AP Exhaust 771409 Catalytic Converter - Front Left

CARB-Compliant Direct-Fit Catalytic Converter

AP Exhaust 771409 is a CARB compliant direct-fit catalytic converter built for specific Nissan front-left applications. It uses a ceramic substrate and OE-style dimensions to support proper fitment on California-emissions vehicles, including Nissan Altima and Nissan Maxima models.

The 2NSXV03.5C6A product line focuses on exact-fit replacement geometry and efficient substrate loading. AP Exhaust combines automated manufacturing, spinner welding, and high-speed production processes to keep converter dimensions consistent with OE requirements while maintaining competitive cost control.

• CARB compliant direct-fit catalytic converter
• Ceramic substrate material
• Executive Order D-798-9
• Front left position fitment
• 6-bolt welded inlet and 3-bolt welded outlet
• 1 O2 sensor port
• Overall length: 13 inches
• Inlet hardware and outlet hardware included

Detailed Product Overview

AP Exhaust 771409 is engineered for California-emissions replacement service on select Nissan Altima and Nissan Maxima front-left exhaust locations. The converter is built to OE dimensions for direct installation and uses AP Exhaust Holdings, LLC Executive Order D-798-9 compliance for regulated applications. The ceramic substrate supports efficient catalyst loading, while the welded flange design helps maintain a secure exhaust connection.

This part cross-references no listed aftermarket part numbers for the same application. For buyers searching by fitment, this is a direct-fit catalytic converter for 2002-2008 Nissan Altima and 2004-2008 Nissan Maxima front left applications with California emissions requirements.

What This Part Helps Address

• Failed catalytic converter efficiency codes
• Emissions test failure on California-compliant vehicles
• Exhaust restriction from a deteriorated converter
• Check engine light concerns related to catalyst performance
• Fitment issues from non-OE-style replacement parts

Installation Notes and Tips

Verify the vehicle’s year, model, engine configuration, and California emissions status before installation. This converter uses a 6-bolt welded inlet, a 3-bolt welded outlet, and one O2 sensor port, so confirm the existing exhaust layout and sensor placement match the vehicle application. Use the included inlet and outlet hardware as required by the installation.

Quality Assurance

AP Exhaust manufactures this converter with automated workstations, spinner welding equipment, and high-speed production lines to maintain consistent OE-style dimensions and fitment. The product is backed by Executive Order D-798-9 for the listed California-emissions applications.