It is a connecting rod bolt nut used to secure the connecting rod cap to the connecting rod body. It holds the connecting rod bolt—and thus the connecting rod cap—tightly in place on the crankshaft; it is a critical component of the connecting rod assembly.
Used on 6C / 6CT 8.3, 6CTA 8.3, ISC 8.3, and QSC 8.3 motors, as well as certain ISL, QSL, and M11 applications.
However, this must be verified using the ESN (Engine Serial Number), CPL, and the QuickServe catalog before placing the order.
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.