This is A NEW Conversion Gasket Set with crankshaft seals for IH Tractors with engines:
Diesel: D166, D188
This Gasket Kit fits IH Tractor models:
I'm also available via phone or email to help with proper installation before you get started. (Email normally works best for me).
Check out my store for other IH parts. I have over 30 yrs. experience of rebuilding IH tractors and motors and have many parts available. Email your questions and I can probably help you.