HomeBrake > Brake HydraulicsDorman M39327 Brake Master Cylinder
Part #: M39327

Dorman M39327 Brake Master Cylinder

7 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chrysler, Dodge, and Plymouth, Aries, LeBaron, Rampage, Reliant, and Town & Country
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Reliable Brake Master Cylinder for Chrysler, Dodge, and Plymouth

The Dorman M39327 brake master cylinder is engineered to restore proper brake hydraulics in select Chrysler, Dodge, and Plymouth vehicles. Designed with an aluminum body and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe and effective braking performance.

  • Master cylinder bore diameter: 0.875 inches for precise hydraulic pressure
  • Constructed from durable aluminum material for corrosion resistance
  • Includes reservoir for brake fluid storage
  • Two outlet ports with 3/8-24 inch thread size for rearward and secondary outlets
  • Compatible with Chrysler Aries, Dodge LeBaron, Rampage, Plymouth Reliant, and Town & Country models

Product Details and Specifications

The Dorman M39327 brake master cylinder features a 0.875-inch bore diameter, which is critical for maintaining the correct hydraulic pressure within the brake system. Its aluminum construction offers durability and resistance to corrosion, extending the service life of the component. The integrated reservoir simplifies brake fluid management, while the two outlets with 3/8-24 inch thread diameters accommodate standard brake line fittings. This master cylinder is designed specifically for use in Chrysler Aries, Dodge LeBaron, Rampage, Plymouth Reliant, and Town & Country vehicles, ensuring proper fit and function.

Common Applications and Problem Resolution

  • Restores brake pressure in vehicles experiencing soft or spongy brake pedal feel
  • Replaces leaking or damaged master cylinders causing brake fluid loss
  • Addresses brake system failure due to worn internal seals or corrosion
  • Improves brake response in Chrysler Aries, Dodge LeBaron, Rampage, Plymouth Reliant, and Town & Country models
  • Ensures proper brake fluid distribution for safe stopping performance

Installation Notes and Tips

When installing the Dorman M39327 brake master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify compatibility with your specific vehicle model and year before installation. Since mounting hardware is not included, retain original hardware or source appropriate fasteners. Handle the aluminum body carefully to avoid damage during installation.

Quality Assurance and Warranty Information

Dorman manufactures the M39327 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated reservoir contribute to long-term reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in product quality.

BrandDorman
Part NumberM39327
Mounting Hardware IncludedNo
Master Cylinder Bore Diameter0.875
Master Cylinder MaterialAluminum
Reservoir IncludedYes
Sensor IncludedNo
Number of Outlets2
Package ContentsMaster cylinder
Rearward Outlet Size3/8-24 in
Secondary Outlet Thread Diameter3/8-24 in

This part fits 7 vehicles. Search below:

YearMakeModelPositionNotes
1982ChryslerLeBaronN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1982ChryslerTown & CountryN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1982DodgeAriesN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1982DodgeRampageN/ABrake master cylinder for power brakes with a 7/8 In. bore.
1982PlymouthReliantN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1981DodgeAriesN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1981PlymouthReliantN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.

* 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:

10-18661070781186613-1866130.6303018M171388028683-32030F107078M-83030M1866M900371MC251010MC39327

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