Product Overview
3600687 3600623 ISM QSM Fuel Return Pipe. Product type: Fuel Return Pipe. Part number(s): 3600687, 3600623. Engine/model: ISM, QSM, M11. Application notes: fuel return pipe for Cummins ISM, QSM, M11 engine applications. Please verify final fitment by part number, engine serial number, and application before publishing or ordering.











