Radiator
CTPA-AH124726 Replacement Part to Fit:  John Deere For Models: 6620, 6622, 6600 W/ 6404 Eng. Core: 32.625" H/ 27.750" W, 5 rows of tubes, 5 fins per inch. Replaces: AH87990, AH112173, AH19911  Price:  $720.15  Buyers Club Price:  $648.13