Raybestos MC391007 Brake Master Cylinder

Raybestos MC391007 Brake Master Cylinder

The Raybestos Element3 New MC391007 brake master cylinder is built for direct replacement service on select Honda and Acura applications. It features an aluminum master cylinder body, a 1.060-inch bore, and dual M14x1.5 ports for a clean OE-style hydraulic connection.

Compatible with 2003-2006 Acura MDX, 2006-2008 Honda Ridgeline, and 2006-2008 Honda Pilot, this brake master cylinder supports consistent pedal response and proper hydraulic pressure delivery. The Raybestos MC391007 is a fitment-focused replacement for vehicles that require the specified bore size and port configuration.

Element3 New Product Line

Raybestos Element3 New parts are positioned as new replacement components for brake service, with attention to application-specific fit and hydraulic specifications. For this master cylinder, the aluminum construction and dual-port layout align with the listed Honda and Acura applications.

Key Features

• Brake master cylinder for brake hydraulics service
• Aluminum master cylinder material for lightweight construction
• 1.060-inch bore size
• 2 mounting holes with 0.350-inch mounting hole diameter
• 2 ports with M14x1.5 primary and secondary port threads
• Direct-fit replacement for select Acura MDX, Honda Ridgeline, and Honda Pilot applications

Detailed Description

The Raybestos MC391007 brake master cylinder is engineered around the listed hydraulic specifications: a 1.060-inch bore, aluminum housing, two mounting holes, and two M14x1.5 ports. Those details matter when replacing a master cylinder because bore size and port thread type must match the vehicle’s brake system layout. This part cross-references Cardone Reman 11-3174 and Dorman - First Stop M630291 for the same application.

Use this part when servicing a 2003-2006 Acura MDX, a 2006-2008 Honda Ridgeline, or a 2006-2008 Honda Pilot. The Raybestos MC391007 is also listed for 2006 Honda Pilot applications with M14 x 1.5 port specification notes, making it a strong fitment-based choice for brake hydraulic repair.

Common Issues It May Address

• Low or inconsistent brake pedal feel
• Internal master cylinder leakage
• Brake fluid bypass causing reduced hydraulic pressure
• Brake warning concerns related to master cylinder wear
• Replacement needs after brake system contamination or corrosion

Installation Notes and Tips

Confirm the bore size, mounting hole layout, and both port thread specifications before installation. Brake hydraulic components should be installed with clean fluid passages and proper bleeding procedures to remove air from the system after replacement. Verify vehicle application details for the Acura MDX, Honda Ridgeline, or Honda Pilot before final assembly.

Quality Assurance

Raybestos brake components are built to meet application-specific replacement requirements, and this MC391007 master cylinder follows the listed OE-style fitment and hydraulic specifications for the confirmed vehicles.