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MOSTPLUS Front Exhaust Manifold Catalytic Converter Compatible for 2002 2003 2004 2005 2006 Nissan Altima 2.5L Replaces 674-659

4.3 4.3 out of 5 stars 417 ratings
$74.81
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Only 1 left in stock - order soon.
  • FITMENT: Compatible with Nissan Sentra 2.5L 2002-2006; Compatible with Nissan Altima 2.5L 2002-2005
  • OEM Part Number: 40810, 641169, 1195, NIS2527, NIS2534, 674-659, 674-659 327-59243AB, 59373/4 50120, 140029J360 140029J305 140028J008
  • Package Includes: 1pc catalytic converter as picture shows
  • NOTE: Non-CARB Compliant
  • Please check your car information before purchase.
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Important information

Legal Disclaimer

Non C.A.R.B Compliant - Not Legal for vehicles that must to meet California Emission standard.

From the brand

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  2. logo小版

    MOSTPLUS are one professional team with 15 years experience in aftermarket auto parts.We supply over 2000 kinds of performance and OEM replacement parts for most vehicles.

    Our motto is “more than business, beyond your expectation”. The aim of our team is to create and bring one impressed and fantastic experience for every customer.

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    MOSTPLUS Manifold Catalytic Converter w/Gasket Compatible for Nissan Altima 2.5L 2007 2008 2009 2...
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    MOSTPLUS Catalytic Converter

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Product Description

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Application

Fit for Nissan Sentra 2.5L 2002-2005; Nissan Altima 2.5L 2002-2006

OE Part Number: 40810, 641169, 1195, NIS2527, NIS2534, 674-659, 327-59243AB, 59373/4 50120, 140029J360, 140029J305, 140028J008

NOTE: Non-CARB Compliant

OE Specification Flanges are for direct installation, No furthur modification required.

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Features

MOSTPLUS Catalytic Converter is built by stainless steel under the most rigorous standard. All products are tested before shipment.

High Flow Catalytic Converter will meet or exceed OEM performance.

If you receive error code P0420, please do no panic. please check if oxygen sensors are working well firstly.

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Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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MOSTPLUS Front Exhaust Manifold Catalytic Converter Compatible for 2002 2003 2004 2005 2006 Nissan Altima 2.5L Replaces 674-659

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Customer reviews

4.3 out of 5 stars
4.3 out of 5
417 global ratings

Customers say

Customers like the ease of installation and value of the gasket. They mention that it's a breeze to install and a good buy for the price. However, some customers report issues with alignment. Opinions are mixed on quality and fit.

AI-generated from the text of customer reviews

7 customers mention7 positive0 negative

Customers appreciate the value of the gasket. They say it's a good buy for the price.

"...Good buy I’d recommend it to anyone." Read more

"Good for price works prefect" Read more

"Great value..." Read more

"Great price and perfect fit...." Read more

6 customers mention6 positive0 negative

Customers find the installation of the gasket to be easy. They mention that it's a breeze to install, and that everything went smoothly. Some say that the product provides immediate results after installation.

"I liked the ease of installation I had a few problems the original heat shield did not fit as well as a bracket that supports the catalytic..." Read more

"Great product. There was immediate results after install...." Read more

"converter came packaged well. it was a breeze to install. bad news. the check engine light came on after less than a month of light driving...." Read more

"I would recommend this product. No issues after installing and running great after a few months." Read more

22 customers mention11 positive11 negative

Customers are mixed about the fit of the gasket. Some mention that it fits perfectly, while others say that it didn't fit exactly. Some customers also mention that the mounts fit like OEM, while other customers say that the cat is much smaller than OEM.

"The CAT does fit the engine like OEM. The heat shield does need some work, due to warping...." Read more

"I liked the ease of installation I had a few problems the original heat shield did not fit as well as a bracket that supports the catalytic..." Read more

"Bolted right up to the engine no fitment issues. Heat shields had to be manipulated with a hammer and new holes drilled in heat shields...." Read more

"...Coming from a county away. Now on to the product, the part is a slight bit smaller than OEM...." Read more

12 customers mention6 positive6 negative

Customers are mixed about the quality of the gasket. Some mention it's a good product, while others say it'll be defective and not last.

"Great product. There was immediate results after install...." Read more

"...The bolts that bolt the manifold to the pipe are poor quality. Mine bent and I had to order replacements...." Read more

"Good product, but the holes in protection cover may not align with all of the holes on the converter" Read more

"...code p0420 for a faulty converter. it should last alot longer than a month. very disappointed. dont buy if you live where emission test is required." Read more

6 customers mention4 positive2 negative

Customers have mixed opinions about the performance of the gasket. Some mention that it runs great after a few months, while others say that it doesn't work less than a year since purchasing.

"...No issues after installing and running great after a few months." Read more

"...It is now July 2021 and the Catalytic Converter is no longer working. I have not heard any response from the seller trying to rectify this situation." Read more

"fit almost perfectly and the car ran good after replacing it." Read more

"Works very good" Read more

10 customers mention0 positive10 negative

Customers have issues with the alignment of the gasket. They mention that the holes for the heat shield didn't line up, the mount bracket by collector didn''t align, and the exhaust flange didn'. They also say that the heatshields had to be manipulated with a hammer and new holes drilled in.

