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Cummins · Hardware & Fasteners
3922794CUM
In stock · ships from Knoxville
This is a Cummins O-ring, also called a turbocharger hose seal ring.
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Used at the turbocharger hose connection. Exact application can vary by engine serial number; confirm with your engine’s parts catalog before ordering.
Part data verified against 5 catalog sources
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It is a circular rubber seal that fits inside the turbocharger hose coupling to create a leak-proof joint, preventing oil or boost air from escaping. Over time, heat and pressure can harden or crack the O-ring, causing visible oil seepage at the turbo connection, so it’s commonly replaced when servicing the turbocharger or when a leak is detected. The seal is used on several Cummins diesel engines, including the ISX and 5.9-liter B series.
Part Number: 3922794CUM
SEAL
Dealer: Knox Trailers
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