Dorman M390176 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet and Pontiac Vehicles

The Dorman M390176 brake master cylinder is engineered to restore proper brake hydraulics in Chevrolet Grand Prix, Lumina, and Pontiac Monte Carlo models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance.

Key Features of the Dorman M390176 Brake Master Cylinder

• Master cylinder bore diameter: 24 mm for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for integrated brake system monitoring
• Four outlets with rearward outlet sizes M11 x 1.5 and M13 x 1.5
• Secondary outlet thread diameters M10 x 1.0 and M12 x 1.0
• Package contains the master cylinder only; mounting hardware not included

Detailed Description and Technical Specifications

The Dorman M390176 brake master cylinder is designed specifically for select Chevrolet and Pontiac models, including the Grand Prix, Lumina, and Monte Carlo. Its 24 mm bore diameter ensures precise hydraulic pressure delivery, critical for effective braking. Manufactured from aluminum, this master cylinder offers enhanced durability and resistance to corrosion compared to traditional materials. The included reservoir and sensor facilitate seamless integration with the vehicle's brake system, allowing for accurate fluid level monitoring and brake performance feedback. Featuring four outlets with specific thread sizes (rearward outlets M11 x 1.5 and M13 x 1.5, secondary outlets M10 x 1.0 and M12 x 1.0), this part supports proper brake line connections for these vehicle models.

Common Applications and Issues Addressed

• Restores brake hydraulic pressure in Chevrolet Grand Prix, Lumina, and Pontiac Monte Carlo
• Replaces worn or leaking master cylinders causing brake fluid loss
• Solves brake pedal sponginess or failure due to internal cylinder wear
• Addresses sensor-related brake warning lights by including integrated sensor
• Improves brake system reliability and safety through precise bore diameter and material quality

Installation Notes and Tips

• Ensure compatibility with Chevrolet Grand Prix, Lumina, and Pontiac Monte Carlo before installation
• Mounting hardware is not included; retain original hardware or source separately
• Bleed brake system thoroughly after installation to remove air and ensure proper function
• Handle brake fluid carefully to avoid contamination and damage to painted surfaces
• Verify sensor connections for proper brake system warning light operation

Quality Assurance and Warranty Information

Dorman manufactures the M390176 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term reliability. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.