Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
![Brake Master Cylinder with Dual Reservoir for Disc/Drum or Drum/Drum Applications [GM Universal Mounting]](https://www.jegs.com/images/mini_750/500/555/555-631237.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-631237
Brake Master Cylinder with Dual Reservoir for Disc/Drum or Drum/Drum Applications [GM Universal Mounting]
$7699$84.99You Save$8.00
9 left in stock
Ships Today
Lowest Price GuaranteeGM Universal Cast Iron Brake Master Cylinders
Brake Master CylinderGM Universal Mounting Disc/Drum or Drum/Drum Cast Iron 1 in. Bore Dual 3/8 in.-24 Ports on Left/Driver & Right/Passenger Sides Includes Shallow Bore Adapter for Power Brake Applications
JEGS 555-631237 GM Universal Brake Master Cylinder
This master cylinder is designed for disc front and drum rear brakes or drum front and drum rear brakes. It can be used on power or manual brake systems and includes a removable shallow bore adapter that is removed for use with manual brake applications.
JEGS 555-631237 GM Universal Brake Master Cylinder Features:
- GM Style Universal Mount 3 3/8 in. Bolt Pattern
- 1 in. Bore Dual Reservoir
- Dual 3/8 in.-24 Ports on Both Sides for use with many different GM Vehicle applications
- Can be used for power and non-power brake applications
- Zinc Plated Cap
Note: If you are you are installing this master cylinder on a drum/drum application you will also need a proportioning valve. We recommend JEGS 555-63022
Part TypeMaster Cylinder
BrandJEGS
Package Height5.2
Package Width5.3
Package Length10.0
Weight10.15 PG
Part CategoryReplacement Parts
Port Quantity4
Hardware IncludedNo
Mounting Flange Center To Center Distance (In.)3.375
Adapters IncludedShallow Bore Adapter
Master Cylinder Bore Diameter1
Rear Brake TypeDrum
Forward Outlet Size3/8-24 IF (Inverted Flare)
New Or RemanufacturedNew
Brake SystemManual or Power
Master Cylinder MaterialCast Iron
Pushrod IncludedNo
Front Brake TypeDisc or Drum
Part FitmentSemi Universal
Rearward Outlet Size3/8-24 IF (Inverted Flare)
Vendor Part NumberMC1322H
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Zinc Brake Line Coil Kit [3/16 in. x 25 ft.]](https://www.jegs.com/images/mini_200/500/555/555-63030.jpg)
JEGS
Tubing Straightener For 3/16" to 1/2" O.D. Tubing
Part Number : 555-80082
$15699$172.99
You Save$16.00
![Pro-Style Small Tubing Bender [ Bends Up to 90 degree Angles]](https://www.jegs.com/images/mini_200/500/555/555-80086.jpg)
JEGS
Pro-Style Small Tubing Bender [ Bends Up to 90 degree Angles]
Part Number : 555-80086
$1299$13.99
You Save$1.00
![Penetrating Oil [11 oz. Aerosol Can]](https://www.jegs.com/images/mini_200/600/639/639-11043.jpg)
![Brake and Parts Cleaner [14 oz. Aerosol Can]](https://www.jegs.com/images/mini_200/500/555/555-72312.jpg)
![Fender Cover with Pocket [23 in. W x 31 1/2 in. L]](https://www.jegs.com/images/mini_200/500/555/555-65010.jpg)
JEGS
Fender Cover with Pocket [23 in. W x 31 1/2 in. L]
Part Number : 555-65010
$1499$16.99
You Save$2.00
![Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-81156.jpg)
JEGS
Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]
Part Number : 555-81156
$9099$111.99
You Save$21.00
REPLACEMENT PARTS
![Master Cylinder Pushrod Adapter [0.542 in. Diameter]](https://www.jegs.com/images/mini_200/500/555/555-631494.jpg)
JEGS
Master Cylinder Pushrod Adapter [0.542 in. Diameter]
Part Number : 555-631494
$1299$13.99
You Save$1.00
JEGS
Part Number : 555-631494
$1299$13.99
You Save$1.00
Some parts are not legal for use in California or other states with similar laws / regulations
