Navistar, the maker of the Power Stroke diesel engine for Ford, has said that it will stop shipping engines to the automaker effective immediately. The two companies have had a contentious relationship as of late, with Ford filing a lawsuit against Navistar for not complying with the terms of its warranty-sharing agreement and "unjustifiably" raising prices for its engines.
Navistar has countered by saying that it has not received payment from Ford for its engines since the suit was filed in January. The long-term ramifications of this dispute are not clear, but it's possible that Ford may find an alternate vendor for its diesel engines for the Super Duty in the short-term, or may eventually move development of the engines in-house to prevent a similar situation in the future.
Our Take: What kind of engine would you like to see in a Super Duty? If you've been wanting an engine choice other than the Navistar-supplied Power Stroke, your wish might come true in the not-too-distant future.