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Genuine Cummins hump hose, part number 3641726, for QSK series aftercooler and charge air connections. The hump section allows for movement and thermal expansion between the aftercooler and the piping it connects.
Key Features:
Specifications:
Compatibility / Fitment:
Select this hose by inside diameter and length, not by engine model alone. Cummins uses several hump hoses in the QSK charge air system and they differ in size.
Measure the hose you are replacing and match the part number before ordering. If your existing hose carries a different number, contact us before purchasing.
What is not included: clamps are not supplied with this hose and must be ordered separately.
Conclusion:
Cummins 3641726 is the genuine hump hose for QSK aftercooler and charge air connections. Match the part number on the hose you are replacing — the QSK charge air system uses several sizes and they are difficult to distinguish once removed.