This came from my uncle's estate, I know he had a 4430.
Made by Stewart Warner for John Deere.
It appears to have come from an implement junk yard, given the tag.
As far as what it fits, I'm going by what the tag tells me, but research says it fits most of the diesel tractors of that era.
I have a cable (listed separately) that I hooked up to this tach. I could not turn the cable, even with pliers.
Structurally sound with good glass and bright face, but selling this As Is for parts or repair.
This will be carefully packaged and shipped no later than the weekend following receipt of payment, usually within 48 hours.
Always glad to combine shipping.