Trying to find the OEM diesel fuel cap for the 80 series. I don't actually have an HDJ80, but my fzj80 has been swapped to a 1HD-T so I definitely want a cap that says "diesel" loud and clear on it. Got an off-brand cap coming in the mail for now, but would eventually like to find the real OEM for this. Anyone know the part # for this or have a lead on how to figure this out?