Dorman - First Stop Brake Master Cylinder P/N:M39403
Dorman M39669 brake master cylinder for the 1984-1985 Toyota Van turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder is precision-engineered to follow the design, function and performance of the original master cylinder.
A brake pedal that sinks or feels soft, or brake fluid leaking around the cylinder, can mean the master cylinder is wearing out. These signs alone do not prove the master cylinder is the problem, since a leaking brake line can also give a soft pedal. Have brake problems looked at promptly.
This master cylinder is a direct-fit replacement for the 1984-1985 Toyota Van, which takes one.
Fit and size
Build and materials
One master cylinder. The reservoir, sensor and mounting hardware are not included, so plan on new fasteners, as the old ones may not be reusable.
Interchange: 83-22800 · 100-1673 · M-56800 · 072-8416 · 13-2043 · 11-2043 · 130.44800 · 355-76149
18M376 · M900582 · 12043 · MC507880 · M52043 · 4720128060 · F108555 · MC108555
This part cross-references / interchanges with the following part numbers:
Will the M39669 fit the 1984-1985 Toyota Van?
Yes, Dorman M39669 is listed for the 1984-1985 Toyota Van. This listing is one master cylinder.
Does this Dorman master cylinder come with the reservoir?
No. Dorman M39669 is the master cylinder only; the reservoir, sensor and mounting hardware are not included.
What bore size and outlet thread does this brake master cylinder have?
The bore diameter is 0.938 in. It has two outlets with an M10 x 1.0 thread and a 1 mm pitch.
Can a soft pedal mean a brake master cylinder is worn?
Yes, a pedal that sinks or feels soft, or fluid leaking at the cylinder, can mean it is worn. Have the brakes checked promptly.
Are the rubber components in this master cylinder made for glycol-based brake fluid?
Yes. Dorman M39669 uses EPDM compound for all its rubber components, which resists glycol-based brake fluid.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.