Bosal 278-713 Exhaust Resonator - Rear

Direct-Fit Resonator for OE Sound Control

The Bosal BRExhaust Direct-Fit Exhaust Resonator, part number 278-713, is built for drivers who want a direct replacement that helps preserve the original exhaust tone. It is engineered to reduce unwanted exhaust noise and backpressure while using aluminized steel construction for corrosion resistance and long-term durability.

Compatible with 2001-2004 Nissan Pathfinder, rear, and 2001-2003 INFINITI QX4, rear, this direct-fit resonator assembly is shaped for straightforward replacement in the rear silencer location. The Bosal 278-713 is part of the BRExhaust Direct-Fit Exhaust Resonator line, a product line focused on OE-style fitment and application-specific exhaust replacement.

Key Features

• Direct-fit exhaust resonator assembly for rear exhaust service
• Aluminized steel body and pipe construction for corrosion resistance
• Flanged inlet with 2-bolt flange connection
• Round resonator shape with 6-inch body diameter
• Designed to reduce unwanted exhaust noise and backpressure
• Outlet tip configuration with 2.125-inch outside diameter
• Overall length of 48.75 inches for application-specific fitment

Detailed Description

Built for OE-style exhaust replacement, the Bosal BRExhaust Direct-Fit Exhaust Resonator 278-713 is engineered to restore the rear exhaust section on select Nissan and INFINITI vehicles without changing the intended sound profile. Its aluminized steel construction helps resist corrosion, while the flanged inlet and direct-fit layout support a clean replacement of the rear silencer assembly. For owners searching for a 2001-2004 Nissan Pathfinder rear resonator or a 2001-2003 INFINITI QX4 rear exhaust resonator, this part provides an application-matched solution.

This part cross-references Nissan 20350-4W01A and 20350-4W010 for the same application.

What It Helps Address

• Excess exhaust noise from a worn rear resonator or silencer
• Backpressure changes caused by a damaged exhaust section
• Corrosion-related failure in the rear exhaust assembly
• Fitment issues when replacing an OE-style rear resonator
• Exhaust tone changes after the original resonator deteriorates

Installation Notes and Tips

Verify the rear exhaust configuration before installation and match the flange style, outlet diameter, and overall length to the vehicle’s original setup. This resonator uses a flanged inlet with a 2-bolt pattern and a tip-style outlet, so alignment with the existing exhaust path is important for proper sealing and fit. Confirm compatibility with 2001-2004 Nissan Pathfinder and 2001-2003 INFINITI QX4 rear applications before ordering.

Quality Assurance

Bosal BRExhaust direct-fit exhaust components are designed around application-specific fitment and corrosion-resistant aluminized steel construction to support dependable exhaust service on the listed vehicles.