Applies to: ENGINE 900.920/921 in MODEL 437.421/426 ## as of 216030 with CODE M89 (Intake air preheating system) Vehicles for non-civilian use ENGINE 904.952/953 in MODEL 437.420/425 ## as of 216030 with CODE M89 (Intake air preheating system) Vehicles for non-civilian use ENGINE 924.916 in MODEL 437.420/425/430/435 ## as of 216030 with CODE M89 (Intake air preheating system) Vehicles for non-civilian use ENGINE 924.916 in MODEL 437.436 with BODY 425.852 with CODE F10 (Cab protected) with CODE M89 (Intake air pre