3901430 Cummins Connecting Rod Bearing For C8.3 Series Engines

Specification:

Key Features:

✅ STD connecting rod bearing, for 6CT8.3 engine overhaul

✅ Bimetallic structure, impact & heat resistant for heavy-duty continuous operation

✅ Tight tolerance to maintain proper clearance, reduce oil consumption and bearing seizure

✅ Direct replacement, fits ISC/QSC8.3 for construction & generator applications

Application:

✅Applied to land heavy-duty equipment including excavators, heavy trucks, stationary generator sets, motor graders.

 Why Choose Us?

✔️ Over 10 years as Cummins parts agent, genuine OEM parts with traceability available
✔️ Bulk stock, competitive price, supply full engine overhaul kits

✔️ Professional technical support: ESN check, size selection & interchange verification
✔️ Shipment from global ports, export packaging for smooth customs clearance

FAQ

Q1: What is the relation between 3901430 and 3950661? Are they interchangeable?
A1: 3901430 is the old STD connecting rod bearing part number. 3950661 is its upgraded replacement. They share identical mounting dimensions and can be swapped directly. 3901430 is an old part number and phased out in some markets. 3950661 is recommended.

Q2: How many pieces in one set?
A2: One set serves a complete 6-cylinder engine, 6 pairs, total 12 pcs connecting rod bearings.

Q3: What precautions for installation? 

A3: Clean crankshaft rod journals before installation; check crankshaft roundness; tighten rod bolts per OEM torque specs. Replace rod bolts together with bearings and keep engine oil clean.