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Re: Ford 6.7 Engine idled exhaust fluid fault, trying to clear
Posted to HD/Fleet Forum on 2/2/2020 1 Reply

"Narrow" frames are straight frame rails over the rear with no bends and found in HD cab chassis set ups. Wide frames are more conventional with bends to accommodate axles. Fuel tanks in narrow frames usually go from frame rail to frame rail vs. hanging off on... Login to read more.

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