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View All JEGS Master Cylinders & Power Brake Boosters

JEGS Chrome Aluminum Master Cylinder GM Universal Mounting

Part Number: 555-631001

FREE Shipping

Ships

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Lowest Price Guarantee

$151.94

Lowest Price Guarantee

JEGS Chrome Aluminum Master Cylinder GM Universal Mounting $151.94

Chrome Aluminum Master Cylinder

GM Universal Mounting

1-1/8" Bore

(1) 9/16"-18 & (1) 1/2"-20 Port on Driver's Side
For:

Non-Power Assisted Disc/Drum Applications

Power Assisted Drum/Drum, Disc/Drum & Disc/Disc Applications

Details
Overview
Vehicle Fitment
Reviews
Q & A

JEGS 631001 Details

Cast Aluminum Master Cylinders

This dual reservoir master cylinder is machined from cast, aircraft quality, aluminum into a smooth and stylish unit. We then fully polish each one and finish it with high luster chrome to provide the finishing touch to any engine compartment. Features GM universal mounting with one 9/16" & one 1/2" port on driver's side.

Specifications:

Reservoir Included

Yes

Master Cylinder Cap Included

Yes

Master Cylinder Material

Aluminum

Brake Booster Included

Pushrod Included

Mounting Hole Quantity

2 holes

Quantity

Sold individually

Reservoir Material

Aluminum

Master Cylinder Bore Size (in.)

1.125

Master Cylinder Finish

Chrome

Bowl Design

Dual

Hardware Included

Mounting Brackets Included

Remote Reservoir

Front Brake Type

Various - Application Specific

Master Cylinder Stroke (in.)

N/A

Mounting Flange Center to Center Distance (in.)

N/A

Shipping Weight:

5.50

Package Height:

10.200

Package Width:

5.300

Package Depth:

5.300

Manufacturer's Part Number:

MC2912ACH

Cast Aluminum Master Cylinders
JEGS cast aluminum master cylinders feature either a high luster chrome or a durable black powder coat finish with GM universal mounting.

Power Brake Boosters
JEGS power brake boosters feature either a durable black powder coat or chrome finish and are available in combinations for every application. A pedal rod extension kit and a brake booster bracket are recommended (sold separately) when converting from manual to power brakes.

Master Cylinder and Booster Kits
JEGS 1 1/8 in. master cylinder and power brake booster kits feature a high luster chrome or black powder coat finish and are available in a variety of combinations for every application.

Brake Booster Brackets
JEGS polished stainless steel or durable black powder coat brake booster brackets are designed to convert the firewall stud mounting pattern from a manual master cylinder to the power brake booster pattern.

Does JEGS 631001 fit your vehicle?

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Filter By
Aspiration

N T

1979 GMC C2500 PICKUP

Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1960 CHEVROLET BISCAYNE

Liter: 3.9
SubModel: BASE
CUI: 236
EngineType: L6 ( 3.9 L / 236 )

1990-1993 CHEVROLET K2500 PICKUP

EngineType: ALL
SubModel: BASE

1961-1962 CHEVROLET C30 PICKUP

CC: 5704
Liter: 5.7
SubModel: BASE
CUI: 348
EngineType: V8 ( 5.7 L / 348 )

1969 GMC C35/C3500 PICKUP

CC: 5031
Liter: 5.0
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1971 GMC C1500 PICKUP

CC: 4097
Liter: 4.1
Aspiration: N
SubModel: BASE
Engine Vin: L
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1969 CHEVROLET NOVA

CC: 3769
Liter: 3.8
SubModel: BASE
CUI: 230
EngineType: L6 ( 3.8 L / 230 )

1972 CHEVROLET C10 PICKUP

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1961-1962 CHEVROLET C20 PICKUP

CC: 5704
Liter: 5.7
SubModel: BASE
CUI: 348
EngineType: V8 ( 5.7 L / 348 )

1998-2000 CHEVROLET K2500 PICKUP

EngineType: ALL
SubModel: BASE

1961-1966 CHEVROLET K10 PICKUP

CC: 4638
Liter: 4.6
SubModel: BASE
CUI: 283
EngineType: V8 ( 4.6 L / 283 )

1961-1962 CHEVROLET BEL AIR

CC: 3852
Liter: 3.8
SubModel: BASE
CUI: 235
EngineType: L6 ( 3.8 L / 235 )

1974 GMC K35/K3500 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1968-1969 CHEVROLET CHEVELLE

CC: 6489
Liter: 6.5
SubModel: CONCOURS
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1960-1965 CHEVROLET C10 PANEL

EngineType: ALL
SubModel: ALL

1969 GMC K1500 PICKUP

CC: 5031
Liter: 5.0
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1969 CHEVROLET CHEVELLE

