Cummins connecting rod 3971394 is a critical forged engine component built for Cummins 6CT8.3, 6C8.3, QSC8.3 diesel engines. It transfers piston force to crankshaft reliably for heavy‑duty trucks, excavators, wheel loaders and generator sets.
CUMMINS
4943979
CON ROD
ISDE
CUMMINS
4944670/3971393/3979744/4944887
CON ROD
L375/T375
CUMMINS
4891176/4898808/4942979/4894891
CON ROD
QSB5.9
High‑strength forged alloy steel construction, heat‑treated for heavy‑load fatigue resistance
Precision machined big‑end and small‑end bore, pre‑installed bronze bushing for piston pin
Strict OE dimension compliance, direct OEM replacement for part number 3971394, no modification required
Tight manufacturing tolerance, reduces engine vibration and noise under continuous working
Perfect for engine rebuild, overhaul, spare‑parts stocking for repair workshops and distributors
Every unit inspected before shipment, stable performance for long‑time heavy‑duty operation
