Here's the PATC part number -700GS. They call it a "Speedometer gear housing seal". Neither the AMC or MOPAR part numbers listed above pull up the part in their system and the links above just take you to the main page not to the specific part you will need.
Updated price is $1.75 plus shipping.
I hope this fixes my problem. So tired of oil running up the speedo cable and dumping oil in the tub . . .
1986 CJ-7 Laredo, 258, AX15, AC Dana 30/44, Ox Lockers, Howell TBI, DUI, 4.5" RE YJ Springs, 1.25" BL, clocked & twin-sticked Dana 300 with Lomax 4-1, 4.10s, 33s, PB, 8000# winch, YJ Roll Bar, Factory 20 gallon tank.
1984 CJ-7 Renegade, 258, T4, AC, Howell TBI, DUI, 2.5" OME YJ Springs, 3.53, 31s, PB, Warn bumpers & 8000# winch, Factory 20 gallon tank
1984 CJ-7 Renegade, 258, Auto, AC, 3.31s, PB, Factory 20 gallon tank, Bone stock except for 31s