Walker 16857 Catalytic Converter

Walker EPA Direct-Fit Catalytic Converter

Walker EPA Direct-Fit Catalytic Converter Part Number 16857 is built for specific-fit replacement on select Nissan Rogue applications. It is designed for OBDII vehicles and uses a stainless steel body with a ceramic substrate for dependable exhaust flow and emissions control.

The Walker EPA line focuses on direct-fit replacement parts that align with EPA standards for import and domestic vehicles. For buyers searching for a catalytic converter for a 2014-2020 Nissan Rogue, this part number 16857 provides a vehicle-specific solution with welded flange connections and pre-catalyst oxygen sensor placement.

Key Features

• Specific-fit catalytic converter for select Nissan Rogue models
• Walker EPA product line for EPA-compliant replacement applications
• Stainless steel body construction
• Ceramic substrate material
• 2-bolt welded flange inlet and outlet design
• Pre-catalyst oxygen sensor location
• Round body shape with direct-fit dimensions
• Compatible with 1996 and newer OBDII vehicles in supported applications

Detailed Description

Walker 16857 is a direct-fit catalytic converter engineered for 2014-2020 Nissan Rogue and 2019-2020 Nissan Rogue applications listed in the fitment data. It features a round stainless steel body, a ceramic substrate, and 2-bolt welded flange inlet and outlet connections with a 2.5-inch outside diameter. The overall length measures 29.75 inches, and the unit is configured for pre-catalyst oxygen sensor placement.

This part cross-references AP Exhaust 644065 for the same application. If you are replacing a worn or restricted catalytic converter on a Nissan Rogue, Walker 16857 offers a vehicle-specific exhaust solution that matches the listed fitment and connection style.

What This Part Helps Address

• Check engine light concerns related to catalyst efficiency
• Restricted exhaust flow from a deteriorated converter
• Emissions test failures caused by a failing catalytic converter
• Exhaust leaks at the converter connection points
• Fitment issues from using a universal replacement part

Installation Notes and Tips

Fits 2019-2020 Nissan Rogue, N/A. Fits 2014-2018 Nissan Rogue, N/A. For the 2014-2018 Nissan Rogue application, an exhaust gasket is recommended and additional parts are needed to complete installation: 2 of 31540. Verify the vehicle’s emission configuration before ordering, since the 2014-2018 listing covers Federal and California emission models but is not legal for sale or use in California and other CARB-compliant states. Legal use in New York and Maine is limited to EPA Federal Emission Equipped Vehicles only.

Because this is a specific-fit converter, confirm flange style, outlet diameter, and oxygen sensor location against the original exhaust assembly before installation. Professional installation is recommended for proper sealing and emissions system performance.

Quality Assurance

Walker EPA catalytic converters are built to comply with EPA standards for supported applications and are intended for direct-fit replacement on listed vehicles. Part number 16857 is designed around the original equipment-style connection layout to support proper fitment on the specified Nissan Rogue models.