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Exhaust Manifold w/ Catalytic Converter Fits 02-06 Nissan Sentra Altima 2.5L

Exhaust Manifold w/ Catalytic Converter Fits 02-06 Nissan Sentra Altima 2.5L


SKU: Sentra Manifold Category:



Exhaust Manifold w/ Catalytic Converter for 02-06 Nissan Sentra Altima 2.5L

2002 - 2003 - 2004 - 2005 - 2006

Nissan Altima Sentra 2.5L 

Exhaust Manifold Catalytic Converter

Includes Free Gasket and Bolts

Please check heat shield and flange to ensure proper fitment on your vehicle.

Includes everything in the photos. Please compare your parts to ensure exact fitment.

Not certified for sale in California but will pass CA smog

Not legal for sale in California. If your vehicle is registered in California, do not purchase this part. If your vehicle meets California requirements, but is not registered in California, this converter will work on your vehicle.
So why can't I just buy one of the cheaper products sold elsewhere on eBay or from discount sellers? Most converter manufacturers are driven strictly by price, and have not put the proper research and development into making sure they sell you a product that works and fits properly on your car.  Most brands use cheaper catalyst that does not effectively keep the CEL off.  Some only keep the light of for a couple days, weeks, or months, but cannot last long term.  Even when the product fails within the warranty period, these companies develop loopholes requiring you to produce all sorts of documentation and making you jump through hoops when you are the victim.
What a catalytic converter costs become irrelevant if it doesn't even work.  The reason many of these other companies are selling converters so cheaply is because the catalyst they use in their products is so inferior to what we use.  Catalytic converters contain precious metals that can cost thousands of dollars per ounce.  They reduce the cost of their product by using less of these materials.  If inadequate quantities of precious metals are used, the converter cannot effectively keep the CEL off, and the converter will fail.
Some would argue that top well know brand names would be safe bets, and some of them are less expensive than the product we sell here.  However, this is simply not true.  Converters sold under brands such as Magnaflow, Dynomax, Catco  etc. are just ordinary cheap converters of the same variety that are listed above.  They do not have the precious metal content or catalyst technology required to make a durable, long lasting, and efficient converter, nor do they flow any better than OEM converters or our product or anything else out there.
So what makes this converter better than the other products out there? We use better quality catalyst, and use precious metal blends and coating technologies that are not used by cheaper competitors.  We have designed our product to be one of the longest lasting, most dependable products out there.  We do not cut corners.  If we find our product doesn't work in the field, we will remove it from our product listings until the issue is identified and corrected.
I live in California, will this converter work on my car? No. Within the state of California, special emission laws have been put into effect that require that only state approved converters can be used on replacements on vehicles that will be registered in California.  These certifications are approved on an application/engine family basis.  However, these guidelines only pertain to vehicles that will be registered within California.  So if your car is registered in California, you have little choice but to comply with California regulations.
I do not live in California but my car says it meets California requirements, can I use this converter? Vehicles that have a California emissions sticker are designed to meet the stricter emission requirements of California.  Vehicles that meet California requirements do not need to have California legal converters if they are registered outside California, however the stricter emissions standards do need to be taken into consideration.  We strive to take the guesswork out by making sure that our converters will work on the intended application whether it meets California requirements or not.  Our converters work on all FED and CA emission vehicles and are legal for installation in all 49 states excluding California.  Our converters would technically work in California as well, but we cannot sell them there for legal reasons.
Special notes to installer While we have taken every design precaution to ensure that this product will function correctly on the vehicles listed, it must be made clear that the original converter did not fail due to age or mileage.  The factory converter is designed to last the lifetime of the vehicle.  It has no moving parts and  does not errode or otherwise wear out. The factory converter likely failed due to a fuel management problem or from chemical contamination due to impurities found in some fuels.  The converter can only handle certain amounts of unburnt fuel.  If the vehicle is running too rich, or if the combustion is not consuming most of the fuel before it enters the exhaust, the converter can be overheated or otherwise damaged.  It is for this reason that the vehicle should be properly tuned on a regular basis.  O2 sensors should be replaced every 80,000 miles, spark plugs every 60,000 - 100,000 miles, and the injectors and combustion chambers should be cleaned with a product designed for this purpose every 10,000 miles or every year.  Use of an incorrect octane fuel may contribute to the formation of deposits in the converter, which can harm the catalyst.  Use only the octane recommended in the owners manual.  Only OE spec spark plugs and wires should be used, as other brands may cause poor combustion and contribute to deposit formation.

We have determined that failure of either the front O2 sensor (the front wide-band sensor, also known as an Air-Fuel Ratio Sensor) or the rear or downstream sensor, can trigger a false P0420 code.  Both sensors should be replaced when you replace the converter.

EPA approved for all Federal and California compliant vehicles, including Low Emission Vehicles* in all states excluding California.  Not legal for sale in California. If your vehicle is registered in California, do not purchase this part. If your vehicle meets California requirements, but is not registered in California, this converter will work on your vehicle.

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Free Shipping to lower 48 states. Additional charge to ship to outside of US including PR, AK, and VI. We ship to all USA states and Worldwide. We ship using USPS or FedEx ground or home delivery

We warrant our products against manufacturer defects for 90 days from the original date of purchase.

Please contact us for a Return Material Authorization (RMA) number within 14 days of receipt before returning your goods. We do not accept any return without RMA number. Customers will be charged 15% restocking fee.

Customers are responsible for all return shipping charges incurred. Shipping and handling fee is non-refundable.



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Additional information

Weight 12.00 lbs
Dimensions 20 x 10 x 16 in
Interchange Part Number

Placement on Vehicle



Manufacturer Part Number

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