One New Aftermarket Replacement LP Manifold Fits International / FARMALL Models: M, MD, MDV, MV, Super M, Super MD, Super MDV, Super MV, 400, 450, MTA, Super MTA, Super W6, I6 Threaded outlet is 2 1/4″ in diameter This IH Propane Manifold will increase engine horsepower on gas powered tractors ONLY—You may have to drill the carburetor flange mounting holes to 1/2″ to attach to this IH Propane Manifold Not Included—but available separately in our other listings: Gasket Kit (IHS003GK) and Exhaust Pipe (764857M1). Search our store for these part numbers Replaces Part Number: 358308R11 Reference Numbers: 358308R11, 358308R11-A