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  2. Auto Parts
  3. Brake System
  4. Brake Hydraulics
  5. Brake Master Cylinder
  6. Dorman M80903

Dorman M80903 Brake Master Cylinder

Dorman M80903 Brake Master Cylinder Image 1
Dorman M80903 Brake Master Cylinder Image 2
Dorman M80903 Brake Master Cylinder Image 3
Dorman M80903 Brake Master Cylinder Image 4
Dorman M80903 Brake Master Cylinder

Dorman
Brand:Dorman
Part Number: M80903
UPC: 00082702401941
Weight: 8.62 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the Dorman M80903 Brake Master Cylinder for your vehicle. Buy now and secure your purchase online!

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 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
A1 Cardone #:
10-1525
ACDelco #:
18M30
Aimco #:
M900160
Autospecialty #:
M81015
Bendix #:
11525
Cardone Select #:
13-1525
Centric Parts #:
130.61015
Centric Parts #:
131.61015
Coni-Seal #:
MC80903
Ford #:
D30Z2140A
Ford #:
D3AZ2140A
Ford #:
D60Z2140A
Ford #:
D6AZ2140A
General Motors #:
2622523
Lusac #:
80903
MPA #:
M1525
MPA #:
M1603
MPA #:
NM1525
MPA #:
NM1603
Raybestos Brake #:
2536397
Raybestos Brake #:
MC36397
Wagner Brake #:
F80903
Wagner Brake #:
MC80903
Country of Origin:
CN

Select a vehicle to narrow Dorman M80903 Brake Master Cylinder fitment info!

Last Updated: 09/22/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1974

 

1973

 

1974

 

1973

 
Ford Country Sedan

4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Country Sedan



4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Ford Country Sedan

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Country Sedan



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Ford Country Squire

4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Country Squire



4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Ford Country Squire

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Country Squire



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1977

 

1977

 
Ford Custom 500

5.8L V8 Gas OHV,
6.6L V8 Gas OHV
1
 
Rear Drum
Hardtop
 

Ford Custom 500



5.8L V8 Gas OHV,
6.6L V8 Gas OHV Rear Drum
Hardtop

1 Per Vehicle

1977

 

1977

 
Ford Custom 500

6.6L V8 Gas OHV
1
 
From 5/02/77
Rear Drum
Wagon
 

Ford Custom 500



6.6L V8 Gas OHV From 5/02/77
Rear Drum
Wagon

1 Per Vehicle

1976

 

1976

 
Ford Custom 500

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
To 1/01/76
Power Brakes
 

Ford Custom 500



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
To 1/01/76
Power Brakes

1 Per Vehicle

1975

 

1975

 
Ford Custom 500

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford Custom 500



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Ford Custom 500

5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Custom 500



5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Ford Custom 500

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Custom 500



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Ford Elite

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford Elite



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Ford Galaxie 500

5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Galaxie 500



5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Ford Galaxie 500

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Galaxie 500



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Ford Gran Torino

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford Gran Torino



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1978

 

1978

 
Ford LTD

5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
wo/Police Package
Rear Drum
Hardtop
 

Ford LTD



5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
wo/Police Package
Rear Drum
Hardtop

1 Per Vehicle

1977

 

1977

 
Ford LTD

5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
From 5/02/77
Rear Drum
Hardtop
 

Ford LTD



5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
From 5/02/77
Rear Drum
Hardtop

1 Per Vehicle

1976

 

1976

 
Ford LTD

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
To 1/01/76
Rear Drum
Hardtop
 

Ford LTD



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
To 1/01/76
Rear Drum
Hardtop

1 Per Vehicle

1976

 

1976

 
Ford LTD

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
To 1/01/76
Rear Drum
Wagon
 

Ford LTD



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
To 1/01/76
Rear Drum
Wagon

1 Per Vehicle

1975

 

1975

 
Ford LTD

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford LTD



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Ford LTD

5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford LTD



5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Ford LTD

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford LTD



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford LTD II

5.0L V8 Gas OHV,
5.8L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford LTD II



5.0L V8 Gas OHV,
5.8L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford LTD II

6.6L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford LTD II



6.6L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford Ranchero

5.0L V8 Gas OHV
1
 
Bore: 1 In.
 

