CLK-Class (W209) 2003 on: CLK 270 CDI, CLK 200K, CLK 200 CGI, CLK 240, CLK 320, CLK 350, CLK 500, CLK 550 [Coupes & Cabriolets]

CLK500 2004 Catalytic Converters

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jul 14, 2015 | 12:34 PM
  #1  
MelVelasquez's Avatar
Thread Starter
Newbie
 
Joined: May 2013
Posts: 9
Likes: 0
CLK500
CLK500 2004 Catalytic Converters

Hello All,

I own a 2004 CLK500 and both of my Catalytic Converter seem to have gone south. This Cats are the second pair that have gone bad and my car has overpass the 80k warranty.

I am looking to see where I can get a pair of Cats either stock or aftermarket at a good price and/or if anyone knows a site where I can get them at a good price.
Reply
Old Aug 9, 2015 | 03:30 AM
  #2  
togaclk55's Avatar
MBWorld Fanatic!
 
Joined: May 2011
Posts: 1,456
Likes: 1
From: Bay Area, CA
CLK55
PM'd
Reply
Old Aug 11, 2015 | 11:40 PM
  #3  
kb24forlife24's Avatar
MBWorld Fanatic!
 
Joined: Nov 2012
Posts: 1,319
Likes: 14
From: SoCal
None for now
Just straight pipe it. You'll like it
Reply
Old Aug 11, 2015 | 11:48 PM
  #4  
Rudeney's Avatar
MBworld Guru
 
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
If your catalytic converters are failing that quickly, something else is wrong. A rich mixture can cause this, but you'd likely have an MIL for anything that would cause it. , Back pressure can cause this, too, due to overheating. When the first cats went out, did you also replace all the resonators and muffler? The reason MBZ only sells cats as part of the entire exhaust system is because as they fail, they spew molten metal into the exhaust where it can lodge int he other parts.
Reply
Old Feb 12, 2018 | 01:48 PM
  #5  
zuzu_pali's Avatar
Member
 
Joined: Apr 2016
Posts: 186
Likes: 2
2004 clk500
what are the part numbers for left and right side full catalyst converter part numbers ? for 2004 clk 500 coupe base module
Reply
Old Feb 12, 2018 | 10:09 PM
  #6  
Rudeney's Avatar
MBworld Guru
 
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
Look here:

https://www.shopmbonline.com/auto-pa...omponents-scat
Reply
Old Feb 13, 2018 | 04:32 PM
  #7  
zuzu_pali's Avatar
Member
 
Joined: Apr 2016
Posts: 186
Likes: 2
2004 clk500
Originally Posted by Rudeney
your the best !
Reply
Old Feb 13, 2018 | 09:23 PM
  #8  
Rudeney's Avatar
MBworld Guru
 
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
Make sure you check the other online MBZ dealers. No one has the best price on all parts, and shipping can vary based on where you are located relative to the dealer.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Feb 14, 2018 | 03:28 PM
  #9  
COOPERDB's Avatar
MBWorld Fanatic!
 
Joined: Jul 2014
Posts: 1,270
Likes: 160
From: UNKNOWN
NB8 PARACHUTE
`


Originally Posted by kb24forlife24
Just straight pipe it. You'll like it

https://mbworld.org/forums/clk-class...g-muffler.html

Post 11 / 13


Thank-You
D.B.


`
Reply
Old Feb 15, 2018 | 12:45 PM
  #10  
zuzu_pali's Avatar
Member
 
Joined: Apr 2016
Posts: 186
Likes: 2
2004 clk500
Originally Posted by Rudeney
yeah true , alwayse best to cross refrence. The funny thing is i cant get refunded for the core charge because i modified the cats and i took all material from the cats out.
Reply
Old Feb 15, 2018 | 04:07 PM
  #11  
zuzu_pali's Avatar
Member
 
Joined: Apr 2016
Posts: 186
Likes: 2
2004 clk500
Originally Posted by Rudeney
i cant seem to find the part numbers for all 4 02 sensors that go on both cats/exhaust pipes
Reply
Old Feb 15, 2018 | 04:11 PM
  #12  
Fatz's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Liked
Loved
 
Joined: Jun 2008
Posts: 1,227
Likes: 61
From: Atlanta Metro
2008 clk550 - Navigator - Frontier
Originally Posted by zuzu_pali

yeah true , alwayse best to cross refrence. The funny thing is i cant get refunded for the core charge because i modified the cats and i took all material from the cats out.
If you previously "gutted" the cats and the car ran ok, how can they now give you a problem? There is nothing there to fail (generally clogging) except for the shell to develop a hole.
Reply
Old Feb 15, 2018 | 06:34 PM
  #13  
zuzu_pali's Avatar
Member
 
Joined: Apr 2016
Posts: 186
Likes: 2
2004 clk500
Originally Posted by Fatz
If you previously "gutted" the cats and the car ran ok, how can they now give you a problem? There is nothing there to fail (generally clogging) except for the shell to develop a hole.
the reason i am getting new ones is because its way to loud and sounds like a desel truck. I learn alot from my mistakes lol.
Reply
Old Feb 16, 2018 | 04:58 PM
  #14  
zuzu_pali's Avatar
Member
 
Joined: Apr 2016
Posts: 186
Likes: 2
2004 clk500
i really dont want to spend 800$ on 4 upstream and downstream sensors. any one know of 40$ 02 sensors from ebay are even worth it?
here are all the part numbers for the 2004 clk 500 coupe

The O2 Sensors are the folowing part numbers:
1x 001-540-50-17 : Rh before Catz
1x 001-540-07-17 : Lh before Catz
2x 001-540-46-17 : Lh and Rh after Catz
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 12:22 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE