HomeDorman M631005 Brake Master Cylinder
Part #: M631005

Dorman M631005 Brake Master Cylinder

⚙️ 2 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$115.63Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
Out of Stock
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Honda, Fit
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Brake Master Cylinder for Honda Fit

The Dorman M631005 brake master cylinder is engineered to restore proper brake hydraulics for your Honda Fit. Designed with precision, this aluminum master cylinder ensures consistent brake fluid pressure for safe and responsive braking performance.

  • Compatible with Honda Fit models
  • Master cylinder bore diameter: 0.75 inches
  • Constructed from durable aluminum material
  • Two mounting holes for secure installation
  • Includes one new master cylinder with removable reservoir type
  • Secondary outlet thread diameter: 12 mm (M12 x 1.0)
  • Two outlets for efficient brake fluid distribution

Product Details and Specifications

The Dorman M631005 brake master cylinder is crafted from aluminum, providing a lightweight yet durable component for your vehicle's brake hydraulics system. It features a 0.75-inch bore diameter, which is critical for maintaining proper hydraulic pressure. This master cylinder includes two mounting holes to ensure a secure fit on your Honda Fit. The removable reservoir type allows for easier maintenance and fluid replacement. With two outlets and a secondary outlet thread diameter of M12 x 1.0, this part supports efficient brake fluid flow to the braking system. Note that this product does not include mounting hardware, brake booster, push rod, reservoir, bleeder hoses, sensor, or mounting bracket.

Common Applications and Problem Resolution

  • Restores brake fluid pressure for improved braking response
  • Replaces worn or leaking master cylinders causing brake failure
  • Addresses spongy or unresponsive brake pedal issues
  • Fixes brake fluid leaks from the master cylinder assembly
  • Ensures proper brake hydraulics for safe vehicle operation

Installation Notes and Tips

When installing the Dorman M631005 brake master cylinder on your Honda Fit, ensure the mounting surface is clean and free of debris. Use the two mounting holes to secure the unit firmly. Since mounting hardware is not included, you will need to reuse existing hardware or acquire appropriate fasteners. Bleed the brake system thoroughly after installation to remove air and restore proper hydraulic pressure. Verify that the removable reservoir is properly seated and sealed to prevent leaks.

Quality Assurance and Warranty

Dorman manufactures the M631005 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides corrosion resistance and durability under normal operating conditions. This part is backed by Dorman's quality assurance processes to ensure reliable performance. Please refer to Dorman's official warranty policy for specific coverage details.

BrandDorman
Part NumberM631005
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Master Cylinder Bore Diameter0.75
Brake Booster IncludedNo
Master Cylinder Cap IncludedNo
Master Cylinder MaterialAluminum
Push Rod IncludedNo
Reservoir IncludedNo
Secondary Outlet Thread Diameter12
Bleeder Hoses IncludedNo
Sensor IncludedNo
Mounting Bracket IncludedNo
Number of Outlets2
Package Contents1 new master cylinder
Rearward Outlet SizeM12 x 1.0
Reservoir TypeRemovable

This part fits 2 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2016HondaFitManualN/A
2015HondaFitManualN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

130.4008946100T5RA11

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.