Walker 14653 Catalytic Converter - Rear Left

Walker 14653 EPA Direct-Fit Catalytic Converter

Walker EPA Direct-Fit Catalytic Converter 14653 is built for OBDII-era vehicles and engineered to meet federal EPA standards while maintaining direct-fit installation geometry. It is a premium-grade replacement for the rear left exhaust position on select Nissan Pathfinder and INFINITI QX4 applications.

Walker Ultra Direct-Fit Catalytic Converters are part of Walker’s EPA-focused product line for import and domestic 1996-and-newer vehicles. This design supports a direct replacement approach for emissions service on the 1996-2004 Nissan Pathfinder and 1997-2003 INFINITI QX4.

• Premium-grade catalytic converter for exhaust repair
• Federal / EPA direct-fit undercar design
• Standard catalyst type
• Overall length: 25.000
• 3-bolt welded inlet and 2-bolt welded outlet
• 1 O2 sensor port
• Fits 1996-2004 Nissan Pathfinder, rear left, EPA
• Fits 1997-2003 INFINITI QX4, rear left, EPA

Detailed Product Overview

Walker 14653 is a direct-fit catalytic converter designed for the rear left exhaust location on compatible Nissan Pathfinder and INFINITI QX4 models. The welded inlet and outlet configuration supports a factory-style exhaust connection, while the EPA-compliant design addresses emissions system replacement needs on federal applications. For buyers searching for a catalytic converter for 1996-2004 Nissan Pathfinder rear left or 1997-2003 INFINITI QX4 rear left, this part number provides a targeted fitment match.

Common Repair Uses

• Check engine light related to catalyst efficiency
• Failed emissions inspection due to converter performance
• Exhaust restriction from a worn or damaged converter
• Rattling or deteriorated internal catalyst substrate
• Replacement of a corroded rear left catalytic converter assembly

Installation Notes and Tips

Verify the rear left position, inlet and outlet flange style, and O2 sensor port count before installation. Because this unit uses welded inlet and outlet connections, proper exhaust alignment is important for a secure seal and correct fit. Confirm vehicle emissions requirements and match the application to the exact year, make, model, and position listed for Walker 14653.

Quality Assurance

Walker’s EPA Ultra Direct-Fit line is developed for federal emissions compliance on 1996 and newer OBDII vehicles. Part number 14653 is built as a premium replacement catalytic converter for the specified Nissan Pathfinder and INFINITI QX4 applications.