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PAI Industries · Engine
171807
In stock · ships from Knoxville
This is a main bearing kit for Cummins 4B, ISB, and QSB series diesel engines.
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Verified fitment for 3 applications
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All confirmed applications for this part number.
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Requires crankshaft journals machined 0.010" (0.25 mm) undersize. Verify engine series and journal size before ordering.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 6 of 6.
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The bearings are designed to be used when the crankshaft main journals have been machined 0.010 inch (0.25 mm) undersize to restore proper oil clearance. Replacing main bearings during an engine overhaul is critical to prevent crankcase damage and maintain engine oil pressure.
Part Number: 171807
MAIN BEARING KIT
Vendor: PAI Industries
Dealer: KP Services Crossville
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