2009 Alfa Romeo Mito 155hp sump

Question

Got bored in lockdown, decided to change oil and filter in my car, all went well apart from when i had finished draining my oil, the threads on the inside of the sump were toast. Struggled to get the bolt in and couldn't get it tight, now 3 days after there is still a very slow leak from my sump. While car part suppliers are still open, none of them sell the exact sump i need(link below) as it has to come from Alfa. What kind of temporary/long term fixes are available to me?

https://www.bestpartstore.co.uk/12814802-klokkerholm-wet-sump

Answer 1

Re-tap the sump plug hole and fit a slightly larger sump plug. You should be able to get a tool to re-thread it to a specific size and therefore the right sized plug.

Use a torque wrench when doing up the new plug to avoid over tightening again

Alternately you can use a sealant and bodge it sealed but it may be tough to get it out for the next oil change.

Answer 2

Could also look at the oversized drain plugs. They are supposed to cut new threads. Not too expensive.