I bought a bunch of part number 3404182 (and other things) back when Chrysler was having $ problems, a few years ago – just so I could have them when I needed them.
I don’t know if it is the same part as 4002010, or not (hadn’t looked into it), but it is also a fuel filler neck grommet.
When I bought part # 3404182, they cost me about $4.00 each or so (going by memory) and this would have been in early 2009 or so. The production date on my grommets, is 1/15/2009.
With all of my spare parts, I have vacuum packed the parts using my wife’s food vacuum packer (I don’t think she knows yet), to keep the rubber deterioration down to a minimum (as I try to do with all of my spare parts).
In Oklahoma, with the 80-90% humidity in summer time, it doesn’t take any time at all for rust to have a huge party (ie: I have had many a new part, be rusted beyond use, still in the box in a dry shelf – because of high humidity).
I’ve even tried putting new parts in Ziploc Baggies – and that also doesn’t do much good, either.
FYI, I just looked it up, the current MSRP from Chrysler on part # 3404182 is $54.95 as of today (ouch!).
Part number 4002010 shows to still be available new, and MSRP is $16.70 (US)
BudW