sadly not a guru but I am sure one will show up

I could only find two in the shop on this page
https://www.outdoorking-forum.com.au/index.p...mp;sort=20a&filter_id=225&page=3and I am assuming your talking about these
"O-Ring Inlet Manifold to Cylinder"
one suitable for Powertorque (larger) 030113-2886
https://www.outdoorking-forum.com.au/index.p...mp;cPath=193_514_225&products_id=597(left side looking at page)
the other (smaller) does not 030113-540
The other is this I think you mean
Victa Powertorque O-Ring ST12629A
https://www.outdoorking-forum.com.au/index.p...mp;cPath=193_514_224&products_id=632(I cant find any others)
Provided it a Powertorque engine you got...I suppose it is
(but I dont know for sure ...)
(thought thats the period when things changed from OZ to China somewhere there..so not sure what the go is...)
If a guru hasn't chimed in to help you
and you really need to know asap
ring or send the shop an email would be the best idea..
HTH anyway
Cheers
