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UNT DSP403554441-C

DIFFERENTIAL CORE

The UNT DSP403554441-C is a core (used, rebuildable unit) of a Dana Spicer DSP40 front differential, originally remanufactured by Valley Truck Parts. This heavy-duty differential features a 3.55:1 gear ratio, 44-spline input, 41-spline axles, and an air-locking power divider for on-demand front axle engagement. It is typically replaced due to worn gears, bearings, or seal leaks causing noise, vibration, or loss of four-wheel drive. A core like this is returned to the rebuilder as a credit towards a remanufactured unit. The core must be complete and rebuildable to qualify for core deposit return.