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Discussion Starter #1
both eurocarparts and my local auto factors think the sump plug on my 2.0 t/s is 18mm thread...shame that I need a 20mm copper washer for it and hence it is now sitting oil-less until one turns up...I just read that 3.0l plugs are fitted as a thread repair-is this what has happened?
 

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Not necessarily. The thread of the sump is known to strip very easily so a previous owner my have tapped it with a larger thread instead of helicoiling it. You can try using a tapered sump plug in lieu of a repair available here
Alfa Romeo GTV Sump
 

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Discussion Starter #3
the thread and plug are fine-the problem is that I was provided with a new gasket (by two different suppliers) that is too small. Some 20mm copper washers have turned up today via eBay so the problem is solved-I just wondered why the plug/thread is different to what is expected.
 
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