A 2018 Ford F-150 “King Ranch” pickup truck is displayed during the North American International Auto Show in Detroit, Michigan, U.S., January 10, 2017. (REUTERS/Mark Blinch)

Production of the F-150, the most important vehicle in Ford’s showrooms, has ground to a halt.

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Ford on Wednesday was forced to suspend all production of the F-150 after a fire at a key supplier’s manufacturing facility. It remained unclear how long the plants in Kansas City, Missouri, and Dearborn, Michigan, will need to wait before building F-150s again. Ford is working with other suppliers to minimize the disruption.

Despite the factory downtime, dealers have enough trucks on their lots to satisfy demand until production resumes, Ford said. The company also said near-term financial results could suffer, but it doesn’t expect the shutdown to hurt its full-year profit.

The assurance likely came as a relief to investors, given that F-Series trucks account for most of Ford’s profits.

Morgan Stanley analyst Adam Jonas has estimated that the F-Series, which includes F-150 and Super Duty trucks and remains the best-selling lineup in America, is responsible for 90% of the automaker’s global profits. Jonas recently said the F-150 alone may be worth more than the whole company amid a slump in Ford shares.

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