2003 Hummer H2 6.0L Direct-Fit Catalytic Converter 4451218 Magnaflow
SKU: 15218383378

2003 Hummer H2 6.0L Direct-Fit Catalytic Converter 4451218 Magnaflow

Sale price$432.00 Regular price$480.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

2003 Hummer H2 6.0L Direct-Fit Catalytic Converter 4451218 MagnaflowOverview: Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 4451218. 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 4451218. 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. This direct-fit catalytic converter is designed specifically for the 2003 Hummer H2. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. 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

Application:

Year Make Model Submodel Engine Size
2003 Hummer H2 6L/V8

Specs:

Heat Shield Attached No
Mounting Hardware Included Yes
Overall Length (In.) 48.375
Sensor Port Count 2
Substrate Material Ceramic
Main Piping Diameter 2.5
Gasket Included Yes
Series California
Subtitle California / CARB Compliant
Title California Direct-Fit
Finish Stainless Steel
Type Direct-Fit
Converter Quantity 1
Outlet Attachment Clamp-On
Clamp Included Yes
Air Tube Adaptable No
Oxygen Sensor Location Pre and Post Converter
Material Stainless Steel
Hangers Included No
Inlet Attachment Bolt-On
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: 15218383378

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Vicki Fontana
Charlottesville, US
★★★★★ 5
One size smaller is perfect!
Color: Navy, Size: 10 Years
This suit fit perfect but I did order one size smaller than my grandson normally wears. It is very well made and he can't wait to wear it in the wedding.
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Reviewed in the United States on March 19, 2026
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Laurie Rygiel
Chelsea, US
★★★★★ 5
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Color: Beige, Size: 10 Years
Our grandson looked so handsome!
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Reviewed in the United States on May 6, 2026
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TG88
Lake Worth, US
★★★★★ 3
Fits wide
Color: Navy, Size: 7 Years
Nice suit but fits wide IMO
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Reviewed in the United States on June 5, 2026
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Amazon Customer
West Palm Beach, US
★★★★★ 5
Summer wedding kids suit
Color: Navy, Size: 10 Years, Color: Navy, Size: 10 Years
Bought this suit for my son in the 10 youth size and honestly was pleasantly surprised by the quality for the price. The navy color looks sharp and dressy without being too stiff or uncomfortable. The material has a little stretch, which helped it fit nicely and made it comfortable for him to move around in. The adjustable waist was a huge plus, especially for growing kids. It fit true to size overall, though the blazer sleeves were slightly long on my son. The pants had a nice slim look without being too tight. We paired it with white sneakers for a more modern look and it came out adorable. This would be perfect for weddings, graduations, concerts, communion, school events, or family photos. Overall, very happy with the purchase and would definitely buy again.
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Reviewed in the United States on May 18, 2026
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Kindle Customer
Port Orchard, US
★★★★★ 5
Very Modern Handsome Suit
Color: Grey, Size: 7 Years, Color: Grey, Size: 7 Years
This is an incredibly sharp looking suit for the little guy. Great price and features, too. I made a mistake in sizing up instead of down and first one was too sloppy on him and would need alterations. He is thin and very thin in the waist. There is a lot of adjustment with buttons in waistband and coat hides the bunching. This shirt and coat will easily take a fuller body than slim I believe. He loves posing in it and feels very classy. Best purchase for a formal suit that will last longer than most kids clothes size wise. Felt bad about returning but careful folding and packing got it good as new.
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Reviewed in the United States on May 20, 2026

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