So I bought a load of NOS Oldsmobile dipstick tube‘s and dipsticks. Most of them have numbers on them but one I cant identify. If you look in the picture it’s the ones all the way at the top they measure about 21 inches long and have a little twist to them. The next ones down are 419242 which are 68 through 75 big block olds the ones below that are 417091 which is 74-75 dipstick tube. And the bottom ones are 401567 which are 68 - 73 350. I just can’t place the top one. any ideas? Tia brandon.

 

I have a copy of Chris Witt's Olds part number database with dimensional measurements that may be able to answer your question. PM me an email address and I'll send it to you.

 

Fun pm sent

 

Wow! That's a real find!