Cummins ISC, Engine Misc Parts, (GOOD USED) Cummins ISC 3967749REV03FACK Air Transfer Elbow Tube For Sale, Intake Elbow off a Cummins ISC Engine, Elbow shape, 3967749 REV 03 FACK, FACK, 03FACK, LT5116, Part# 3967749-REV-03-FACK, Stock # 4622