Connecting Rod Bushing Cummins Engine ISL – Engine QSL
The bushing is pressed into the connecting rod foot and forms the sliding surface between the connecting rod and the piston pin. It serves to maintain proper piston alignment, reduce friction and wear, and distribute the loads transmitted from the piston pin to the connecting rod. Some aftermarket versions require boring or finishing after installation to achieve the correct pin tolerance.
It is used in various Cummins applications in the C, ISC, ISL, QSC, and QSL families.
Final compatibility must be verified using the ESN (Engine Serial Number), CPL, and the QuickServe/Cummins parts catalog, because not all configurations of the same engine necessarily use the same connecting rod or bushing.
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 used when the crankshaft connecting rod journal has been ground down by 0.010″.
Replacement parts for Cummins C / ISC / QSC / ISL / QSL applications.
Before the sale, it’s a good idea to check the ESN, CPL, and the actual length of the crankshaft.