The AutoShack EMCC774935 Exhaust Manifold Converter is EPA OBDII Approved, but it is not certified for sale in California, Colorado, New York, or Maine. Because emission standards vary by state, you must confirm your local regulations before purchasing, as this unit does not include a CARB EO number for California street use.
Our research into the Nissan Altima Converter shows it is designed for direct installation onto existing exhaust systems using a 4-bolt connection, and it includes the necessary gasket and hardware. This specific part is an exhaust manifold converter, which is a metal tube with an internal honeycomb structure that cleans engine exhaust gases before they exit the vehicle. Because exhaust manifold converters are bolted directly to the engine block, ensuring the part matches your specific engine casting is vital to avoid port mismatches. This unit replaces OE part numbers including 14002-JA01E and 140E2JA02E. It features a 6-month warranty and is ISO / IATF 16949 Certified. While the converter is designed to function without a specific ECU tune or “delete” software, you should verify if your specific engine model requires any software updates to prevent a check engine light after installation.
What to Check Before Buying the Nissan Altima Converter
Before ordering this component, verify these technical details to ensure a correct fit and legal operation for your vehicle.
- Confirm your state’s emissions laws, as this product is restricted in California, Colorado, New York, and Maine.
- Verify that your vehicle’s engine block casting matches the listed OE interchange numbers like 674933 or 1169.
- Check for heat-shielding clearance in your specific engine bay to ensure the converter does not interfere with nearby plastic components.
- Confirm that your high-mileage vehicle does not have existing catalyst clogging issues that might require a different flow rate.
- Ensure your local regulations do not require a professional installer for exhaust manifold modifications.
Comparing the Nissan Altima Converter to Other Options
The Nissan Altima Converter is a standard-fit replacement designed for direct bolt-on use. Buyers who require a high-flow ceramic substrate for maximum performance or specific off-road applications might prefer to look at aftermarket high-flow options rather than this standard EPA-approved unit. If you need a converter that meets California’s specific CARB standards, you will need to seek out a different product that explicitly lists a valid EO number. For most owners simply looking to replace a failed factory unit on a 2007-2013 Altima 2.5L, this part provides the necessary hardware and direct-fit geometry.
If you own a Hyundai, you can view our top-rated Hyundai Santa Fe Sport options for better performance.
If you need a direct-fit replacement for a 2007-2013 Nissan Altima 2.5L and do not live in one of the restricted states, the AutoShack EMCC774935 is a practical choice for restoring your vehicle’s exhaust system.
AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter
Owners of Toyota models can see how various Toyota Camry units compare in our detailed breakdown.
$132.23 price checked August 2026
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