HomeBrake > Brake HydraulicsDorman M631038 Brake Master Cylinder
Part #: M631038

Dorman M631038 Brake Master Cylinder

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⚙️ 38 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Transit-150, Transit-250, Transit-350, Transit-350 HD, Transit, and Transit Custom
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Reliable Brake Master Cylinder for Ford Transit Models

The Dorman M631038 Brake Master Cylinder is engineered to provide consistent hydraulic pressure for your Ford Transit series vehicles. Designed specifically for models including the E-Transit, Transit-150, Transit-250, Transit-350, Transit-350 HD, and Transit Custom, this master cylinder ensures precise brake control and safety.

  • Compatible with Ford E-Transit, Transit, Transit-150, Transit-250, Transit-350, Transit-350 HD, and Transit Custom
  • Master cylinder bore diameter of 1.125 inches for optimal hydraulic performance
  • Includes a removable reservoir and master cylinder cap for easy maintenance
  • Constructed from durable aluminum material for corrosion resistance and longevity
  • Equipped with two mounting holes and two outlets, including a rearward outlet sized M14 x 1.5
  • Integrated sensor included for brake system monitoring

Product Details and Specifications

The Dorman M631038 brake master cylinder is crafted from aluminum, providing a lightweight yet robust component that resists corrosion over time. It features a 1.125-inch bore diameter, which is critical for maintaining proper hydraulic pressure within the brake system. This master cylinder includes a removable reservoir and a master cylinder cap, facilitating fluid inspection and replacement. The unit has two mounting holes for secure installation and two outlets, including a secondary outlet with a 14 mm thread diameter and a rearward outlet sized M14 x 1.5. Additionally, the integrated sensor supports vehicle brake system diagnostics.

Common Applications and Problem Resolution

  • Restores proper brake pedal feel and hydraulic pressure in Ford Transit vehicles
  • Addresses brake fluid leaks caused by worn or damaged master cylinders
  • Eliminates spongy or unresponsive brake pedal issues
  • Replaces faulty sensors that affect brake system warning lights
  • Supports brake system maintenance for improved vehicle safety

Installation Notes and Tips

Installation requires removal of the old master cylinder and proper bleeding of the brake system to remove air. The Dorman M631038 does not include mounting hardware or push rod, so reuse existing components or acquire separately if needed. Ensure the reservoir is filled with the correct brake fluid and securely attach the master cylinder cap. Verify sensor connections are properly seated to maintain brake system monitoring functionality.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction offers durability and resistance to corrosion. This part includes a sensor to support vehicle diagnostics. While mounting hardware and push rod are not included, the product is backed by Dorman's quality standards. Please consult Dorman's warranty policy for specific coverage details.

BrandDorman
Part NumberM631038
Bleeder Hoses IncludedNo
Brake Booster IncludedNo
Master Cylinder Bore Diameter1.125
Master Cylinder Cap IncludedYes
Master Cylinder MaterialAluminum
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Number of Outlets2
Package Contents1 Master Cylinder
Push Rod IncludedNo
Rearward Outlet SizeM14 x 1.5
Reservoir IncludedYes
Reservoir TypeRemovable
Secondary Outlet Thread Diameter14
Sensor IncludedYes

This part fits 38 vehicles. Search below:

YearMakeModelPositionNotes
2024FordE-TransitN/A
2024FordTransitN/A
2024FordTransit-150N/A
2024FordTransit-250N/A
2024FordTransit-350N/A
2024FordTransit-350 HDN/A
2023FordE-TransitN/A
2023FordTransitN/A
2023FordTransit-150N/A
2023FordTransit-250N/A
2023FordTransit-350N/A
2023FordTransit-350 HDN/A
2022FordE-TransitN/A
2022FordTransitN/A
2022FordTransit-150N/A
2022FordTransit-250N/A
2022FordTransit-350N/A
2022FordTransit-350 HDN/A
2021FordTransitN/A
2021FordTransit-150N/A
2021FordTransit-250N/A
2021FordTransit-350N/A
2021FordTransit-350 HDN/A
2020FordTransitN/A
2020FordTransit-150N/A
2020FordTransit-250N/A
2020FordTransit-350N/A
2020FordTransit-350 HDN/A
2019FordTransitN/A
2019FordTransit-150N/A
2019FordTransit-250N/A
2019FordTransit-350N/A
2019FordTransit-350 HDN/A
2018FordTransitN/A
2017FordTransitN/A
2017FordTransit CustomN/A
2016FordTransitN/A
2015FordTransitN/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:

130.65144CK4Z2140A

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