High Flow Front Catalytic Converter Kit – Direct-Fit for Nissan Altima 2.5L (2007–2013) – EPA Compliant
Upgrade your exhaust system with this High Flow Front Catalytic Converter Kit , engineered for a perfect direct-fit on your Nissan Altima 2.5L models (2007–2013) . Designed to replace OEM part numbers 674-933 and 140E2-ZX31E , this converter delivers the ideal balance of performance, durability, and emissions compliance.
Key Features:
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Direct-Fit Design: Precision-engineered flanges and mounting points for a seamless installation—no cutting or welding required.
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High Flow Efficiency: Optimized internal structure increases exhaust flow for improved engine performance and fuel economy without triggering the check engine light.
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Durable Construction: Built from premium stainless steel and equipped with a high-quality ceramic honeycomb substrate to ensure long-lasting reliability and corrosion resistance.
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EPA Compliant: Meets or exceeds EPA emissions standards for federal applications (not legal for use in California or states following CARB standards).
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OEM Replacement: Specifically designed to replace OE# 674-933 / 140E2-ZX31E for a guaranteed fit and function.
Vehicle Compatibility:
Fits the following Nissan Altima 2.5L 4-cylinder models:
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2007, 2008, 2009, 2010, 2011, 2012, 2013
Includes:
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Front Catalytic Converter Assembly
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Integrated Flex Pipe (if applicable)
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Gaskets and hardware (where required for installation)
Note: Professional installation is recommended. Not legal for sale or use in California or other CARB-regulated states.
Get the performance, reliability, and emissions compliance your Altima deserves with this High Flow Direct-Fit Front Catalytic Converter Kit —built to last and engineered to perform.













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