Ford Ranchero



5.0L V8 Gas OHV Bore: 1 In.

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1975

 

1979

 

1978

 

1977

 

1976

 

1975

 
Ford Ranchero

5.8L V8 Gas OHV
1
 
Bore: 1 In.
 

Ford Ranchero



5.8L V8 Gas OHV Bore: 1 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
Ford Ranchero

6.6L V8 Gas OHV
1
 
Bore: 1 In.
 

Ford Ranchero



6.6L V8 Gas OHV Bore: 1 In.

1 Per Vehicle

1977

 

1976

 

1975

 

1977

 

1976

 

1975

 
Ford Ranchero

7.5L V8 Gas OHV
1
 
Bore: 1 In.
 

Ford Ranchero



7.5L V8 Gas OHV Bore: 1 In.

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford Thunderbird

5.0L V8 Gas OHV,
5.8L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford Thunderbird



5.0L V8 Gas OHV,
5.8L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford Thunderbird

6.6L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford Thunderbird



6.6L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1976

 

1976

 
Ford Thunderbird

7.5L V8 Gas OHV
1
 
Bore: 1 In.
To 1/01/76
Power Brakes
 

Ford Thunderbird



7.5L V8 Gas OHV Bore: 1 In.
To 1/01/76
Power Brakes

1 Per Vehicle

1975

 

1975

 
Ford Thunderbird

7.5L V8 Gas OHV
1
 
Bore: 1 In.
Rear Drum
 

Ford Thunderbird



7.5L V8 Gas OHV Bore: 1 In.
Rear Drum

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Ford Thunderbird

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Thunderbird



6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Ford Thunderbird

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Ford Thunderbird



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Ford Torino

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Ford Torino



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1974

 

1974

 
Lincoln Continental

7.5L V8 Gas OHV
1
 
Bore: 1 In.
To 4/08/74
w/Power Brakes
 

Lincoln Continental



7.5L V8 Gas OHV Bore: 1 In.
To 4/08/74
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Lincoln Continental

7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Lincoln Continental



7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Mercury Colony Park

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Colony Park



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Mercury Colony Park

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Colony Park



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Mercury Cougar

5.0L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Mercury Cougar



5.0L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1975

 

1979

 

1978

 

1977

 

1976

 

1975

 
Mercury Cougar

5.8L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Mercury Cougar



5.8L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
Mercury Cougar

6.6L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Mercury Cougar



6.6L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Mercury Cougar

7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Mercury Cougar



7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1974

 

1974

 
Mercury Cougar

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Cougar



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1978

 

1978

 
Mercury Grand Marquis

5.8L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
Rear Drum
 

Mercury Grand Marquis



5.8L V8 Gas OHV Bore: 1 In.
Power Brakes
Rear Drum

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
Mercury Grand Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
Rear Drum
 

Mercury Grand Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes
Rear Drum

1 Per Vehicle

1978

 

1978

 
Mercury Marquis

5.8L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
Rear Drum
 

Mercury Marquis



5.8L V8 Gas OHV Bore: 1 In.
Power Brakes
Rear Drum

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Mercury Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
Rear Drum
 

Mercury Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes
Rear Drum

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Mercury Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
Rear Drum
Hardtop
 

Mercury Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes
Rear Drum
Hardtop

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Mercury Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
Rear Drum
Wagon
 

Mercury Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes
Rear Drum
Wagon

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Mercury Marquis

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Marquis



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Mercury Marquis

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Marquis



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Mercury Montego

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
Power Brakes
 

Mercury Montego



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Mercury Montego

4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Montego



4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Mercury Montego

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Montego



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Mercury Monterey

5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Monterey



5.8L V8 Gas OHV,
6.6L V8 Gas OHV,
7.5L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle

1973

 

1973

 
Mercury Monterey

7.0L V8 Gas OHV
1
 
Bore: 1 In.
w/Power Brakes
 

Mercury Monterey



7.0L V8 Gas OHV Bore: 1 In.
w/Power Brakes

1 Per Vehicle