Product Overview
4997663 ISB QSB ISB6.7 Fuel Return Pipe. Product type: Fuel Return Pipe. Part number(s): 4997663. Engine/model: ISB, QSB, ISB6.7. Application notes: fuel return pipe for Cummins ISB, QSB, ISB6.7 engine applications. Please verify final fitment by part number, engine serial number, and application before publishing or ordering.








