changing catalytic converter on 406 2.1TD

Dec 05, 2005 3 Replies

Hi, Just behind the cat on my 406, there a welded joint. Behind this welded joint is about 10" of pipe, which then attaches to the middle box. This welded joint has started to break. I've priced a replacement cat, but wondered if this will needed to be welded in place. If this is the case, then I might as well get the existed joint re-welded. Can anyone let me know if this is the case



Many Thanks Neil D


I have never seen one which needs to be welded in place. I am sure they come with the pipe already welded on, you replace the complete section. However, if you can weld it up again, why bother with the cost of replacement?

Hi, I recently had the exact issue. At one end (engine) it should be bolted (I had a nightmare with those bolts!)and at the other the pipe is clamped. I bought a replacement from Europarts and all was good. No welds needed. The joint towards the back was too big for the replacement clamp so I had to use the original. Hope this helps

Thanks for the replies, but after a lot of thought, I've had it done in a garage today. I couldn't do the welding myself, so I ruled that out, as if I had to pay someone to take it off to weld it, I might as well have had a new one. It was less than I expected at £127, but other garages charged up to £270, so it varied by quite a bit. Looking under the car though, it didn't look that difficult, it's just I couldn't get under the car enough with just a jack (and I didn't trust it!)

Thanks Neil D

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