HomeBrake > Brake HydraulicsDorman M390518 Brake Master Cylinder
Part #: M390518

Dorman M390518 Brake Master Cylinder

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7 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Ford, Mustang
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Reliable Brake Master Cylinder for Ford Mustang

The Dorman M390518 brake master cylinder is designed specifically for Ford Mustang models, providing precise hydraulic control for your vehicle's braking system. This master cylinder features an aluminum construction and includes a reservoir and sensor to ensure consistent performance.

  • Master cylinder bore diameter: 1 inch
  • Durable aluminum material for long-lasting use
  • Includes reservoir and sensor for integrated functionality
  • Two outlet ports with rearward outlet size M10 x 1.0 and secondary outlet thread diameter M12 x 1.0
  • Thread pitch of 1.0 for secure connections
  • Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

The Dorman M390518 brake master cylinder is engineered to meet the hydraulic braking needs of Ford Mustang vehicles. Its 1-inch bore diameter allows for effective pressure transfer within the brake system. Constructed from aluminum, this master cylinder offers corrosion resistance and durability under demanding conditions. The included reservoir and sensor help maintain proper fluid levels and monitor system status, contributing to safer braking performance. The two outlets, sized M10 x 1.0 and M12 x 1.0, provide compatibility with standard brake line fittings, ensuring a secure and leak-free installation.

Compatible Vehicles and Applications

This brake master cylinder is compatible with various Ford Mustang models, making it a suitable replacement part for maintaining or restoring your vehicle's brake hydraulics. The part number M390518 corresponds directly to this application, ensuring proper fit and function.

  • Restores brake fluid pressure for consistent pedal feel
  • Replaces worn or leaking master cylinders
  • Addresses brake fluid reservoir leaks or sensor failures
  • Improves brake system reliability and safety
  • Solves issues related to uneven braking or pedal sinking

Installation Notes and Tips

Installation of the Dorman M390518 brake master cylinder requires basic mechanical knowledge and proper tools. Since mounting hardware is not included, retain original fasteners or acquire compatible hardware before installation. Ensure brake lines are properly connected to the correct outlet ports (M10 x 1.0 rearward outlet and M12 x 1.0 secondary outlet) and that all fittings are tightened to manufacturer specifications. After installation, bleed the brake system thoroughly to remove air and verify proper operation.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulic components. Consult product documentation or the manufacturer for exact warranty terms.

BrandDorman
Part NumberM390518
Master Cylinder Bore Diameter1
Master Cylinder MaterialAluminum
Mounting Hardware IncludedNo
Number of Outlets2
Package ContentsMaster Cylinder
Rearward Outlet SizeM10 X 1.0
Reservoir IncludedYes
Secondary Outlet Thread DiameterM12 X 1.0
Sensor IncludedYes
Thread Pitch1.0

This part fits 7 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004FordMustang3.9LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.
2004FordMustang3.8LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.
2003FordMustang3.8LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.
2002FordMustang3.8LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.
2001FordMustang3.8LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.
2000FordMustang3.8LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.
1999FordMustang3.8LV6N/ABrake Master Cylinder with 1" bore fits traction control systems.

* 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:

10-301913-3019130.6110513485BRMC-52F134459F9ZZ2140DAM4030M81109M901363MC390518MC504760

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