This exhaust adapter is designed for use with 366780R1 exhaust pipe.
This is a 2" NPT adapter designed to offset the pipe and steps down the diameter so that the exhaust pipe is in the same place and has the same diameter as a factory exhaust manifold for a 460, 560, 606, 660, 2606 or 3616.
It will fit IH gas tractors:
460 - gas, C221
560 - gas, C263, C282
606 - gas, C263, C282
660 - gas, C263, C282
Without this adapter it will be necessary to cut the hole larger in the hood because the new manifolds have a larger exhaust hole than the original C221 and C263 had. I have new manifolds listed. Call or email before ordering if you aren't sure if you need this adapter.