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.
transfers combustion force from the piston to the crankshaft, converting piston reciprocating motion into crankshaft rotation.
For Cummins 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, and ISL 8.9 / 9 engines. Some aftermarket catalogs also extend the application to QSC 8.3 and QSL 9 Marine / Industrial engines.
Always verify compatibility using the Engine Serial Number (ESN), CPL, and the original connecting rod number before installation.