Your best bet when you're looking for parts is to find the engine on Novarossi's site:
http://www.novarossi.it/2012/index.p...nd-28-8ps.html
Pull up the expoloded view:
http://www.novarossi.it/2012/images/...END-28-8PS.pdf
And take the part number of what you're looking for (22812) over to Novarossi Direct:
http://www.novarossidirect.com/22812_p_2398.html
I'd recommend you verify that is what you need before placing your order.