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Genuine Cummins Part
The 3939381 connecting rod bearing half can be used on the following Cummins engines: 4B3.9, 6B5.9, ISB6.7, QSB4.5, and QSB5.9.
This is a genuine Cummins part shipped with a 12-month warranty.
Also available in aftermarket.
CONNECTING ROD BEARING HALF - QSB4.5 (LOWER, .25 MM O/S)
$5.53