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 9 - Jul 14

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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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M
Belleville, US
★★★★★ 5
New mom jeans
Perfect Jean for my new postpartum bod! Was sad that none of my old jeans fit. I Was mourning them really-then I decided to just bite the bullet and buy some new jeans in my new size and these are them! They are relaxed enough for me to bend at the knees and not feel like I’m cutting off blood, but fitted enough that I don’t look like a slouch. I could technically have gone a size down and would have liked them but I appreciate some give in this phase of life. For reference I am 5’6 and 129 lbs and I got a 27
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2025
L
Verified Purchase
Leanna From Indiana
Lexington, US
★★★★★ 5
So cute and well-made
Great pants made very well, I was hoping they’d be a little longer when I folded them back down at the ankle. But a little too short for me I’m 5’7” which is perfect for us spring and summer, but not going into winter where I live. If you were 5’6” they might be perfect for wearing rolled up or down. It’s a good quality material. They feel very durable in the style is right on!
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Reviewed in the United States on November 1, 2025
V
Verified Purchase
Valerie Pham
Carnegie, US
★★★★★ 5
Perfect Jeans!
Size: 26, Color: Verified Vintage, Size: 26, Color: Verified Vintage
Love these jeans, so soft and lightweight but with all the usual Levi’s class. I bought them in three different colors. They’re so well fitting and comfortable to wear. Im 5’5 140 pounds and it is true to size. The perfect fit every time.!
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Reviewed in the United States on May 11, 2026
A
Verified Purchase
Audra Betzer
Los Angeles, US
★★★★★ 5
Classics! Good material with no stretch.
Size: 28, Color: Verified Vintage
I am in love with these jeans. I ordered another pair in a different wash. I also sized up two sizes but I like the looser, slouchy fit.
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Reviewed in the United States on April 17, 2026
J
Verified Purchase
Jackie McPheeteers
Los Angeles, US
★★★★★ 4
Back to the 70s
I love these. They fit perfect in the waist but are roomy else where.
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Reviewed in the United States on October 21, 2025

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