Dorman M390418 Brake Master Cylinder

Reliable Brake Master Cylinder for Acura, Honda, and Isuzu Vehicles

The Dorman M390418 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Acura, Honda, and Isuzu models. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and effective braking performance.

• Master cylinder bore diameter: 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

Product Details and Specifications

The Dorman M390418 master cylinder features a 1-inch bore diameter, which is critical for maintaining the correct hydraulic pressure in the brake system. Its aluminum construction offers strength and resistance to corrosion, extending the service life of the component. The included reservoir allows for proper brake fluid containment, while the integrated sensor provides real-time monitoring of brake fluid levels or pressure, depending on vehicle configuration. This master cylinder has two outlets, including a rearward outlet sized M10 x 1.0 with a thread pitch of 1.0, and a secondary outlet with a 10 mm thread diameter, ensuring compatibility with the brake lines of Acura Accord, Honda Odyssey, Isuzu Oasis, and other compatible models.

Compatible Vehicles and Applications

This brake master cylinder is compatible with various Acura, Honda, and Isuzu vehicles, including:

• Acura TL and CL
• Honda Accord and Odyssey
• Isuzu Oasis

Use the Dorman M390418 to address brake system issues related to hydraulic pressure and fluid delivery in these models.

Common Issues Addressed by This Master Cylinder

• Spongy or unresponsive brake pedal
• Brake fluid leaks from the master cylinder or reservoir
• Brake warning light activation due to sensor signals
• Reduced braking efficiency or inconsistent brake pressure
• Contaminated or deteriorated master cylinder components

Installation Notes and Tips

Installation of the Dorman M390418 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic function. Note that mounting hardware is not included, so retain original fasteners or acquire appropriate replacements. Verify thread sizes (M10 x 1.0) for outlet connections to ensure compatibility with existing brake lines. Sensor connections should be carefully reattached to maintain brake system monitoring capabilities.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using quality aluminum materials and precise machining. The product includes a sensor for system monitoring and is designed for durability and reliable performance. Warranty coverage details can be obtained from the product documentation or manufacturer resources to ensure confidence in your purchase.