If you use the Sherwood impeller you will have a clearance issue with the end cover and the impeller will heat up and melt
OEM Reference : Cummins 3973819
Crankshaft Gear (48 Teeth) (Steel)
PACK OF 2 PAI 431260 NAVISTAR 1818717C4 GASKET
MARCH® 0150-0103-0200 IMPELLER RYTSS SHELL
MaxiForce® John Deere® OK20291-20/10 Kit, O/H Engine 6.619Mid 4305230 If you use the SherwoodProduct Details : Select John Deere Applications. OEM Reference : John Deere OK20291 20 10. Please do not hesitate to contact us with your vehicle, engine and or part(s) details to determine if this product is appropriate for your particular engine and or application. MaxiForce : Brand New, Premium Replacement Parts Coverage for Caterpillar, Cummins, International Harvester, John Deere, Komatsu, Mitsubishi, Navistar, Perkins, Shibaura, Thermo King and