Thanks guys.
Finally found CARB-approved, inexpensive primary cats for C32
Super Member
Joined: Mar 2007
Posts: 946
Likes: 1
From: Bay Area
03 C32 gone, 06 CLS55, 16 Tesla X
Does anyone know where else to order 81087 (CA CARB approved) beside Auto Zone and Pep Boys? (my local Auto Zone said it was out of stock, and Pep Boys said they couldn't order 81807 (it's not for sale)). They actually have 81802. So if it's not CA CARB approved, why are they allowed to sale in CA? I also check Walker website and there is no option to place an order from them either 
Thanks!
Thanks!
MBWorld Fanatic!
Joined: Feb 2006
Posts: 6,213
Likes: 8
LET C32 2002
Some info for those of us in Cali who need to replace our primary catalytic converters, do not want to spend $$$$ for OEM, and who want to remain in compliance with the requirements of the California Air Resource Board (CARB). In other words, for those of us who are cheap *******s who want to still be able to pass smog (without any funny business).
As far as I can tell (and after hours of research and phone calls), the only aftermarket cat which is CARB-approved for the C32 is the Walker universal 81807. They are available at Pep Boys for $65 or so each. Note: Be careful when ordering from Pep Boys. . . they insisted that the model which I really needed was the 81802. This is incorrect, as the 81802 is for the other 49 states, and is not CARB-approved. I actually had to get the Pep Boys manager to call Walker to confirm that the California model is the 81807. In any case, these Walker cats have a 50,000 mile warranty.
If you need CARB-approved secondaries, they are Walker model 81660.
Thought this might be good info for my Cali brethren.
As far as I can tell (and after hours of research and phone calls), the only aftermarket cat which is CARB-approved for the C32 is the Walker universal 81807. They are available at Pep Boys for $65 or so each. Note: Be careful when ordering from Pep Boys. . . they insisted that the model which I really needed was the 81802. This is incorrect, as the 81802 is for the other 49 states, and is not CARB-approved. I actually had to get the Pep Boys manager to call Walker to confirm that the California model is the 81807. In any case, these Walker cats have a 50,000 mile warranty.
If you need CARB-approved secondaries, they are Walker model 81660.
Thought this might be good info for my Cali brethren.
Newbie
Joined: Oct 2009
Posts: 10
Likes: 0
From: Fayetteville Ga
1999 E430
Thanks for the info, it has been a pita trying to find info on primary cats for 99 e430. Does anyone know the cell count of these cats. I know it was asked earlier but didnt see a response. Thanks. Im looking for more flow.
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Joined: Sep 2008
Posts: 1,660
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From: Orange County
a land yacht.
MBWorld Fanatic!
Joined: May 2010
Posts: 1,227
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From: Chicago
E63 SL55 996TT C5Z06
Walker 81802 Catalytic Converters - do they fit similar to the OEM cats?
great write up and thanks for sharing.
I'm not mechanical so asking a dumb question here, are the Walker 81802's suggested because they are similar in size to the OEM secondary catalytic converters on the C32? i'm not in CA so these are the non-CARB ones that it looks like would work for my C32.
ALSO - to install these, I guess you have to cut the pipe in two places just before and after the existing OEM cat and then have the new Walker welded in correct?
i'm banging my head on the wall sorting out how to fix my rattling secondary cat's so this option with the Walkers sounds like its working for a bunch of guys. the dealer is telling me to replace all 4 cat's since i'm at 100k miles and he says the primary ones will probably go out soon so just pay the $2k plus ($1k for each full section of pipe and both cat's) and get all 4 replaced....sounds like BS to me when you can go the Walker route with some custom welding and run you about $400 total or so.
thx for any feedback.
I'm not mechanical so asking a dumb question here, are the Walker 81802's suggested because they are similar in size to the OEM secondary catalytic converters on the C32? i'm not in CA so these are the non-CARB ones that it looks like would work for my C32.
ALSO - to install these, I guess you have to cut the pipe in two places just before and after the existing OEM cat and then have the new Walker welded in correct?
i'm banging my head on the wall sorting out how to fix my rattling secondary cat's so this option with the Walkers sounds like its working for a bunch of guys. the dealer is telling me to replace all 4 cat's since i'm at 100k miles and he says the primary ones will probably go out soon so just pay the $2k plus ($1k for each full section of pipe and both cat's) and get all 4 replaced....sounds like BS to me when you can go the Walker route with some custom welding and run you about $400 total or so.
thx for any feedback.
Super Member
Joined: May 2013
Posts: 522
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2002 C32AMG
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Member
Joined: Apr 2008
Posts: 226
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From: San Francisco, CA
W203 C32 AMG, W124 E300D
Just some info for you fellow CA guys, did you know that some counties in CA don't smog cars?!! At least not after the initial registration. What many of my friends and myself included do is get a UPS mail box address in Lake County,CA and register the car to that address. Lake County only requires a smog check one time at the initial registration and none after that.....
