644B - LOADER, FOUR-WHEEL DRIVE 20 COOLING SYSTEM ENGINE COOLANT HEATER (110 VOLT) (6531) [01D24] For full view, you need register Parts on group ENGINE COOLANT HEATER (110 VOLT) (6531) [01D24]: Pos. Part No Qty Parts name Comments 1. AR50411 [1] Wiring Lead 2. R54123 [1] Adapter Fitting 3. U13639 [1] O-Ring 4. R47693 [1] Gasket 5. RE504122 [1] Coolant Heater (110 VOLT) (SUB FOR AR62399) 6. R44302 [1] Tie Band 7. RE227949 [1] Coolant Heater (USE WITH R80401) (SUB FOR AR62492) (WHOLEGOODS)