Diff. vent thread size

[576]

Does anyone know the thread/ pitch size on the vent port on the GT500 finned diff. cover? I am looking for the vent port, not the 2 cooler ports. Thanks in advance.

 

[gww52]

Pretty sure it is 1/8 NPT,but I'll check tomorrow.

 

[Grant 302]

It's a weird size, IIRC 7/16-20.

I think I used a 1/8 flare fitting male-male with a cap to plug the axle vent (which uses the same vent) to plug the axle on the GT when I put the vent on the finned cover.