Parts catalog/3900965 Expansion Plug 3900965 Expansion Plug CUMMINSDCEC Contact supplier Product information Parts Number3900965 Expansion Plug Parts Name ClassificationCUMMINSClassificationDCEC Last updated02 Nov 2026 Product photos & details CUMMINS DCEC 3900965 Expansion Plug Send an inquiry Ask the supplier about this part. Fields marked * are required. Name * Email * Phone * Company Message * Leave this empty Send inquiry Your contact details and message will be shared with this supplier to respond to your inquiry.