Dorman M390218 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder for Hyundai Sonata

The Dorman M390218 Brake Master Cylinder is designed specifically for Hyundai Sonata models, providing reliable brake hydraulics performance. This master cylinder features an aluminum construction and includes a reservoir and sensor to ensure proper brake system function.

• Master cylinder bore diameter: 1 inch
• Constructed from durable aluminum material
• Includes reservoir for fluid storage
• Equipped with a sensor for brake system monitoring
• Two outlet ports 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 Product Description

The Dorman M390218 brake master cylinder is engineered to meet the hydraulic braking needs of Hyundai Sonata vehicles. Its 1-inch bore diameter allows for precise brake fluid pressure control, while the aluminum construction offers corrosion resistance and long-term durability. The included reservoir ensures consistent fluid supply, and the integrated sensor supports brake system diagnostics and safety features. With two outlets and a rearward outlet size of M10 x 1.0, this master cylinder is compatible with the specific brake line fittings on the Hyundai Sonata. The thread pitch of 1.0 ensures secure connections to the brake system components.

Common Applications and Issues Addressed

• Replacement for worn or leaking brake master cylinders on Hyundai Sonata
• Restores proper brake fluid pressure and pedal feel
• Resolves brake warning light issues related to sensor failure
• Fixes brake fluid reservoir leaks or damage
• Addresses inconsistent braking performance due to master cylinder wear

Installation Notes and Tips

• Compatible with Hyundai Sonata brake systems; verify vehicle year and specifications before installation
• Mounting hardware is not included; reuse existing hardware or source separately
• Bleed brake system thoroughly after installation to remove air
• Handle brake fluid carefully to avoid contamination and damage to painted surfaces
• Consult vehicle service manual for torque specifications and installation procedures

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit and function on Hyundai Sonata vehicles. The aluminum construction and integrated sensor contribute to reliable brake system operation. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Refer to Dorman's official documentation for exact warranty terms.