Proper "REAR" replacement Catalytic Converter on 2001 E320 Sedan - Mercedes-Benz Forum

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Old 07-11-2011, 06:05 PM   #1 (permalink)
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Date registered: Jun 2010
Vehicle: 2001 E-320
Location: Las Vegas
Posts: 13
Proper "REAR" replacement Catalytic Converter on 2001 E320 Sedan

I've come to the conclusion to properly trace down this po432 code in my 2001 E320 sedan, I need to re-insall my original exhaust pipes back on my car. The problem with them is that the rear catalytic on each side came apart internally, sounded like a diesal truck, causing me to buy a cheaper new exhaust system for my car.
I see everyone saying to use magnaflow #53005 as a replacement cat.
If you look closely at the product details of a #53005 cat, it is designed as a replacement FRONT, not the REAR catalytic converter of a dual cat exhaust.
Not sure how you could fit that as a front on an E320 exhaust system.
Secondly, is that magnaflow #53005 directional?
I replaced the rear drivers side cat with a #53005 on my generic exhaust system in the car now, and the code has came right back. The passenger side wasn't long enough to slip in to where the pipe to the muffler is, causing a leak there, which i discovered this past weekend when i was down there changing the cat.
I saw no arrow or indication of direction on it, makes me wonder if they put the heat shield over the side with the arrow?
So is magnaflow #53005 suitable as a replacement REAR catalytic converter in a 2001 E320 sedan?
Or is there an alternative brand or part number that should be used as a REAR catalytic converter on the car.
I live in Nevada, but I beleive the car originally came from California, as I'm the second owner.
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Old 07-12-2011, 08:56 AM   #2 (permalink)
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Date registered: Mar 2010
Vehicle: 2001 E320 4Matic
Location: Richmond, Virginia
Posts: 15
hello
I just replaced my right side cat with the following. No issues used the same 02 sensor i only have 92kmiles.
Mercedes Benz Catalytic Converters
mb2296
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Old 07-12-2011, 10:33 AM   #3 (permalink)
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Date registered: Aug 2009
Posts: 18
2001 6 3.2L; D/S; 4matic DIRECT FIT CATALYTIC CONVERTER N/A 46122
2001 6 3.2L; D/S; Excl. 4matic DIRECT FIT CATALYTIC CONVERTER N/A 46124
2001 6 3.2L; P/S; 4matic DIRECT FIT CATALYTIC CONVERTER N/A 46123
2001 6 3.2L; P/S; Excl. 4matic DIRECT FIT CATALYTIC CONVERTER N/A 46125

Above I have included the only converters Magnaflow offers for this application. I took a look at what vehicle the part#53005 works for and it is called out for the 500 SEC, 500 SEL, and S500 ranging in years of 1984, 1985, 1994,1995. Unless the converter has a single or double arrow on the body for the exact direction the converters will work either way just keep the heat shield up between the converter and the body of the car.

http://www.magnaflow.com

The Official Site of MagnaFlow Catalytic Converters by Car Sound

Last edited by magnaflowrep; 07-12-2011 at 10:43 AM.
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Old 07-12-2011, 11:40 AM   #4 (permalink)
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Date registered: Jun 2010
Vehicle: 2001 E-320
Location: Las Vegas
Posts: 13
Thanks, but no thanks, I see your list price on that as $2000 a piece. I have the whole system already, and what I'm looking for is weld-in replacements for the 2 rear catalytic converters, one on each side, as the fronts on the exhaust sitting on my garage floor now are fine and the 2 rear have came apart internally and are rattling. I'm hoping to spend closer to $200 rather than $2000, again.
I already bought the whole exhaust system once, which is why I have the old set inmy garage, not from magnaflow nor a magnaflow product, and am not going to do it again due to it was not an exact fit, nor do I have that type of money.
You may want to review some of your prices when you have just the exhaust system is list priced at nearly half of the car's value!!
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Old 07-12-2011, 04:29 PM   #5 (permalink)
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Date registered: Apr 2007
Vehicle: 2001 SLK 320(178K Miles), 2002 E320 Special Edition(156K Miles)
Location: South Bay Area,L.A., CA
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It's even more expensive than genuine MB parts.
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Old 07-12-2011, 04:54 PM   #6 (permalink)
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Well, the good think about this post was that I actually went to the CARB web-site for a change. And good new for CA owners - there is now actually CARB-approved weld-ins available.

Walker makes the rear ones for about $85 and the front ones for $62. How good is Walker vs Magnaflow? Well, for myself I don't think the Magnaflows are $2,000 better. And for non-CA cars, you can even buy the ready-fit at $538.

I hope there may be more weld-ins from other manufacturers available on the CARB site, just didn't have time to look further.

So Magnaflow, it's time to step up to the plate.

And here you can look up the model number for the cat approved for your car in CA. http://arb.ca.gov/msprog/aftermkt/de...o/D-182-48.pdf

Last edited by Kobus; 07-12-2011 at 04:58 PM.
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