AP Exhaust 754343 Catalytic Converter

CARB-Compliant Direct-Fit Catalytic Converter

AP Exhaust 754343 is a CARB compliant direct-fit catalytic converter built for 2003-2006 Nissan Sentra California applications. It uses a ceramic substrate and stainless steel body construction, with OE-style dimensions for accurate fitment and emissions-system service.

The 3NSXV01.8D2A product line is engineered around AP Emissions Technologies’ ARISTO substrate chemistry and advanced manufacturing process. That combination supports efficient catalyst loading, consistent converter construction, and fitment that matches the original exhaust layout for the Nissan Sentra.

Key Features

• Direct-fit catalytic converter for California emissions applications
• Fits 2003 Nissan Sentra, N/A; 2004 Nissan Sentra, N/A; 2005 Nissan Sentra, N/A; 2006 Nissan Sentra, N/A
• CARB compliant with Executive Order D-280-102
• Stainless steel body for exhaust-system durability
• Ceramic substrate material
• One O2 sensor port
• 3-bolt welded inlet flange with gasket stub
• 2-bolt welded outlet flange
• Overall length: 50.5 in.

Detailed Description

AP Exhaust part number 754343 is a direct-fit catalytic converter for the Nissan Sentra, covering 2003, 2004, 2005, and 2006 California emissions applications. It is built to OE dimensions for straightforward replacement of the original converter and is CARB compliant under Executive Order D-280-102. The stainless steel housing and ceramic substrate are selected for emissions-system service where proper fitment and catalyst efficiency matter. This part cross-references AirTek, Inc. (e.g., 3NSXV01.8D2A) for the same application.

Common Replacement Reasons

• Failed emissions test or catalyst efficiency fault
• Check engine light related to catalytic converter performance
• Exhaust restriction affecting engine operation
• Rust, cracking, or damage to the original converter body
• Need for a California-compliant replacement on a Nissan Sentra

Installation Notes and Tips

Verify the vehicle’s emissions certification before ordering, since this converter is listed for California applications only. Confirm the inlet and outlet flange style, O2 sensor port location, and overall exhaust routing against the original unit before installation. Because this is a direct-fit converter, it is intended to align with the factory exhaust layout on the listed Nissan Sentra model years.

Quality Assurance

AP Exhaust uses proprietary substrate chemistry and automated manufacturing processes to build converters to exact OE dimensions and fitment. The result is a CARB compliant replacement designed for consistent construction and emissions-system service on the listed Nissan Sentra applications.