Our new radiator is designed and built to precise dimensional specifications to ensure an exact fit. Each radiator has a stamped brass tank, undergoes a rigorous quality inspection, and is 100% leak tested. This radiator has 7 fins per inch and 5 rows of tubes. It is 30.375″ tall and the core size is 26″ wide. This radiator fits the John Deere Tractor 4640. (NOTE: replaces AR79456 or AR90741)nDim A (1) Core Size: 26.0″ WidenDim B (2) 30.375″ HighnDim C (3) 5 Rows of TubesnDim D (4) 7 Fins per InchnReplaces AR79456, AR90741 mega-cross: (1 to 9 of 9) nReplaces: AR79456 JOHN DEEREnAR90741 JOHN DEEREn212093 NORTHERN FACTORY SALESn219563 NORTHERN FACTORY SALESnCrossed From: AR5578 A & I MEGA-CROSSnTP-RE21896 A & I MEGA-CROSSnWN-RE21896 A & I MEGA-CROSSnWN-RE21896 A & I MEGA-CROSSn101775 A & I MEGA-CROSS sections and models: (1 to 1 of 1) nCooling Systems > Radiators and Related PartsnJohn Deere TRACTOR: 4640 available manuals: (1 to 2 of 2) nItem Number DescriptionnJohn Deere TRACTOR: 4640nA-JD-O-OMR65463 JD Operator Manual (Diesel)nA-SMJD202 John Deere Shop Manual Manufactured by D&D Power Drive