Ed, Jeg's has ($5)them.On EBAY its item # 200600727747.I have found that you need to bore the hole 1/32 larger as the early Ford bulb is fatter than the temp gauge bulbs on the market today.VDO gauges also has them and some NAPA stores carry that line.Its $8 there.Make sure the male end is correct pipe thread as there are 2 sizes.