CC: 5736
Liter: 5.7
SubModel: MALIBU
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1955 GMC TRUCK

CC: 4720
Liter: 4.7
SubModel: BASE
CUI: 288
EngineType: V8 ( 4.7 L / 288 )

1971 CHEVROLET C20 PICKUP

CC: 4097
Liter: 4.1
Aspiration: N
SubModel: BASE
Engine Vin: C
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1966-1968 GMC C15/C1500 PICKUP

Liter: 5.0
SubModel: BASE
CUI: 305
EngineType: V6 ( 5.0 L / 305 )

1968-1969 CHEVROLET CHEVELLE

CC: 3769
Liter: 3.8
SubModel: 300 DELUXE
CUI: 230
EngineType: L6 ( 3.8 L / 230 )

1969 CHEVROLET CHEVELLE

CC: 4098
Liter: 4.1
SubModel: GREENBRIER
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1971 GMC C35/C3500 PICKUP

CC: 4097
Liter: 4.1
Aspiration: N
SubModel: BASE
Engine Vin: L
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1966 CHEVROLET C30 PICKUP

Liter: 6.0
SubModel: BASE
CUI: 366
EngineType: V8 ( 6.0 L / 366 )

1966 CHEVROLET C30 PICKUP

CC: 4098
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1973-1974 GMC C25/C2500 PICKUP

CC: 7441
Liter: 7.4
Aspiration: N
SubModel: BASE
Engine Vin: Z
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1970 CHEVROLET K20 PICKUP

CC: 5031
Liter: 5.0
Aspiration: N
SubModel: BASE
Engine Vin: A
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1954-1955 GMC TRUCK

CC: 4065
Liter: 4.1
SubModel: BASE
CUI: 248
EngineType: L6 ( 4.1 L / 248 )

1979-1980 GMC K2500 PICKUP

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1969-1970 CHEVROLET K30 PICKUP

CC: 5736
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1971-1972 GMC K35/K3500 PICKUP

CC: 5736
Liter: 5.7
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1988-1989 CHEVROLET C2500 PICKUP

Liter: 4.3
SubModel: CHEYENNE
CUI: 262
EngineType: V6 ( 4.3 L / 262 )

1967 CHEVROLET CHEVY II

CC: 4098
Liter: 4.1
SubModel: NOVA
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1967 CHEVROLET CAPRICE

CC: 4638
Liter: 4.6
SubModel: BASE
CUI: 283
EngineType: V8 ( 4.6 L / 283 )

1974 GMC K1500 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1981-1986 GMC K2500 PICKUP

EngineType: ALL
SubModel: BASE

1968 GMC K15/K1500 PICKUP

Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1976 CHEVROLET C10 PICKUP

EngineType: ALL
SubModel: BASE

1967 CHEVROLET C10 PICKUP

CC: 4098
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1972 CHEVROLET C10 PICKUP

CC: 4098
Liter: 4.1
Aspiration: N
SubModel: BASE
Engine Vin: D
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1981-1986 GMC K3500 PICKUP

EngineType: ALL
SubModel: BASE

1968 GMC C25/C2500 PICKUP

CC: 4097
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1955-1957 CHEVROLET TWO-TEN SERIES

CC: 4343
Liter: 4.3
SubModel: BASE
CUI: 265
EngineType: V8 ( 4.3 L / 265 )

1969 CHEVROLET CHEVELLE

CC: 5736
Liter: 5.7
SubModel: CONCOURS
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973-1974 GMC K35/K3500 PICKUP

CC: 4098
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1961 CHEVROLET IMPALA

CC: 6704
Liter: 6.7
SubModel: BASE
CUI: 409
EngineType: V8 ( 6.7 L / 409 )

1968 CHEVROLET K30 PICKUP

Liter: 5.4
SubModel: BASE
CUI: 327
EngineType: V8 ( 5.4 L / 327 )

1971 GMC K1500 PICKUP

CC: 4097
Liter: 4.1
Aspiration: N
SubModel: BASE
Engine Vin: L
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1994 CHEVROLET C2500 PICKUP

Liter: 4.3
SubModel: BASE
CUI: 262
EngineType: V6 ( 4.3 L / 262 )

1970 CHEVROLET K20 PICKUP

CC: 4097
Liter: 4.1
Aspiration: N
SubModel: BASE
Engine Vin: N
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1973-1974 GMC C25/C2500 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1970 CHEVROLET C10 PICKUP

CC: 5031
Liter: 5.0
Aspiration: N
SubModel: BASE
Engine Vin: A
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1968 CHEVROLET CHEVELLE

CC: 3769
Liter: 3.8
SubModel: CONCOURS
CUI: 230
EngineType: L6 ( 3.8 L / 230 )

