Spark Plugs Autolite 386 for International Farmall IHC box of 4

I rebuilt the engine on an old Farmall 100 that hadn't ran 25 years. I replaced the old plugs with these before starting it for the first time. It fired up on the first crank and idled perfectly smooth. Super happy with these. They MUST be gapped before using as the gap was completely closed up on all four of mine but I always check gap before using any plugs so it wasn't a big deal but something to be aware of. Don't just put them in with checking.

Just what the doctor ordered for my 1955 IH Super A. Heavy fat old fashioned plugs, the weight of the box is your first clue.No ounces were shaved off these plugs for sure. Nice finish on them also.Will be used with an electronic conversion kit and hotter coil for a much hotter spark,these heavyweights look up to the task.

Worked great on my Ferguson TO-35 has her purring like a kitten

Prompt shipping- good price-good quality - works fine for my antique Formal tractor - would buy again

Arrived on time, use to replace the champion plugs on the H farmall