PRODUCT NOTES
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.
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As always, your satisfaction is guaranteed!