Don't know the number off the top of my head, but it is the same as on the civilian WM300 so you can go to your local autoparts place and "pretend" that you have a 1968 WM300 for instance
...
Or, for a much better price, just give AB Linn a call and have him send you a handfull... last time I asked, he had a bunch of them in stock, and he will have the lowest prices (and it will be the "real deal").
A B Linn Inc. M-37, M-715, jeep parts. 7022 Jones Road, Salisbury, NC 28147.
704-637-9076.
ablinn@salisbury.net