Master Cylinders for Power and Manual Brakes
Master Cylinders for Power and Manual Brakes
Master Cylinders for Power and Manual Brakes
Master Cylinders for Power and Manual Brakes
Master Cylinders for Power and Manual Brakes
Master Cylinders for Power and Manual Brakes
Master Cylinders for Power and Manual Brakes

Master Cylinders for Power and Manual Brakes

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$79.00
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Description

This is a master cylinder for 65-73 Mustang and other Fords, available in several configurations to match different brake systems and booster setups. All master cylinders include fittings for 3/16" tubing.

What's Included:

  • PB-6.1 — Iron master cylinder for disc/drum with power brakes. Ports face fender side. 7-3/16" long from booster mating surface to the end.
  • PB-6.2 — Aluminum/plastic master cylinder for disc/disc brakes with power brakes, fits 65-73 Mustangs. Ports face fender side. 7-3/8" long from booster mating surface to the end.
  • PB-6.3 — Iron master cylinder for disc/drum or drum/drum with power brakes. Ports face engine side. Fits Mustang and F-100 mounting pattern. 7-3/8" long from booster mating surface to the end.
  • PB-6.4 — Iron master cylinder for manual disc/drum brakes only. 7-3/16" long from booster mating surface to the end.
  • PB-6.5 — Aluminum/plastic master cylinder for disc/disc brakes using a hydraulic booster. 7-5/8" long from booster mating surface to the end.
  • PB-6.6 — Aluminum/plastic master cylinder for manual disc/drum brakes, 1.3" stroke. 7-5/8" long from booster mating surface to the end.
Installation Instruction

Installation Instructions

Fitment

A residual valve is needed when using a disc/disc master cylinder with rear drum brakes.

Fits the following vehicles:
1964 Ford Mustang, 1965 Ford Mustang, 1966 Ford Mustang, 1967 Ford Mustang, 1968 Ford Mustang, 1969 Ford Mustang, 1970 Ford Mustang, 1971 Ford Mustang, 1972 Ford Mustang, 1973 Ford Mustang, 1967 Mercury Cougar, 1968 Mercury Cougar, 1969 Mercury Cougar, and 1970 Mercury Cougar

Questions & Answers

Q: Do I need a residual valve with this master cylinder?

If any wheel still uses drum brakes, yes — the drum circuit needs a 10 lb residual valve to keep slight pressure in the wheel cylinders so the shoes don't drag away from the drums. Disc brake circuits should not have a residual valve.

Q: Will it thread onto my stock Mustang brake lines?

Yes, every master cylinder in this listing includes fittings sized for the factory 3/16" brake tubing used on 65-73 Mustangs and other Fords, so no line adapters are needed.

Q: How do I choose between the power and manual brake versions?

Tell us whether you're running a vacuum booster (power) or a direct pedal linkage (manual) when ordering — the pushrod length and bore are matched differently for each, and using the wrong one will throw off pedal feel and travel.

Q: I'm running 4-wheel disc with your PB-6.2 (MGSPB62) master cylinder — do I still need a proportioning valve?

Yes, we still recommend running a proportioning valve even with a dedicated disc/disc master cylinder like the PB-6.2. It lets you fine-tune front-to-rear brake bias for your specific setup (tires, weight, caliper piston sizes) instead of relying on a fixed internal split.