If replacing original radiator on the 4020 s/n <090999 you will also need to order R39516 Right Hand Upper tie-down rod, not offered. Does not have holes in top tank for shut off valves used on propane modles. 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. The radiator has 8 fins per inch and 4 rows of tubes. It is 24.5" tall and the core size is 19.5" wide, but does not fit propane models. This radiator fits the John Deere Tractor 4000 (SN 201000-> (gas or diesel) or 4020 (gas or diesel)). (NOTE: replaces AR40832 or AR46434)n• The A & I radiator does not have holes in tank for shut off valves to fit propane models.nDim A (1) Core Size: 19.50″ WidenDim B (2) 24.50″ HighnDim C (3) 4 Rows of TubesnDim D (4) 8 Fins per InchnReplaces AR40832, AR46434 mega-cross: (1 to 12 of 12) nReplaces: AR40832 JOHN DEEREnAR46434 JOHN DEEREn219520 NORTHERN FACTORY SALESn219554 NORTHERN FACTORY SALESnCrossed From: AMAR49454 A & I MEGA-CROSSnAR5548 A & I MEGA-CROSSnHR49454 A & I MEGA-CROSSnNR9554 A & I MEGA-CROSSnTP-AR49454 A & I MEGA-CROSSnWN-AR49454 A & I MEGA-CROSSnWN-AR49454 A & I MEGA-CROSSnWN-AR49454 WORTHINGTON MOWER CO sections and models: (1 to 2 of 2) nCooling Systems > Radiators and Related PartsnJohn Deere TRACTOR: 4000 (GAS / DSL)nJohn Deere TRACTOR: 4020 (SN 201000->, GAS / DSL) Manufactured by D&D Power Drive