Dorman M390180 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder M390180

The Dorman Brake Master Cylinder M390180 is designed specifically for Buick Century and Oldsmobile Cutlass Ciera models. This brake hydraulics component ensures reliable brake fluid pressure and includes a reservoir and sensor for enhanced functionality.

• Master cylinder bore diameter: 24 mm
• Constructed from durable aluminum material
• Includes reservoir for brake fluid
• Equipped with a sensor for monitoring
• Four outlet ports for brake line connections
• Secondary outlet thread diameter: 10 mm
• Rearward outlet size: M10 x 1.0 and unthreaded
• Mounting hardware not included

Detailed Product Description

The Dorman M390180 brake master cylinder is engineered with a 24 mm bore diameter to provide consistent hydraulic pressure for the braking system. Its aluminum construction offers corrosion resistance and long-term durability. This master cylinder comes with an integrated reservoir, allowing for proper brake fluid storage and circulation. The included sensor helps monitor brake fluid levels or pressure, contributing to vehicle safety. Featuring four outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0 plus an unthreaded port, this part supports multiple brake line configurations. This master cylinder is compatible with Buick Century and Oldsmobile Cutlass Ciera vehicles, ensuring a precise fit and reliable performance. Note that mounting hardware is not included and must be sourced separately.

Common Applications and Issues Addressed

• Restores proper brake fluid pressure in Buick Century and Oldsmobile Cutlass Ciera
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Solves brake fluid reservoir leaks or sensor malfunctions
• Addresses brake line connection issues with multiple outlet ports
• Improves overall brake system responsiveness and safety

Installation Notes and Tips

• Verify compatibility with Buick Century or Oldsmobile Cutlass Ciera before installation
• Ensure brake fluid reservoir is properly filled and free of air after installation
• Use appropriate brake line fittings for the 10 mm secondary outlet and rearward outlet sizes
• Bleed the brake system thoroughly to remove air pockets
• Mounting hardware is not included; use existing hardware or purchase separately

Quality Assurance and Warranty

Dorman manufactures the M390180 brake master cylinder to meet or exceed OEM specifications for fit and function. The aluminum construction and integrated sensor contribute to reliable operation under normal driving conditions. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics components. Consult product documentation or the manufacturer for exact warranty terms.