1963 CHEVROLET BEL AIR

CC: 6997
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1974 CHEVROLET C10 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1967-1968 GMC C25/C2500 PICKUP

Liter: 5.4
SubModel: BASE
CUI: 327
EngineType: V8 ( 5.4 L / 327 )

1967 GMC K1500 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1996 CHEVROLET C1500

EngineType: ALL
SubModel: ALL

1986 GMC K1500 PICKUP

Liter: 5.0
SubModel: BASE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1959-1961 CHEVROLET IMPALA

CC: 5704
Liter: 5.7
SubModel: BASE
CUI: 348
EngineType: V8 ( 5.7 L / 348 )

1964-1966 CHEVROLET C20 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1968 CHEVROLET C20 PICKUP

CC: 5031
Liter: 5.0
SubModel: BASE
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1975-1978 CHEVROLET C20 PICKUP

EngineType: ALL
SubModel: CHEYENNE

1958-1961 CHEVROLET BISCAYNE

CC: 5704
Liter: 5.7
SubModel: BASE
CUI: 348
EngineType: V8 ( 5.7 L / 348 )

1999 CHEVROLET C1500 PICKUP

EngineType: ALL
SubModel: ALL

1967-1969 CHEVROLET BEL AIR

CC: 4098
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1996-1997 CHEVROLET K1500

EngineType: ALL
SubModel: ALL

1968 CHEVROLET C20 PICKUP

CC: 4097
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1972-1973 GMC K35/K3500 PICKUP

CC: 5031
Liter: 5.0
SubModel: BASE
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1979-1982 CHEVROLET K30 PICKUP

EngineType: ALL
SubModel: BASE

1996-1997 CHEVROLET C2500 PICKUP

Liter: 5.0
SubModel: BASE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1972 GMC C35/C3500 PICKUP

CC: 5736
Liter: 5.7
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1969-1970 CHEVROLET K10 PICKUP

CC: 4801
Liter: 4.8
Aspiration: N
SubModel: BASE
Engine Vin: S
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1963 CHEVROLET C20 PICKUP

CC: 4801
Liter: 4.8
SubModel: BASE
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1996-1997 CHEVROLET C2500 PICKUP

Liter: 6.5
Aspiration: T
SubModel: BASE
Engine Vin: F
CUI: 395
EngineType: V8 ( 6.5 L / 395 )

1967 CHEVROLET C30 PICKUP

CC: 4098
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1969 CHEVROLET CHEVELLE

CC: 5031
Liter: 5.0
Aspiration: N
SubModel: CONCOURS ESTATE
Engine Vin: DC
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1972 GMC K1500 PICKUP

CC: 5736
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1972 GMC C1500 PICKUP

CC: 5736
Liter: 5.7
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1994 CHEVROLET C1500 PICKUP

Liter: 6.5
SubModel: BASE
CUI: 395
EngineType: V8 ( 6.5 L / 395 )

1989-1997 GMC C3500 PICKUP

EngineType: ALL
SubModel: SIERRA XC

1988 CHEVROLET R30 PICKUP

EngineType: ALL
SubModel: CHEYENNE

1968-1969 CHEVROLET CHEVELLE

CC: 3769
Liter: 3.8
SubModel: MALIBU
CUI: 230
EngineType: L6 ( 3.8 L / 230 )

1971 GMC C25/C2500 PICKUP

CC: 4097
Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1980 CHEVROLET C10 PICKUP

Liter: 7.4
SubModel: BIG TEN
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1967 CHEVROLET C10 PICKUP

CC: 4638
Liter: 4.6
SubModel: BASE
CUI: 283
EngineType: V8 ( 4.6 L / 283 )

1971 GMC K25/K2500 PICKUP

CC: 5736
Liter: 5.7
Aspiration: N
SubModel: BASE
Engine Vin: A
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1999 CHEVROLET C2500 PICKUP

Liter: 6.5
SubModel: BASE
CUI: 395
EngineType: V8 ( 6.5 L / 395 )

1967 CHEVROLET IMPALA

CC: 4638
Liter: 4.6
SubModel: BASE
CUI: 283
EngineType: V8 ( 4.6 L / 283 )

1988-1989 CHEVROLET K3500 PICKUP

EngineType: ALL
SubModel: CHEYENNE

1980 CHEVROLET C10 PICKUP

CC: 4097
Liter: 4.1
SubModel: BIG TEN
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1969 GMC C35/C3500 PICKUP

CC: 5736
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1966-1968 GMC C15/C1500 PICKUP

Liter: 4.1
SubModel: BASE
CUI: 250
EngineType: L6 ( 4.1 L / 250 )

1969 BUICK SKYLARK

CC: 5736
Liter: 5.7
Aspiration: N
SubModel: CUSTOM
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1974 GMC K1500 PICKUP

CC: 5737
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1968-1972 CHEVROLET C20 PICKUP

