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Vehicle Info NeededLEED BRAKESPART NUMBER: 633-1M1A1
1962-1974 GM Vehicles Power Brake Master Cylinder & Booster Kit
$36899$409.99You Save$41.00
Ships on Sep 14, 2026
Lowest Price GuaranteeGM Zinc 8 in. Dual Boosters
Power Brake Master Cylinder & Booster Kit1962-1974 GM Vehicles Cast Iron 1 1/8 in. Master Cylinder Zinc 8 in. Dual Booster Zinc Disc/Drum Master Cylinder
LEED Brakes 1M1A1 Features:
New 8" Dual Diaphragm zinc plated power brake booster, master cylinder & disc/drum proportioning valve combo. This 8" power booster is hand polished before a yellow zinc finish is applied for a top quality finish. The top quality power brake booster is designed mount directly to your factory firewall. Also included in this kits is a new 1-1/8" bore master cylinder and proportioning valve equipped to work with front disc rear drum applications.- New unit not remanufactured
- Direct bolt in replacement for factory power brake booster
- Includes brackets and pushrod
Part TypeBrake Master Cylinder and Booster Assembly
BrandLEED BRAKES
Package Height12.0
Package Width12.1
Package Length19.0
Weight21.02 PG
Part CategoryPerformance Parts
Brake Booster FinishZinc
Bracket IncludedYes
Brake Booster TypeDual Diaphragm
Master Cylinder FinishNatural
Housing MaterialSteel
Brake Booster IncludedYes
Master Cylinder Bore Size1-1/8 in
Mounting Hardware IncludedNo
Master Cylinder Port Quantity2
Brake Booster Diameter8 in.
Booster Housing Diameter8 in.
Bleeder Hoses IncludedYes
Brake Pedal Pushrod IncludedYes
Master Cylinder MaterialCast Iron
Master Cylinder Cap IncludedYes
Booster Diaphragm TypeDual
Brake Lines IncludedFrom Master Cylinder to Valve
Booster TypeVacuum
Master Cylinder IncludedYes
Part FitmentSemi Universal
Vendor Part Number1M1A1
Package Qty1
Package TypeEA
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