Dorman - First Stop Brake Master Cylinder P/N:M39968

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$129.99
MPN: M39968
Item Package Quantity: 1
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Dorman - First Stop Brake Master Cylinder P/N:M39968
Dorman - First Stop Brake Master Cylinder P/N:M39968
$129.99

Convert brake-pedal force into the hydraulic pressure that actuates the braking system with the Dorman - First Stop Brake Master Cylinder M39968. It installs as a direct-fit replacement for the 1990-1991 Honda Civic [All], and Dorman precision-engineers it to match the design, function, and performance of the original master cylinder on the listed application. If a worn or leaking master cylinder is behind a soft or sinking pedal, this replaces it.

  • 100% new: made entirely of new materials, not remanufactured.
  • Aluminum housing: the cylinder housing is built to match the casting material of the original part for similar performance.
  • Durable EPDM rubber components: chosen for resistance to glycol-based brake fluid.
  • Built to standard: made to meet SAE International specifications, and it includes a reservoir and a sensor.

Key specs: 0.938 in bore diameter, two outlets, secondary/rearward outlet size M10 x 1.0, and a primary outlet thread pitch of 1 mm. Country of origin: Taiwan. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.

Interchange: 18M520 · 783-08016 · 78308016 · 83-08016 · 8308016 · M900727 · 100-1316 · 1001316 · M-54016 · M54016 · 072-8573 · 0728573 · 13255 · 13-2517 · 132517 · 11-2517 · 112517 · 130.40016 · 131.40016 · 131.40017 · MC250750 · 355-59011 · 35559011 · 46100SH4A11 · M52517 · NM52517 · MC39968 · F120595 · MC120595. Manufacturer part number M39968.

This part cross-references / interchanges with the following part numbers:

18M520, 783-08016, 83-08016, M900727, 100-1316, M-54016, 072-8573, 13255, 13-2517, 11-2517, 130.40016, 131.40016, 131.40017, MC250750, 355-59011, 46100SH4A11, M52517, NM52517, MC39968, F120595, MC120595

Frequently Asked Questions

What does the M39968 master cylinder do?

It converts the force from the brake pedal into hydraulic pressure that actuates the braking system. If a failed or leaking master cylinder is the cause of your brake issue, this replaces it.

Does it include a reservoir and sensor?

Yes. Per the catalog, this master cylinder includes a reservoir and a sensor. The package contents are the master cylinder.

Is mounting hardware included?

No, mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.

What vehicles does it fit?

It is a direct-fit replacement for the 1990-1991 Honda Civic [All]. Check the Buyer's Guide tab to confirm fitment for your vehicle.

What is this master cylinder made of?

It is aluminum, with the housing built to match the casting material of the original part, and it uses high-quality EPDM rubber components for resistance to glycol-based brake fluid.