Sump plug problem

Have a D90 300 TDi (1996) with new galv chassis which I brought recently with the intention of gradually improving during my weekends. On my first job - changing the oil - I had problem getting sump plug out. Noticed the thread was damaged so ordered a new one through Paddocks using engine number etc. Trying to fit it I find it wont engage with the thread. The old ones does engage. New plug too big? Should I get a tap and die set and recut the sump threads or old plug? If so what size is it likely to be and is it metric or imperial? The threads in Landyzone suggest M14.

cant you get the other plug, google uam2957l and lsf100040l and see what looks like your original

jamesmartin said:

cant you get the other plug, google uam2957l and lsf100040l and see what looks like your original

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The old one looks like the UAM2957L except is made of a silvery metal (alimunium?) and the new brass (product code on package is UAM2957L).

uam2957l is 13mm thread lsf100040l 14mm you must have the wrong plug in the packet

jamesmartin said:

uam2957l is 13mm thread lsf100040l 14mm you must have the wrong plug in the packet

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Hi James

Thanks for your help.

The LSF one has a flange on it http://www.roverparts.com/Parts/LSF100040L which is not like the original and the orginal looks like the UAM but a different colour: Sump Plug & Washer 300 TDi UAM2957L

Would something like this be the way ahead?

https://www.machinemart.co.uk/shop/product/details/laser-5225-oil-sump-repair-kit

If you do decide to run a tap through the sump drain hole I think it would be advisable to remove the sump to do this. This is the last place you want swarf whether it's steel, aluminium, brass or whatever.

id order another plug but not the same make

Thanks for the help