SKU: 40435627517

Catalytic Converter for 2007-2014 Nissan Altima 3.5L MagnaFlow 551128

Sale price$514.35 Regular price$571.50
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 1 - Sep 6

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Description

Catalytic Converter for 2007-2014 Nissan Altima 3.5L MagnaFlow 551128Overview: Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 551128. With features including free flowing mandrel bent tubing and highly corrosion resistant, stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state of the art metrology department uses the latest 3D scanning systems during research

Overview:

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 551128. With features including free-flowing mandrel-bent tubing and highly corrosion resistant, stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. Designed to fit the 2009-2013 Nissan Maxima and 2007-2012 Nissan Altima, this direct-fit catalytic converter also interchanges with OE parts 208A3-9N70A, 208A1-JA21A, among others. Hardware is included to eliminate the hassle of working with corroded factory parts. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to be certified by CARB for legal use in CA/CARB restricted states for the listed vehicles.

Interchange:

Brand  Interchange Part Number
Nissan 208A1-JA21A
Nissan 208A3-9N70A
Nissan 208A3-JA21A
Nissan 208A3-ZN80A
Nissan 208A1JA21A
Nissan 208A39N70A
Nissan 208A3JA21A
Nissan 208A3ZN80A
Nissan 208A1-JA21A
Nissan 208A3-9N70A
Nissan 208A3-JA21A
Nissan 208A3-ZN80A
Nissan 208A1JA21A
Nissan 208A39N70A
Nissan 208A3JA21A
Nissan 208A3ZN80A

Application:

Year Make Model Submodel Engine Size
2007 - 2012 Nissan Altima 3.5L/V6
2009 - 2013 Nissan Maxima 3.5L/V6

Specs:

Body Material Stainless Steel
Material Stainless Steel
Overall Length (In.) 9.625
Series California
Substrate Material Ceramic
Air Tube Adaptable No
Subtitle California / CARB Compliant
Converter Quantity 1
Inlet Attachment Bolt-On
Title California Direct-Fit
Type Direct-Fit
Outlet Attachment Bolt-On
Finish Stainless Steel
Main Piping Diameter (In.) 2
Oxygen Sensor Location Post Converter
Mounting Hardware Included Yes
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40435627517

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4.4 ★★★★★
Based on 27 reviews
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Product Reviews
B
Verified Purchase
baffledbyreality
Dallas, US
★★★★★ 5
Exceeds performance expectations of OEM fluids
Size: 5 Quart Jug
You know I didn't think it would work as well I've heard all these horror stories but you know what this works better than the factory CVT fluid this stuff is great this is amazing be very careful to get your levels correct that goes without saying with any transmission but once you do that this fluid is amazing I have a better performance than when I had the new transmission I serve my CvT 35 to 40,000 miles I'm using it in a 2018 Mitsubishi outlander base model and I'm also running Yokohama geolander 015s on it. If you worry about tires for you Mitsubishi or any vehicle. I'm going to say you'll call when you lander whether it's a car or crossover or an SUV this tire is amazing it's best all around tire and your rain traction is phenomenal
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
M
Verified Purchase
Matt
Alexandria, US
★★★★★ 5
Good Stuff!! All low speed shudder is gone.
Size: 5 Quart Jug
I have a 2020 Nissan Altima SL 2.5l and Nissan is VERY specific about using ONLY NS3 transmission fluid. There are only a couple NS3 transmission fluid manufacturers...Nissan NS3 (Manufactured by Idemitsu), Idemitsu (a little cheaper than Nissan dealer), Triax, and Mannol (works good too). Seeing as Nissan is still using Jatco CVT transmissions which are known to be very troublesome, and very expensive to replace I wouldn't try any of the so-called "universal" transmission fluids just to save $50 and end up replacing a $6000 transmission. The Triax fluid seems to work very good in my car. I don't feel the shutter that I normally feel when driving slow and need to accelerate. The shudder is completely gone and operating smooth. The old fluid had 50k miles and it was very dirty but didn't smell burnt. I ended up doing 2 - 3 1/2 quart changes with 200 miles between the first and second change. I plan on doing another 3.5/4 quart change every 15k miles since there is no way to completely drain the 7.4 quarts of transmission fluid. The first change, only 3.5 quarts drained from the pan.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 19, 2025
B
Verified Purchase
Bcutshall
Draper, US
★★★★★ 5
Quality fluid for half cost in Mini CVT.
Size: 5 Quart Jug
Used in the cvt transmission in my 06 mini cooper. The fluid requirements recommended by BMW are met with this fluid. Fluid improved shifting and performance at half the cost of traditional BMW OEM fluid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
J
Verified Purchase
JeanLafete
Louisville, US
★★★★★ 5
This CVT Fluid worked perfectly in a 2018 Chevrolet Spark.
Size: 5 Quart Jug
This fluid is fantastic. I bought a 2018 Chevrolet Spark with 30K miles and had a bad transmission shudder. Drained the transmission, cleaned-out the pan, and replaced the filters. Old fluid was black and this is a clear green. I loved the jug as it had a pop-up spout that was small and easy to pour, and the jug has a side handle. Transmission works great and the shudder is gone. I plan to change the filters and fluid again after 1K miles. This fluid is well worth the money!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
M
Verified Purchase
Miguel Cruz
Chelsea, US
★★★★★ 4
Wonderful
Size: 5 Quart Jug
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2025

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