If your dealer says discontinued then check JEEPOEMPARTS.com and make sure they say the same, they're a dealer in TX and have great prices. I've ordered from them a few times and had no issues. On the site look under engine-engine parts. They list the dipstick, tube, and o-ring for the tube as well (don't forget the oring if you change the tube). Total of about $28...not sure how much on shipping and they also charge about a buck fifty for processing. Would be cheaper in this case from a local dealer because of shipping, but if that's not possible then you gotta pay it right.
I find it hard to believe these parts are discontinued...plus I want to say there's some type of rule that your parts are to be available for ten years after manufacture of the vehicle too...no clue where I came up with that though....
2009 Red Rock JK Unlimited Rubi
2006 Scion xA
1999 WJ Limited Quadradrive V8
1997 Chevrolet Z71
1994 ZJ Laredo 4.0 - Sold
Thanks for the IR Remote Smokinbk.