SKU: 12134301011

2009-12 Mercedes-Benz GL450 CARB Compliant Catalytic Converter 5551172 Magnaflow

Sale price$1006.65 Regular price$1118.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

2009-12 Mercedes-Benz GL450 CARB Compliant Catalytic Converter 5551172 MagnaflowCatalytic Converter California Direct Fit Catalytic Converter Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 5551172. 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

Catalytic Converter

California Direct-Fit Catalytic Converter

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5551172. 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 2009-2012 Mercedes-Benz GL450, 2009-2012 Mercedes-Benz GL550, and more, this direct-fit catalytic converter also interchanges with OE parts 164 490 51 36 and 164 490 52 36. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Specs:

Air Tube Adaptable : NO
Air Tube Count : 0
Body Height : 4 IN
Body Length : 11.25 IN
Body Material : Stainless Steel
Body Shape : Round
Body Type : Spun
Body Width : 4 IN
Clamps Included : NO
Finish : Stainless Steel
Grade Type : Regular
Hangers Included : Yes
Heat Shield Attached : NO
Inlet Gasket Included : NO
Inlet Inside Diameter : 2 IN
Inlet Mounting Hardware Included : NO
Inlet Quantity : 1
Inlet Type : BOLT-ON
Outlet Gasket Included : NO
Outlet Inside Diameter : 2.5 IN
Outlet Mounting Hardware Included : NO
Outlet Quantity : 1
Outlet Type : Clamp-On
Overall Length : 49 IN
Sensor Port Count : 1
Series : California
Substrate Material : Ceramic
Title : MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5551172
Tube Material : Stainless Steel

Application:

  • 2009 Mercedes-Benz GL450
  • 2009 - 2012 Mercedes-Benz GL550
  • 2009 - 2011 Mercedes-Benz ML550
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: 12134301011

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 932 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 5
Nice and a good price.
Fit our F250 Diesel well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2025
R
Verified Purchase
Rick
Waukegan, US
★★★★★ 5
Great fitment
Nice fitment
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
L
Verified Purchase
Lauren Drennan
Grantham, US
★★★★★ 2
F250 cabin filter change
Too thick. Air flow decreased significantly which is terrible in the AZ heat!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 27, 2025
D
Verified Purchase
Dale
Bozeman, US
★★★★★ 5
Clean filtered air
Installed easy. works great. Clean filtered air.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2025
B
Verified Purchase
Bobbi
Houston, US
★★★★★ 5
IMPRESSED!
Item Package Quantity: 1, Item Package Quantity: 1
I bought this for my Honda civic 2017 lx 1.5 and it is a perfect fit. I didn’t realize how important it is to change it. Let me tell you if you are thinking about buying this, it’s your sign not JUST because of health which is vital and first and foremost but the PRICE! At any oil change or auto shop they will charge no less than 50$ and I’ve seen higher. I will continue to buy this brand. I will update in my next 5,000 miles. 8.00$ or 50$+ and the quality is EXACTLY the same, your choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026

recommand products