If your vehicle is listed on the fitment table below, the product will fit your car - we guarantee it. All you need to do is to ensure that the vehicle's Year, Make, Model, Trim, and any other notes specified inside the fitment table are respected.
Included warranty:
For warranty coverage information, please see our
Warranty Policy.
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51959. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion welds greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.
Characteristics include:
Durable 308 stainless steel MIG welds
Compact, lightweight construction enables installation in confined areas, welding is required
High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
Some of the interchangeable part numbers are:
Customer Video Reviews
Watch genuine customer videos showing their upgrades and honest results of similar products
Fitment Table
This product is compatible with these vehicles:
Year
Make
Model
Notes
Position
2023
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2023
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2022
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2021
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.86" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
2020
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
OEM Grade: For use on Federally (Excludes CA, CO, & NY) registered vehicles with California or Federal emissions systems
Cutting and Welding Required
Front
See what other customers say:
Customer Reviews
Overall rating: 4.8 / 5 from 675 reviews.
Everything was there. Great quality and came on time. Also got a great deal on items, lower than anywhere else.
La livraison se fait en un temps record, malheureusement il y a eu un erreur de pièce, par contre un service très professionnel, facile d'accès et dans ma langue natale..... Le retour est accepté sans frais. Tout les professionnels dans le domaines de la mécanique savent que des erreurs survient aléatoirement au niveaux pièces un jour ou l'autre, pas très agréable mais la ou ce joue la qualité du service est le service après vente et je peux confirmé la compétence de l'équipe Parts Pionner... Merci à l'équipe
Toujours en attente du ticket de retour mais j'ai confiance dans leurs bref délais...
LB Mécanique générale vous remercie et aux plaisirs de refaire affaire ensemble....!
This was my first dealing here. Easy to browse the site,the ordering process was quick and straightforward and shipping was fast and flawless. 10 out of 10.
Parts were well packaged, came with all hardware needed for clips, anti rattle clips, as well as mounting hardware. I drove the car to have the car relearn piston positioning, and these are much more grippy than factory honda/acura pads and rotors, so I am really happy with them. I am surprised it only took 3 days for them to arrive after ordering them from Calgary to sw ontario. I have already recommended part pioneer and this brand of pads and rotors to my friends.
Parts came really fast and of good quality as I’ve been a licensed mechanic for over 25 years departure just as good or better than buying in your local parts stores