This is the PCV vale breather cup that is attached to the PCV valve on the side vent cover. This is a new old stock part, get them while they last. Made in the USA. Fits the L Head and F Head 134 engines. Fits:
My Spicer axles (Dana 25) were too tight a fit for my spider gears. The machine shop couldn’t do a thing with the axles until a produced the proper replacement gears so I called Jeepster Man on a Friday and they had the gears dropped ship to me so I could give them to the machine shop on Wednesday. Great service.