AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter
$132.23 price checked August 2026
If you need an EPA OBDII approved replacement for a 2007-2013 Nissan Altima 2.5L, this is the one.
The Nissan Altima Converter in Short
The AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter is for owners of 2007-2013 2.5L models who need a direct replacement for OE part numbers like 14002-JA01E to ensure correct manifold geometry.
Maintaining a vehicle’s exhaust system requires a component that meets EPA OBDII standards while ensuring proper thermal mass and flow. A correct fit allows the vehicle to operate within legal street legality requirements while maintaining the integrity of the manifold.
The Nissan Altima Converter achieves this by being ISO / IATF 16949 Certified and specifically engineered for 2007-2013 models. It serves as a direct replacement for several OE numbers, including 674933 and 674-933, to ensure the manifold bolts to the head correctly.
Our comparison involved analyzing the technical specifications of the exhaust manifold converter options we evaluated. This review is for buyers who prioritize verified compatibility and certification over generic aftermarket alternatives.
How ExtremeSpec Auto picked: we started from the 59 most-reviewed exhaust manifold converter listings in our retail dataset, removed duplicates, accessories and off-category products, and 46 qualified. This product is one of 10 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the Nissan Altima Converter
Best for: you own a 2007–2013 Nissan Altima 2.5L and need an EPA OBDII approved replacement that matches specific OE part numbers.
The Nissan Altima Converter is a reliable choice at the $132.23 price point.
- Pro: The unit is ISO / IATF 16949 Certified, ensuring manufacturing quality standards.
- Pro: It includes the necessary gasket and hardware for the 4 bolt connection.
- Pro: The product is EPA OBDII Approved for emissions compliance.
- Con: This converter is not certified for sale in California, Colorado, New York, or Maine, which restricts its use in those regions.
- Con: The 6-month warranty is shorter than many premium aftermarket components, which may limit long-term protection.
Don’t buy this if: your vehicle is located in California, Colorado, New York, or Maine, as the unit is not certified for use in those states.
Price assessment: At $132.23, the price is fair for a certified converter that includes hardware and gaskets.
ExtremeSpec Auto score: 7.4/10 (data-driven – see “How we picked” above)
If you are shopping for a different vehicle, see which exhaust manifold catalytic converter for jeep wrangler fits best.
Key Specifications
| OE Part Number Compatibility | 14002-JA01E, 14002-JA02E, 14002-JA91E, 140E2JA02E, 140E2JA03E, 140E2JA92E, 674933, 674-933, 1169 |
| Vehicle Compatibility | 2007-2013 Nissan Altima 2.5L |
| Connection Type | 4 Bolt connection |
| Certification | EPA OBDII Approved, ISO / IATF 16949 Certified |
| Included Items | Gasket and Hardware |
| Warranty | 6-month warranty |
| Exclusions | Not certified for sale in California, Colorado, New York, and Maine |
The Nissan Altima Converter matches the specific OE Part Numbers 14002-JA01E through 140E2JA92E to ensure the manifold geometry aligns with your engine block casting.
Where this sits in the buyer data: Among the 31 products screened for this category, this one’s 3.9 rating places it #17, on 18 ratings – above the 6-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 33 of them.
Before You Buy: Nissan Altima Converter Checklist
The first thing to check is your vehicle’s specific engine block casting to ensure the manifold geometry aligns with your exhaust system.
- ☐ Confirm your vehicle is a 2007-2013 Nissan Altima 2.5L
- ☐ Verify your OE part number matches 14002-JA01E, 14002-JA02E, 14002-JA91E, 140E2JA02E, 140E2JA03E, 140E2JA92E, 674933, 674-933, or 1169
- ☐ Check that your local area is not California, Colorado, New York, or Maine before ordering
- ☐ Budget for a professional installer to perform the mounting and connection
- ☐ Verify the 4 Bolt connection style matches your current manifold mounting points
You should not buy this product if your vehicle is located in California, Colorado, New York, or Maine, as it is not certified for sale in those states.
What the Numbers Mean in Use
EPA OBDII Compliance
The Nissan Altima Converter is EPA OBDII Approved, which ensures the unit meets federal emissions standards for street legality. You can drive the vehicle without triggering “check engine” lights or facing emissions non-compliance issues in most states.
Because this product is not certified for sale in California, Colorado, New York, or Maine, you must confirm your local state regulations before ordering. If you reside in one of these specific states, you should verify if a different certification is required for your region.
ISO 16949 Certified Manufacturing
ISO 16949 Certified manufacturing ensures the Nissan Altima Converter is produced under strict automotive quality management standards. This certification indicates that the manufacturing process for the internal honeycomb structure is consistent enough to maintain flow integrity and withstand high-temperature operation without melting or clogging.
The Nissan Altima Converter uses an internal structure designed to withstand the thermal loads of a 2.5L engine. To ensure the best fit, you should verify that your vehicle’s manifold geometry matches the OE part numbers 14002-JA01E, 14002-JA02E, 14002-JA91E, 140E2JA02E, 140E2JA03E, 140E2JA92E, 674933, 674-933, or 1169.
Complete Hardware and Gasket Package
The Nissan Altima Converter includes a gasket and hardware to support a 4 bolt connection. Having these components included means you have the necessary seals to ensure an airtight fit against the exhaust manifold.
The 4 bolt connection allows for a direct installation onto your existing exhaust system. You should confirm that your current manifold has the correct bolt patterns before purchase, as a port mismatch can prevent the unit from aligning with the cylinder ports.
How the Nissan Altima Converter Compares to Alternatives
The Nissan Altima Converter provides a high level of manufacturing certification, holding both ISO and IATF 16949 certifications which are standard for automotive quality management.
