Cummins
Oil bypass filter element for Cummins 6BTAA5.9-C178
This oil bypass filter element is designed for use in various Cummins engines, including the 6BTAA5.9-C178, KTA38C-1050, QSM11-C335, and QSM19-C700 models. It functions within a secondary circuit to remove fine contaminants from the engine oil.
Compatible models
Specifications
- Part number
- 3889311
- Brand
- Cummins
The oil bypass filter element, identified by part number 3889311, operates within a secondary lubrication circuit. It continuously filters a portion of the engine oil at a higher level of fineness than the primary full-flow filter. By capturing microscopic particles, soot, and combustion residues that bypass the main filter, this component assists in maintaining oil cleanliness over extended operation periods.
This filter element is compatible with several Cummins engine models, specifically the 6BTAA5.9-C178, KTA38C-1050, QSM11-C335, and QSM19-C700. These engines are frequently utilized in heavy machinery and industrial equipment. The component is designed to maintain its structural integrity under the pressure and temperature conditions typical of these engine environments.
Bypass filters serve to supplement the main filtration system by processing a smaller volume of oil through a dense filter medium. This process allows for the removal of extremely small particles without restricting the primary oil flow required for engine lubrication. Regular replacement of this filter element is necessary to prevent the accumulation of contaminants that can lead to accelerated wear of internal engine components such as bearings and camshafts.

