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This is a Sealing Washer for Cummins 4BT3.9, 6BT5.9, ISB3.9, ISB4.5, QSB3.9 and QSB4.5 engines. This high quality aftermarket replacement part is guaranteed to meet OEM specifications and is shipped with a 12-month warranty.
SEALING WASHER - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9 / QSB4.5
Genuine Cummins Part
$9.83
VALVE,CHECK
$187.48
RETURN LINE GASKET - C8.3-250 / B5.9M / QSB5.9 / 6B5.9 / B3.9 130 / C8.3GEN
$1.54
INJECTOR SEAL RING - B5.9M / 6B5.9 / 4BT3.9-C100 / B5.9-175
$0.77
EXHAUST MANIFOLD GASKET - B SERIES / ISB / QSB
$1.57
RING SEAL - 4BT / 6BT
$2.18