- The Nissan Altima Converter costs $132.23, which is $0.53 more than the AutoShack EMCC774856 Front Exhaust Manifold Catalytic Converter.
- The Nissan Altima Converter holds a 3.9 rating from 18 buyer ratings, while the Puermto Exhaust Manifold Catalytic Converter has no recorded ratings.
- The Nissan Altima Converter is priced $6.24 higher than the Toyota Camry 2.4L Exhaust Manifold Catalytic Converter.
- The Nissan Altima Converter costs $9.24 more than the Exhaust Manifold Catalytic Converter for Honda Civic.
- The Nissan Altima Converter costs $11.24 more than the Infiniti QX56 Nissan Armada Titan Pathfinder Manifold Catalytic Converter.
The Nissan Altima Converter matches multiple OE part numbers including 14002-JA01E and 140E2JA02E to ensure geometry alignment. Because the data does not specify the material grade, you should verify the substrate type against the OEM cast iron manifold to ensure it meets your durability requirements. If you prioritize the lowest possible price, the Infiniti QX56 Nissan Armada Titan Pathfinder Manifold Catalytic Converter is the cheaper option.
For a detailed breakdown of the specific model, see our full AutoShack Exhaust Manifold Converter review.
What Buyers Still Want to Know About the Nissan Altima Converter
Is the AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter worth the price to fix a “Check Engine” light?
The Nissan Altima Converter is designed to address specific exhaust flow issues that trigger dashboard alerts. At the $132.23 price point, you are purchasing an EPA OBDII Approved component intended to restore standard operation for 2007–2013 2.5L models.
Does the AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter include the gaskets and bolts?
Yes, the Nissan Altima Converter includes the gasket and hardware required for the 4 bolt connection. You will not need to source these mounting components separately to complete the installation.
Will the AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter stay legal in states like California or New York?
No, this product is not certified for sale in California, Colorado, New York, or Maine. You must verify your local state emissions regulations before purchasing to ensure the unit meets your region’s specific legal requirements.
What is the compatibility for the AutoShack EMCC774935 Nissan Altima Exhaust Manifold Converter?
The Nissan Altima Converter fits 2007–2013 Nissan Altima 2.5L engines and matches OE part numbers 14002-JA01E, 14002-JA02E, 14002-JA91E, 140E2JA02E, 140E2JA03E, 140E2JA92E, 674933, and 674-933.
To understand the technical details better, view the exhaust manifold converter terms and specs explained simply.
Is the Nissan Altima Converter Right for You?
The Nissan Altima Converter suits 5 kinds of buyer and is the wrong choice for 5 jobs, listed below with the reason for each.
Who the Nissan Altima Converter is for, and what it does well
Who the Nissan Altima Converter suits
- Independent auto repair shop owners — the 100-piece quantity allows for high-volume stock for common Nissan Altima repairs
- Budget-conscious Nissan Altima owners — the $132.23 price point provides an affordable way to maintain emissions compliance
- Fleet vehicle maintenance technicians — the ISO / IATF 16949 certification ensures consistent manufacturing quality for commercial use
- DIY car owners in non-restricted states — the direct installation onto existing exhaust systems makes it accessible for home mechanics
- Used car dealerships — the EPA OBDII Approved certification helps ensure vehicles pass emissions inspections for resale
What the Nissan Altima Converter handles well
- Replacing a failed manifold — the direct installation onto existing exhaust system design
- Passing state emissions inspections — the EPA OBDII Approved certification
- Standardizing parts inventory — the 100 pieces quantity for high-volume demand
- Securing the manifold to the engine — the 4 Bolt connection type
- Quick turn-around repairs — the included Gasket and Hardware for immediate installation
What the Nissan Altima Converter is the wrong choice for
- Registering a vehicle in California — the exclusion for sale in California
- Registering a vehicle in Colorado — the exclusion for sale in Colorado
- Registering a vehicle in New York — the exclusion for sale in New York
- Registering a vehicle in Maine — the exclusion for sale in Maine
- High-performance racing modifications — the standard 2.5L Nissan Altima compatibility and OBDII compliance
What to budget alongside the Nissan Altima Converter, and what to skip
Worth buying at the same time
- Vehicle lift — required to safely access the exhaust manifold for direct installation
- Socket wrench set — needed to secure the 4 Bolt connection
- Anti-corrosion spray — needed to protect the new manifold and hardware from road salt
- Torque wrench — needed to ensure the 4 Bolt connection is tightened to factory specifications
- Work gloves — needed for handling the hot exhaust system during installation
What you can skip
- Exhaust gaskets — the Gasket and Hardware are already included
- Mounting bolts — the Hardware is already included
- Aftermarket performance headers — this is a standard converter for a 2.5L engine
Where to Buy the Nissan Altima Converter
These retailers sell Exhaust Manifold Converter generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- eBay (online only) — finding specific OE replacements and used parts
- AutoZone (online and physical stores) — local availability and in-store returns
- O’Reilly Auto Parts (online and physical stores) — local availability and in-store returns
- Advance Auto Parts (online and physical stores) — local availability and in-store returns
- RockAuto (online only) — extensive catalog breadth and competitive pricing
- Summit Racing Equipment (online only) — specialist performance and aftermarket options
- Amazon (online only) — wide variety of third-party brands
Final Verdict on the Nissan Altima Converter
If you own a 2007 to 2013 Nissan Altima 2.5L and need an EPA OBDII approved replacement, the AutoShack EMCC774935 Nissan Altima Converter is a viable option at around $132.23.
The Nissan Altima Converter includes a gasket and hardware for a 4 bolt connection, and it holds a 3.9 rating from 18 buyers.
Skip it if: you live in California, Colorado, New York, or Maine, as this unit is not certified for sale in those states.
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