Lister Petter LPW2/4 or Onan DN2M/DN4M freeze plugs

[Ratch]

I'm looking to buy a block heater, but don't know the size and can't find it in any manuals.
Anyone have an idea what size these plugs are? I don't think I'll be able to measure mine until Tuesday, and want to place the order asap.

 

[zarathustra]

Whatever size it is it'll be metric for sure.

 

[Chainbreaker]

Don't know if this helps but there is a block heater kit for LPW2/4 for sale on fleabay.

 

[Ratch]

I'll look for it, that might make things easier. Thanks.