The company said in a release Tuesday that 443,712 2013-17 model year trucks-including Ram 2500 and 3500 pickups and 3500, 4500, and 5500 chassis cab trucks-were affected. The recall is limited to trucks with 6.7-liter engines and the company no longer equips vehicles with that water pump.
Fiat Chrysler is recalling almost 500,000 pickup trucks over a possible fire risk.
FCA issued the recall after it was determined that the water pumps could overheat in certain conditions posing an engine-compartment fire.
Another 46,220 Ram trucks in Canada and 4,485 units outside of North America are included in the recall.
The FCA spokesman said no estimates of the likely cost of the recall or number of faulty pumps is available. Customers are warned to consult their dealers immediately if they get a warning light in their instrument cluster. The vast majority of the impacted units are in the U.S. The action isn't the first one this year involving Ram pickups.
The automaker is not aware of any injuries caused by the issue and has stopped using the part. Dealerships will inspect the water pump and replace it, if needed.
Owners who have questions are encouraged to call the FCA US Recall Information Center at (800)-853-1403.