HOSE PLAIN 3687223

3687223 is a Cummins OEM part number for an Exhaust Gas Recirculation (EGR) plain/reducer hose. It is constructed from heavy-duty, high-temperature reinforced silicone (measuring 2.25" to 1.875") and is primarily used on 15-liter Cummins ISX/QSX engines

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Dimensions vary by variant.