Dorman - First Stop Brake Master Cylinder P/N:M631007

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$123.99
MPN: M631007
UPC: 885484896819
Item Package Quantity: 1
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Dorman - First Stop Brake Master Cylinder P/N:M631007
Dorman - First Stop Brake Master Cylinder P/N:M631007
$123.99

Generate the hydraulic pressure that operates the brakes with the Dorman – First Stop Brake Master Cylinder M631007. It drops in as a direct-fit replacement for the 2016-2019 Honda Civic [All], converting the force from your brake pedal into the hydraulic pressure that actuates the brake system.

  • 100% new: built entirely from new materials, not remanufactured, and made to meet rigorous SAE International standards.
  • Aluminum housing: constructed to match the casting material of the original part for comparable performance, with a 0.875 in bore diameter.
  • EPDM rubber components: a high-quality EPDM compound resists glycol-based brake fluid.
  • Two outlets: this single-reservoir-type cylinder has two brake-line outlets with an M12 x 1.0 secondary/rearward outlet thread and two mounting holes.

If a leaking or failing master cylinder is the cause of a sinking or spongy brake pedal, this unit replaces it; diagnose the cause before replacing. The reservoir, master cylinder cap, push rod, sensor, bleeder hoses, mounting hardware, mounting bracket, and brake booster are not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.

Interchange: 100-4014 · 1004014 · 130.40095 · 355-59069 · 35559069 · 46100TBAA01 · NM55653
Manufacturer part number M631007.

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

100-4014, 130.40095, 355-59069, 46100TBAA01, NM55653

Frequently Asked Questions

What vehicle does this master cylinder fit?

It is a direct-fit replacement for the 2016-2019 Honda Civic (All engines). Check the Buyer's Guide tab to confirm it matches your specific vehicle.

What does a brake master cylinder do?

It converts the force from your brake pedal into hydraulic pressure that actuates the brake system.

Is a reservoir, cap, or push rod included?

No. The reservoir, cap, push rod, sensor, bleeder hoses, mounting hardware, mounting bracket, and brake booster are not included with this master cylinder.

What is this master cylinder made of?

An aluminum housing constructed to match the original part's casting material, with EPDM rubber components that resist glycol-based brake fluid. It has a 0.875 in bore diameter.

What are signs my master cylinder may need replacing?

A sinking or spongy brake pedal, loss of hydraulic pressure, or brake fluid leaks may be signs. Diagnose the cause before replacing, as these symptoms can have other causes.