MagnaFlow 5531293 Catalytic Converter with Integrated Exhaust Manifold

Direct-Fit California Catalytic Converter

Restore emissions performance on the 2004-2005 Nissan Altima with MagnaFlow part number 5531293. This California Grade, CARB-compliant direct-fit catalytic converter is built for a precise OE-style replacement and is designed to help keep the check engine light off when the original converter has failed.

• Direct-fit design for straightforward installation on the listed Nissan Altima applications
• Stainless steel converter body, tubing, and finish for corrosion resistance
• Ceramic substrate material for emissions control performance
• Spun-body construction with a single laser fusion weld to reduce leak points
• Mandrel-bent tubing for freer exhaust flow through the assembly
• Mounting hardware included to replace worn factory fasteners and seals
• CARB-compliant for legal use in California and other CARB-restricted states on the listed vehicles

MagnaFlow California Converters Line

This MagnaFlow California Converters exhaust manifold with integrated catalytic converter is part of the brand’s California Grade line, which is built around direct-fit emissions replacements for vehicles that must meet CARB requirements. Part number 5531293 is engineered to match the original layout for the 2004-2005 Nissan Altima and cross-references OE numbers 14002-9J310 and 14002-9J30B.

Fits 2004 Nissan Altima, N/A. Fits 2005 Nissan Altima, N/A.

Common Replacement Uses

• Failed catalytic converter causing emissions test failure
• Check engine light related to catalyst efficiency codes
• Corroded or leaking factory exhaust manifold converter assembly
• Damaged OE spun-body converter needing direct replacement
• Exhaust seal issues at the manifold-to-pipe connection

Installation Notes

Use the proper tools for installation and follow the vehicle-specific service procedure. This direct-fit design does not require cutting or welding, and the included gaskets and hardware help reduce the chance of a leaking seal while avoiding reuse of corroded factory parts. Verify the vehicle’s emissions certification and engine family before installation to confirm the listed application.

Quality Assurance

MagnaFlow uses 3D scanning during development to help ensure OE-style fit and function. The stainless steel construction, compact low-mass design, and CARB-compliant testing support consistent performance on the listed 2004-2005 Nissan Altima applications.