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![Brake Master Cylinder, Cast-Iron with Black Finish [1962-1976 Mopar Mounting]](https://www.jegs.com/images/mini_750/500/555/555-631151.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-631151
Brake Master Cylinder, Cast-Iron with Black Finish [1962-1976 Mopar Mounting]
$9899$114.99You Save$16.00
Ships on 09/15/2026
Lowest Price GuaranteeBrake Master Cylinder
Brake Master Cylinder1962-1976 Mopar Disc/Drum Applications Bendix Style 1 1/8 in. Bore 9/16 in.-20 & 1/2 in.-20 Ports Cast-Iron Black Finish
JEGS 555- 631151 Brake Master Cylinder Notes:
- Includes cast finish firewall boot & 4 bolts
- Utilizes 10 lbs. internal residual valve (rear brakes)
- Matches original 2225621 (correct lid inscription)
- Hemi applications from 1967-1970.
- Bolts for the firewall will already be pre-installed. You must tap out the bolts and remove the boot from the master cylinder's back if you plan to use it with power brakes.
Replacement Brake Parts For You When You Need Them!
Rotors, calipers, hoses, and other brake parts need to be replaced on a regular basis. Keep your brake system maintained with JEGS Replacement Brake Parts.
Part TypeMaster Cylinder
Product LineJEGS Brake Conversion Kit Replacement Parts
BrandJEGS
Package Height8.0
Package Width8.0
Package Length14.0
Weight8.0 PG
Part CategoryPerformance Parts
Master Cylinder Cap IncludedYes
MaterialCast Iron
Part FitmentSemi Universal
Reservoir IncludedYes
Bore Diameter1.125 in (28.575 mm)
FinishBlack
Vendor Part NumberMC5621
Package Qty1
Package TypeEA
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