Unfortunately listed as NLA at the online dealership parts departments, and also listed as NLA at this forum sponsor's parts catalog (at the very top of every forum page).
Best bet is to pull one from a used air cleaner at the junkyard, or get one from a foum member (like me
)
Send me a PM, if you can't find one locally.
Being made of EDPM, the grommets tend to remain remarkably pliable even after 35 years.