One guy told me there were some No 6 that were made stronger for big diesel engine applications that they called No7.... has anyone heared about this???


Thanks,
Erik

Yes, but cant offer any details. From what I remember it is for cruisers not racing.

looking like the no6s??

Thanks,

You can see the parts break down here.
http://www.mercruiserparts.com/selec...doc_nbr=853693