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Replaces old part number DS-3903927.
This item is a new replacement part shipped with a 12-month warranty.
Do not hesitate to call us at 888.687.0539 if you have any questions about this item. As always, your satisfaction is guaranteed!
O RING
Genuine Cummins Part
$10.70
WASHER
$4.63
RING SEAL
$0.83
PRESSURE REGULATOR PLUNGER - 4B3.9 / 6B5.9 / B5.9 / ISB3.9 / ISB5.9G / QSB3.9
$18.78
