HomeBrake > Brake HydraulicsDorman M390375 Brake Master Cylinder
Part #: M390375

Dorman M390375 Brake Master Cylinder

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4 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Honda and Isuzu, Passport and Rodeo
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Reliable Brake Master Cylinder for Honda Passport and Isuzu Rodeo

The Dorman M390375 brake master cylinder is engineered to restore proper brake hydraulics for Honda Passport and Isuzu Rodeo models. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

Key Features of the Dorman M390375 Brake Master Cylinder

  • Master cylinder bore diameter of 1 inch for accurate fluid displacement
  • Constructed from durable aluminum material for corrosion resistance
  • Includes reservoir for brake fluid storage
  • Equipped with a sensor to monitor brake system status
  • Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
  • Secondary outlet thread diameter of 10 mm
  • Package contains the master cylinder only; mounting hardware not included

Detailed Description of the Dorman Brake Master Cylinder

This Dorman brake master cylinder (part number M390375) is specifically designed for use in Honda Passport and Isuzu Rodeo vehicles. The aluminum construction provides strength and resistance to corrosion, extending the service life of the component. The 1-inch bore diameter allows for precise hydraulic pressure control, essential for effective braking performance. The included reservoir ensures proper brake fluid containment, while the integrated sensor supports monitoring of brake system conditions. With two outlets and a rearward outlet size of M10 x 1.0, this master cylinder is compatible with the brake hydraulic systems of the specified vehicles.

Common Applications and Issues Addressed

  • Restores brake fluid pressure in Honda Passport and Isuzu Rodeo brake systems
  • Replaces worn or leaking master cylinders causing brake pedal sponginess
  • Solves brake fluid reservoir leaks or contamination issues
  • Addresses sensor faults related to brake system monitoring
  • Improves overall brake responsiveness and safety

Installation Notes and Tips

  • Ensure compatibility with your specific Honda Passport or Isuzu Rodeo model year before installation
  • Brake system should be properly bled after installation to remove air pockets
  • Mounting hardware is not included; retain original hardware or source separately
  • Handle brake fluid carefully to avoid contamination and damage to painted surfaces

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit and function. The aluminum construction and integrated sensor contribute to reliable performance. While mounting hardware is not included, the product undergoes quality checks to ensure durability. Warranty details can be obtained from the product documentation or Dorman directly.

BrandDorman
Part NumberM390375
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 Diameter10
Sensor IncludedYes
Thread Pitch1.0

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
1997HondaPassportN/ACompatible with 1-inch bore drum brake wheel cylinders.
1997IsuzuRodeoN/ACompatible with 1-inch bore drum brake wheel cylinders.
1996HondaPassportN/ACompatible with 1-inch bore drum brake wheel cylinders.
1996IsuzuRodeoN/ACompatible with 1-inch bore drum brake wheel cylinders.

* 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:

11-250313-2503130.430251317218M8008971017080F141739M55053M901035MC390375MC504120

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