PRODUCT NOTES
Replaces old part numbers DS-3903301 and DS-3920020.
This is a Thermostat Seal for Cummins B5.9M, B160, 6B5.9, B5.9-M220, QSB4.5, B3.9-M250 and QSB-110C engines. This item is a new replacement part shipped with a 12-month warranty.
Call us at 888.687.0539 if you have any questions about this item.
As always, your satisfaction is guaranteed!