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The Cummins DS-4089731 water pump kit can be used on ISB and QSB engines.
This high quality aftermarket replacement part is guaranteed to meet OEM specifications and is shipped with a 12-month warranty.
MAIN BEARING SET - 6B (STANDARD)
$63.56
WATER PUMP KIT - B SERIES / ISB SERIES (W/ MOUNTING GASKET)
$116.52
OIL PUMP - B SERIES / ISB / QSB
$288.08
