One New Aftermarket Offset Exhaust Manifold Adapter Fits International Models: 2606, 460, 560, 606, 660, 3616 Technical Information: – Gas Engines – This exhaust manifold adapter is designed for use with the IHS1619 exhaust pipe. – This is a 2″ NPT adapter designed to fit our IHS004 or IHS963 manifolds that offsets the pipe and reduces the diameter so the exhaust pipe is in the same location and is the same diameter as the factory exhaust manifold for the 460, 560, 606, 660, 2606 or 3616. Models This Part Fits: 2606, 460, 560, 606, 660, C282, C263 Gas Engines Reference Numbers: RAPIHS1236