SKU: 85160825339

2011-2012 Audi A8 Quattro Direct-Fit Catalytic Converter 21-694 Magnaflow

Sale price$427.95 Regular price$475.50
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

2011-2012 Audi A8 Quattro Direct-Fit Catalytic Converter 21-694 MagnaflowOverview: Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 21 694. 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 OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-694. 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 2011-2012 Audi A8 Quattro and interchanges with OE part 4H0 254 200 MX. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation.

Note : Not For Sale in California

Interchange:
Brand  Interchange Part Number
Audi 4H0 254 200 MX
Audi 4H0254200MX
Audi 4H0 254 200 MX
Audi 4H0254200MX

Application:

Year Make Model Submodel Engine Size
2011 - 2012 Audi A8 Quattro 4.2L/V8

Specs:

Mounting Hardware Included Yes
Air Tube Adaptable No
Outlet Attachment Bolt-On
Overall Length (In.) 14.75
Outlet Quantity 1
Inlet Quantity 1
Heat Shield Attached No
Type Direct-Fit
Title OEM Grade Direct-Fit
Subtitle Federal / EPA Compliant
Substrate Ceramic
Series OEM Grade
Oxygen Sensor Location Pre Converter and Midbed
Outlet Diameter (In.) 2.25
Material Stainless Steel
Body Height (In.) 5
Main Piping Diameter (In.) 2.25
Inlet Diameter (In.) 2.25
Inlet Attachment Bolt-On
Hangers Included No
Gasket Included Yes
Finish Stainless Steel
Converter Quantity 1
Clamp Included No
Body Width (In.) 5
Body Type Spun
Body Shape Round
Body Length (In.) 9.5
Sensor Port Count 2
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: 85160825339

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4.7 ★★★★★
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Verified Purchase
JC
Port Orchard, US
★★★★★ 5
No smells!
Scent: Orange, Size: 30 Count (Pack of 1)
These work really well for us in our camper. Our tank holds around 40 gallons. After dumping the tank I drop one in the toilet and flush for about a minute to add water to the tank. Then. Everytime we use our camper in the summer (2 or 3 times a month) I drop in another tablet in the toilet and do the same thing. This has worked great and we never have had a problem with smell! The box usually lasts me a couple of years. Definitely recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
M
Verified Purchase
Mike Bacon
Chelsea, US
★★★★★ 5
Product great. Delivery not so much.
Scent: Lavender, Size: 30 Count (Pack of 1)
Product works fine. But having it delivered by Amazon in just a brown bag caused the plastic container that holds the product all in the bag. This really need to be shipped in a box. Aleast I can use the product and will have to store it in a Rubber made container.
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Reviewed in the United States on June 8, 2026
T
Verified Purchase
True Reviews By Red
Lexington, US
★★★★★ 5
Our go-to for RV tank maintenance – reliable
Scent: Pine, Size: 10 Count (Pack of 1), Scent: Pine, Size: 10 Count (Pack of 1)
This has become our go-to brand for maintaining the tanks in our 5th wheel camper. We’ve used several products over time, but we keep coming back to this one because it’s dependable and does exactly what it’s supposed to do. The drop-ins are super easy to use—just toss one in and you’re set. We’ve had no issues with unpleasant odors while using these, even during longer trips, which makes a big difference when you’re living in close quarters. We trust this brand and their products, and it’s one of those items we make sure to always have stocked before heading out.
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Reviewed in the United States on May 1, 2026
S
Verified Purchase
Samantha L Cuellar
Bozeman, US
★★★★★ 5
Not the best of scents for an RV Toilet Tank
Scent: Lavender, Size: 30 Count (Pack of 1)
I don't know why I thought the scent of lavender would be great for my black water holding tank, but it's not. I'm sorry to say that I will have to return it. There's 30 Camco toilet 🚽 treatment packets in this container. All you have to do is just drop one of these packets into the toilet and flush it down into the holding tank. I am not saying that this product is not good; I'm saying that I will have to exchange it for a different scent. I won't know until I try a different scent, because I might be allergic to Camco's RV Toilet Treatment Drop-ins. The lavender scent put out such a bad smell, I couldn't breathe all night last night. I had to keep filling up my tank, waiting for awhile, and then dumping it all out. I had to keep doing that till the bad smell went away. So I'm gonna give Camco another chance, and try a different scent, and just go from there. I should have known better than to use a toilet treatment that had a perfume scent. I'm allergic to fragrant's, I have to use fragrance free laundry soap.
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Reviewed in the United States on February 2, 2026
D
Verified Purchase
DeAnna
Alexandria, US
★★★★★ 5
Solid, Reliable, and Makes the Gross Job Way Easier
Style: 20' Rhino Sewer Hose
Solid, Reliable, and Makes the Gross Job Way Easier This is hands-down the best sewer hose kit I’ve used. It’s sturdy, easy to connect, and doesn’t feel flimsy like some of the cheaper ones. The clear elbow is a lifesaver because you can actually SEE when everything is done (which every RVer knows matters). The hose holds its shape, stretches exactly as needed, and packs up neatly. If you’re full-time or travel often, this is the one you want.
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Reviewed in the United States on December 5, 2025

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