I only see one number in the parts catalog, though there might have been a running change on 2007 (don't have time to look that up at the moment)
Should be about $20 IIRC
2014 WK2 Overland 5.9L
2007 WK Limited 5.7L
And some past Durangos
Red WK #19, Hemi #68.. I think..
Durango Owners Club DOTY 2011
"Must have been that yesterday was the day that I was born"