At Ronayers.com the fiche shows two part numbers, both for the same part (4) in the fiche for both the front and back cylinder heads. One is $10 which seems correct and one is $30 which seems rather high. What is that 2nd part? I emailed parts@ronayers.com but while they get to that, thought I'd see if anyone has run into this already. -jrg The front cylinder head fiche: Ronayers.com Microfiche Honda>Motorcycle>1993>VFR750F>FRONT CYLINDER HEAD 4 16211-MT4-000 INSULATOR $10.38 4 16211-MZ5-000 INSULATOR $30.50 The rear cylinder head fiche: Ronayers.com Microfiche Honda>Motorcycle>1993>VFR750F>REAR CYLINDER HEAD shows only one of the two insulators but gives the same two part numbers, again is index 4.
It's my recollection that all the carb boots are the same. Call a dealership and let them tell you the part numbers needed. Sometimes the part numbers are superceded to another and it is only possible to buy one, although the different prices are a head scratcher.