"The CAT does fit the engine like OEM. The heat shield does need some work, due to warping...." Read more

"Bolted right up to the engine no fitment issues. Heat shields had to be manipulated with a hammer and new holes drilled in heat shields...." Read more

"...The holes for the heat shield didn't line up so I had to fabricate...." Read more

"...The real bad is the exhaust flange does not line up and when forced will cause and exhaust leak." Read more

This does not fit in the 2006 2.5 Altima
1 Star
This does not fit in the 2006 2.5 Altima
This manifold does not line up with the down pipe also is doesn’t line up with the oem bracket as you see in the photo. I want my money back this is complete garbage false claim
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Top reviews from the United States

Jeremiah Fryer
5.0 out of 5 stars CAT code cleared almost instantly!
Reviewed in the United States on June 26, 2022
Verified Purchase
Had a cat code on my 05 Altima, installed it and it cleared within 10 miles of driving. Have been driving it for a week and still good, better acceleration, fuel economy and no more code all for a mere 120 dollars I’m a very happy man rn. Rough idle is significantly less as well for anyone who needs to know. No heat shield holes don’t line up perfectly but we adjusted the holes a little and got both on. It came with new gasket, bolts, springs and heat shield bolts as well. Even if it failed a year from now and every year for ten years it would still be cheaper than one CAT from any parts store. Good buy I’d recommend it to anyone.
3 people found this helpful
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Amazon Customer
5.0 out of 5 stars Aftermarket products are not exact so be prepares to make adjustments
Reviewed in the United States on January 14, 2020
Verified Purchase
I liked the ease of installation I had a few problems the original heat shield did not fit as well as a bracket that supports the catalytic converter but I was satisfied with the outcome
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archee7k
5.0 out of 5 stars Mounts fit like OEM, heat shield need adjustment
Reviewed in the United States on July 27, 2022
Verified Purchase
The CAT does fit the engine like OEM. The heat shield does need some work, due to warping. The kit does come with all new exhaust and heat shield bolts. You will need to re-use the nuts that attach to the engine block. Very pleased with the CAT on my 2002 altima.
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Jesse Jolley
4.0 out of 5 stars Bolts right up.
Reviewed in the United States on April 3, 2022
Verified Purchase
Bolted right up to the engine no fitment issues. Heat shields had to be manipulated with a hammer and new holes drilled in heat shields. One of the heat shields i had to leave off.
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Amazon Customer
5.0 out of 5 stars Great value
Reviewed in the United States on July 1, 2020
Verified Purchase
I replaced my catalyst on my 2005 Nissan Altima about 12 months ago but I waited to do this review to see what the long term results would be. I wasn't sure if I could do the job myself but it turned out not to be too difficult. Maintenance people wanted over $800 to replace it so I decided to do it myself. Very glad I did it myself because I saved $700. The unit fit well and I have not had any problem with it. Highly recommend!
5 people found this helpful
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Blacksniper45
1.0 out of 5 stars Use another vender, spend a bit more.
Reviewed in the United States on July 19, 2020
Verified Purchase
So I'll start with the fact of the delivery,( no fault of the driver) but is was stuck in transit for 2 days. Coming from a county away. Now on to the product, the part is a slight bit smaller than OEM. The holes for the heat shield didn't line up so I had to fabricate. The springs for the exhuast hook up were too long, so I had to use most of the original OEM hardware, the new stuff it came with would not fit . They have some work to do with getting it close to OEM. The Weld for the heat shield bracket Weld near exhuast was close to the hole so the nut couldn't sit flat, had to Dremel it down. There might be other venders that are better built.
5 people found this helpful
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Bill H.
3.0 out of 5 stars did not fit exactly
Reviewed in the United States on December 13, 2022
Verified Purchase
did not fit exactly
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Roderick Williamson
5.0 out of 5 stars Good quality part!!!
Reviewed in the United States on May 23, 2021
Verified Purchase
Great product. There was immediate results after install. First week there was a burning smell but eventually it went away and due to the catalytic converter getting broken in. I would recommend this part to anyone. No codes show up regarding bank 1.
3 people found this helpful
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Top reviews from other countries

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Manuel P.
5.0 out of 5 stars Excelente
Reviewed in Mexico on July 26, 2023
Verified Purchase
Quedó ala perfección
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Amazon Customer
2.0 out of 5 stars Great price but poor fitment.
Reviewed in Canada on June 11, 2021
Verified Purchase
Things I did not like about this catalytic converter. OEM heat shields did not even come close to lining up! Tube id smaller then OEM. Pro’s great price.
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axel
5.0 out of 5 stars Muy buen producto
Reviewed in Mexico on November 17, 2022
Verified Purchase
El producto es de muy buena calidad, requieren algunas adaptaciones en los disipadores de calor pero cumple con lo establecido.
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ADF
4.0 out of 5 stars Calidad
Reviewed in Mexico on April 11, 2024
Verified Purchase
Llevo más de medio año y sigue funcionando
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jose morales
5.0 out of 5 stars muy buena
Reviewed in Mexico on November 9, 2022
Verified Purchase
muy buena refaccion ya lo ocupaba el auto
One person found this helpful
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