CC: 4801
Liter: 4.8
Aspiration: N
SubModel: BASE
Engine Vin: S
CUI: 292
EngineType: L6 ( 4.8 L / 292 )

1981 GMC C1500 PICKUP

Liter: 5.0
Aspiration: N
SubModel: BASE
Engine Vin: G
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1968 CHEVROLET CHEVELLE

Liter: 5.4
SubModel: MALIBU
CUI: 327
EngineType: V8 ( 5.4 L / 327 )

1971 GMC K35/K3500 PICKUP

CC: 6588
Liter: 6.6
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1971 CHEVROLET K20 PICKUP

CC: 5736
Liter: 5.7
Aspiration: N
SubModel: BASE
Engine Vin: E
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1 2 ... 10 >

631001 is rated 5.0 out of 5 by 1.

Rated 5 out of 5 by shane84chevy from Master Cylinder I got this to replace my original M/C for a 84 Chevy truck that I am rebuilding. It has a very nice finish that will match my chrome booster I just received. Love it.

Date published: 2016-02-08

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JEGS Chrome Aluminum Master Cylinder GM Universal Mounting

Part Number: 555-631001

JEGS 631001 Details

Specifications:

Does JEGS 631001 fit your vehicle?

1979 GMC C2500 PICKUP

1960 CHEVROLET BISCAYNE

1990-1993 CHEVROLET K2500 PICKUP

1961-1962 CHEVROLET C30 PICKUP

1969 GMC C35/C3500 PICKUP

1971 GMC C1500 PICKUP

1969 CHEVROLET NOVA

1972 CHEVROLET C10 PICKUP

1961-1962 CHEVROLET C20 PICKUP

1998-2000 CHEVROLET K2500 PICKUP

1961-1966 CHEVROLET K10 PICKUP

1961-1962 CHEVROLET BEL AIR

1974 GMC K35/K3500 PICKUP

1968-1969 CHEVROLET CHEVELLE

1960-1965 CHEVROLET C10 PANEL

1969 GMC K1500 PICKUP

1969 CHEVROLET CHEVELLE

1955 GMC TRUCK

1971 CHEVROLET C20 PICKUP

1966-1968 GMC C15/C1500 PICKUP

1968-1969 CHEVROLET CHEVELLE

1969 CHEVROLET CHEVELLE

1971 GMC C35/C3500 PICKUP

1966 CHEVROLET C30 PICKUP

1966 CHEVROLET C30 PICKUP

1973-1974 GMC C25/C2500 PICKUP

1970 CHEVROLET K20 PICKUP

1954-1955 GMC TRUCK

1979-1980 GMC K2500 PICKUP

1969-1970 CHEVROLET K30 PICKUP

1971-1972 GMC K35/K3500 PICKUP

1988-1989 CHEVROLET C2500 PICKUP

1967 CHEVROLET CHEVY II

1967 CHEVROLET CAPRICE

1974 GMC K1500 PICKUP

1981-1986 GMC K2500 PICKUP

1968 GMC K15/K1500 PICKUP

1976 CHEVROLET C10 PICKUP

1967 CHEVROLET C10 PICKUP

1972 CHEVROLET C10 PICKUP

1981-1986 GMC K3500 PICKUP

1968 GMC C25/C2500 PICKUP

1955-1957 CHEVROLET TWO-TEN SERIES

1969 CHEVROLET CHEVELLE

1973-1974 GMC K35/K3500 PICKUP

1961 CHEVROLET IMPALA

1968 CHEVROLET K30 PICKUP

1971 GMC K1500 PICKUP

1994 CHEVROLET C2500 PICKUP

1970 CHEVROLET K20 PICKUP

1973-1974 GMC C25/C2500 PICKUP

1970 CHEVROLET C10 PICKUP

1968 CHEVROLET CHEVELLE

1963 CHEVROLET BEL AIR

1974 CHEVROLET C10 PICKUP

1967-1968 GMC C25/C2500 PICKUP

1967 GMC K1500 PICKUP

1996 CHEVROLET C1500

1986 GMC K1500 PICKUP

1959-1961 CHEVROLET IMPALA

1964-1966 CHEVROLET C20 PICKUP

1968 CHEVROLET C20 PICKUP

1975-1978 CHEVROLET C20 PICKUP

1958-1961 CHEVROLET BISCAYNE

1999 CHEVROLET C1500 PICKUP

1967-1969 CHEVROLET BEL AIR

1996-1997 CHEVROLET K1500

1968 CHEVROLET C20 PICKUP

1972-1973 GMC K35/K3500 PICKUP

1979-1982 CHEVROLET K30 PICKUP

1996-1997 CHEVROLET C2500 PICKUP

1972 GMC C35/C3500 PICKUP