IHS1236 Offset Exhaust Manifold Adapter - Fits InternationalOne New Aftermarket Offset Exhaust Manifold Adapter Fits International Models: 2606, 460, 560, 606, 660, 3616 Tech Info: Gas Engines This exhaust adapter is designed for use with IHS1619 exhaust pipe. This is a 2" NPT adapter designed to fit our IHS004 or IHS963 manifolds and offsets 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