It is installed between the connecting rod head and the crankshaft connecting rod journal. It creates a lubricated sliding surface that reduces friction and wear and maintains the proper clearance between the connecting rod and the crankshaft. It is a standard (STD) bronze bushing. It should not be confused with undersize or repair versions intended for ground crankshafts.
Replacement parts for Cummins C / ISC / QSC / ISL / QSL applications
This is a standard (STD) bronze bushing. It should not be confused with undersize or repair versions intended for honed crankshafts. Before purchasing, I recommend checking the ESN (Engine Serial Number), CPL, and the crankshaft journal diameter.
Cummins notes that some ISL kits include two different oil pan gaskets due to varying configurations.
The ESN remains the most important check,
because the same engine model can be fitted with different
parts depending on the year of manufacture or the CPL.
Parts Number OEM Reference : Cummins# 4983588,3966840, 3948072, 3942723, 5449240.5449240
The ESN remains the most important check,
because the same engine model can be fitted with different
parts depending on the year of manufacture or the CPL.