Connecting Rod Cummins 3939407

High-Performance Connecting Rod for Cummins B4.5 Engines

The Cummins 3939407 Engine Connecting Rod is a critical mechanical component designed to bridge the gap between the piston and the crankshaft. By converting linear piston motion into rotational force, this rod is fundamental to the power generation and structural integrity of your heavy-duty diesel engine.

Precision Engineering & Durability

Manufactured from high-strength forged steel, the 3939407 is built to withstand the extreme combustion pressures and thermal stresses found in industrial and agricultural applications. Its design focuses on optimal weight distribution and balance, reducing internal vibration and extending the service life of engine bearings.

Key Features and Benefits:

• Robust Construction: Forged steel alloy provides superior resistance to fatigue and mechanical failure.
• Exact Fitment: Specifically engineered for the Cummins B4.5 engine series to ensure seamless integration.
• Enhanced Efficiency: Precision machining minimizes friction and ensures smooth energy transfer to the crankshaft.
• Reliability: Designed to meet rigorous heavy-duty standards, ensuring consistent performance in demanding environments.

Technical Specifications:

• Weight: 4.1 lbs
• Compatibility: Cummins B4.5 Series Engines
• Material: Forged Steel / High-Strength Alloy