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Crankcase for engine Cummins 3.9 3939408

Cummins 3.9 engine block (3939408) – durable, reliable base component for repairs and rebuilds of construction, agricultural, and industrial engines.

  • Condition: used
  • SKU: 71743
Ocena 4,8

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Product description

Cummins 3.9 Engine Block – 3939408

The engine block is the core component of the power unit, serving as the foundation for all other parts. The Cummins 3.9 engine block, part number 3939408, is designed for durability, reliability, and resistance to high loads typical of combustion engines used in construction machinery, agricultural equipment, and industrial vehicles.

Product description

The engine block maintains the geometry of the crank-piston system and ensures optimal operating conditions for cylinders, pistons, and the crankshaft. It is made of high-strength cast iron, ensuring dimensional stability, heat resistance, and long service life. The design allows easy installation and full compatibility with genuine Cummins components.

Technical data

  • Part number: 3939408
  • Engine type: Cummins 3.9
  • Material: high-strength cast iron
  • Construction: cylinder block with crankshaft and camshaft seats
  • Resistance: designed for extreme pressure and temperature
  • Weight: approx. 85–110 kg depending on version

Applications

The Cummins 3.9 engine block is used in:
  • construction machinery – excavators, loaders, bulldozers,
  • agricultural equipment – tractors, harvesters, balers,
  • industrial vehicles – generators, aggregates, transport vehicles,
  • engine overhaul and rebuilding projects for Cummins 3.9 series.

Properties and benefits

  • OEM specification – guaranteed fit and compatibility.
  • Durability – cast iron construction resistant to heavy-duty operation.
  • Operational stability – ensures proper cooling and lubrication.
  • Easy installation – precise factory-standard dimensions.
  • Rebuild optimization – perfect base for engine overhauls.

Specification

Specification Value
name Crankcase for engine
mark Cummins
type 3.9
part number 3939408
condition used
material high-strength cast iron
weight 85-110 kg
engine type 3.9

Reference numbers

List of reviews:

Gary

2025-09-16

Grzegorz

2025-09-12

Julian

2025-09-09

Henryk

2025-09-07

Lech

2025-09-06

Isabella

2025-05-10

Write a review.

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