3942579 Connecting Rod Assy for 6BT 6BT5.9 Diesel Excavator Engine

The 3942579 Connecting Rod Assembly is a high-quality replacement engine component designed for compatible 6BT and 6BT5.9 diesel engine applications used in excavators and other construction machinery.

The connecting rod links the piston to the crankshaft and transfers combustion force into rotational motion. Because it operates under repeated high loads, accurate machining, strong material quality, and dependable fitment are essential for stable engine performance.

This replacement connecting rod is manufactured from durable forged metal with precision-machined bearing surfaces, bolt locations, and piston pin bores. It is suitable for engine repair, rebuilding, and overhaul applications where the original connecting rod is worn, bent, cracked, or otherwise damaged.

Product Information

• Product Name: Connecting Rod Assy
• Part Number: 3942579
• Compatible Engine Models: 6BT, 6BT5.9
• Application: Excavator Diesel Engine
• Category: Engine Internal Parts
• Material: Heavy-Duty Forged Metal
• Condition: New Replacement Part

Key Features

• High-Strength Construction
  Built from durable forged material to withstand repeated combustion loads and demanding engine operation.
• Precision-Machined Surfaces
  Accurately machined big-end bore, small-end bore, and mating surfaces help support reliable fitment.
• Stable Load Transfer
  Designed to transfer piston force efficiently to the crankshaft during continuous diesel engine operation.
• Reliable Bearing Fitment
  Machined connecting rod surfaces help provide proper bearing seating and stable crankshaft operation.
• Direct Replacement Design
  Suitable for compatible 3942579 connecting rod replacement applications.
• Long Service Life
  Designed for heavy-duty excavator, construction machinery, and industrial engine environments.

Compatible Applications

This 3942579 connecting rod assembly is commonly used for compatible:

• 6BT Diesel Engine
• 6BT5.9 Diesel Engine
• Excavator Engine Applications
• Construction Machinery
• Heavy Equipment
• Diesel Engine Repair and Rebuilding

Compatibility may vary depending on engine arrangement, machine model, serial number, and production year.

Common Replacement Reasons

A connecting rod may require replacement if there are signs of:

• Engine knocking
• Excessive bearing wear
• Bent connecting rod
• Cracked or damaged rod body
• Worn piston pin bore
• Big-end bore damage
• Abnormal crankshaft vibration
• Low engine compression related to internal damage
• Engine failure following severe overheating or lubrication loss

A damaged connecting rod should be replaced before engine reassembly to reduce the risk of further internal engine damage.

Why Choose JISION Excavator Parts?

JISION supplies replacement parts for excavators, diesel engines, and construction machinery, including connecting rods, pistons, cylinder liners, crankshaft parts, overhaul kits, hydraulic components, and electrical parts.

Our Advantages

• Reliable replacement quality
• Precision-machined engine parts
• Accurate part number matching
• Product inspection before shipment
• Professional excavator parts supply
• Wholesale and bulk order support
• Worldwide shipping service
• Compatibility confirmation support

Ordering & Compatibility Confirmation

Before ordering, please confirm:

• Engine model
• Machine model
• Part number
• Engine serial number
• Connecting rod dimensions
• Photos of the original part

Reference Part Number: 3942579
Engine Models: 6BT / 6BT5.9

If you are unsure whether this connecting rod fits your engine, please send us your engine model, serial number, original part photos, or existing connecting rod markings for compatibility confirmation before shipment.

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3942579 Connecting Rod Assy for 6BT 6BT5.9 Excavator Diesel Engine

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Shop 3942579 connecting rod assy for 6BT and 6BT5.9 diesel excavator engines. Heavy-duty forged replacement engine connecting rod with precision-machined surfaces and reliable fitment.