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Belt tensioner Cummins 3974102

Cummins Belt Tensioner 3974102 – durable and reliable drive system part for QSC, QSL, ISL engines, ensuring proper belt tension and long service life.

  • Condition: used
  • SKU: 69657
Ocena 4,8

58.05 EURNet

- +

Product description

Cummins Belt Tensioner 3974102

Product Description

The Cummins 3974102 belt tensioner is a high-quality drive system component used in Cummins QSC, QSL, and ISL series engines. It ensures proper tension of the V-belt or multi-ribbed belt, enabling reliable operation of engine accessories such as the alternator, water pump, and compressor. Thanks to its durable construction and precise spring mechanism, the tensioner eliminates belt slippage and reduces wear.

Technical Data

  • Part number: 3974102
  • Weight: 1.86 kg
  • Length: 104.9 mm
  • Width: 104.9 mm
  • Height: 209.55 mm

Application

The 3974102 belt tensioner is widely used in Cummins engines installed in construction machinery, industrial equipment, and heavy-duty vehicles. It is found in Terex excavators, JCB loaders, Tigercat forestry machines, Dynapac road rollers, Dressta bulldozers, and many other machines powered by QSC8.3, QSL8.9, and ISL9 engines. Its universality and durability make it a trusted choice in construction, transport, and industrial sectors.

Features

  • Durable design for long service life.
  • Optimal belt tension preventing slippage and excessive wear.
  • Easy installation with precise dimensions.
  • Compatibility with a wide range of Cummins engines.
  • High resistance to loads and harsh working conditions.

Specification

Specification Value
name Belt tensioner
mark Cummins
part number 3974102
condition used
weight 1.86 kg
length 104.9 mm
width 104.9 mm
height 209.55 mm

Reference numbers

List of reviews:

Małgorzata

2025-09-26

Katarzyna

2025-09-23

Dennis

2025-09-15

Anthony

2025-09-06

Eryk

2025-04-08

Write a review.

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