This is a A-737163M1 Bypass Hose PN: 737163M1Main Description As Following : A-737163M1 Bypass Hose P.N: 737163M1 New by-pass hose with an inside diameter of 1.75". Stocked As: A-747946M91 Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : New by-pass hose with an inside diameter of 1.75".