6000



14L L6 Diesel Turbo,
7.0L V8 Gas Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle

1 Per Vehicle

1985

 

1984

 

1983

 

1985

 

1984

 

1983

 
GMC C6000

4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
 

GMC C6000



4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas,
8.2L V8 Diesel Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle

1 Per Vehicle

1984

 

1983

 

1984

 

1983

 
GMC C6000

10.4L V8 Diesel
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
 

GMC C6000



10.4L V8 Diesel Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle

1 Per Vehicle

1982

 

1981

 

1982

 

1981

 
GMC C6000

10.4L V8 Diesel,
8.2L V8 Diesel
1
 
Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System
 

GMC C6000



10.4L V8 Diesel,
8.2L V8 Diesel Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System

1 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
GMC C6000

4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas
1
 
Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System
 

GMC C6000



4.8L L6 Gas OHV,
5.7L V8 Gas,
6L V8 Gas Bore: 1.75 In.
w/Bendix Booster
w/Drum Brakes
w/Dual Hydraulic System

1 Per Vehicle

1985

 

1984

 

1983

 

1985

 

1984

 

1983

 
GMC C7000

10.4L V8 Diesel,
10.4L V8 Diesel Turbo,
6.1L L6 Diesel Turbo,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
w/Hydraulic Booster
 

GMC C7000



10.4L V8 Diesel,
10.4L V8 Diesel Turbo,
6.1L L6 Diesel Turbo,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/F050 Front Axle
w/Hydraulic Booster

1 Per Vehicle

1982

 

1982

 
GMC C7000

6.1L L6 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

GMC C7000



6.1L L6 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1982

 

1981

 

1982

 

1981

 
GMC C7000

10.4L V8 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

GMC C7000



10.4L V8 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
GMC C7000

10.4L V8 Diesel,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo,
9.1L V8 Diesel Turbo
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

GMC C7000



10.4L V8 Diesel,
6L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo,
9.1L V8 Diesel Turbo Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle

1980

 

1980

 
GMC C7000

7.4L V8 Gas OHV
1
 
Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster
 

GMC C7000



7.4L V8 Gas OHV Bore: 1.75 In.
w/Drum Brakes
w/Dual Hydraulic System
w/Hydraulic Booster

1 Per Vehicle