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Belt tensioner Cummins 3974102

Cummins belt tensioner 3974102 for QSC8.3 and ISL9 engines. Provides stable belt tension, durability and reliability in construction and industrial machinery.

  • Condition: new
  • SKU: 23111
Ocena 5,0

205.74 EURNet

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Product description

Cummins Belt Tensioner 3974102

Description

The Cummins belt tensioner 3974102 is a high-quality drive system component designed for Cummins QSC and ISL series engines. Its role is to maintain proper belt tension, ensuring correct operation of engine accessories such as the alternator, water pump, or air conditioning compressor. With its robust design and durable materials, the tensioner offers long service life and excellent resistance to wear and dynamic loads. Fully compliant with Cummins factory standards, it guarantees reliable performance and safe operation.

Technical data

  • Part number: 3974102
  • Weight: 1.86 kg
  • Dimensions: length 104.9 mm, width 104.9 mm, height 209.55 mm
  • Construction: high-strength steel, roller with bearing
  • Application: Cummins QSC 8.3, ISL 8.9, QSL 9, ISL9 engines
  • Applicable in construction and industrial machinery by Terex, JCB, Tigercat, Hyster, Wirtgen, Dressta and others

Application

The Cummins 3974102 belt tensioner is widely used in engines installed in construction, road, forestry, and agricultural machinery. It maintains optimal tension of the multi-ribbed belt, preventing slippage, misalignment, and excessive wear. By ensuring precise operation, it stabilizes the cooling, charging, and auxiliary hydraulic systems. Commonly used in JCB loaders, Terex dump trucks, Tigercat forestry machines, and Wirtgen rollers and milling machines.

Features

  • Genuine Cummins quality
  • Precision spring mechanism for stable tension
  • High resistance to temperature and dynamic loads
  • Long service life and low maintenance requirements
  • Easy replacement and full compatibility with OEM engines

Specification

Specification Value
name Belt tensioner
mark Cummins
part number 3974102
condition new
weight 1.86 kg
length 104.90 mm
width 104.90 mm
height 209.55 mm

Reference numbers

List of reviews:

John

2025-09-06

Great tensioner! It fits perfectly and works smoothly. Installation was straightforward. Highly recommend for anyone in need of reliable parts.
Artur

2025-09-06

Zamówiłem ten napinacz i jestem zadowolony z jakości. Działa bez zarzutu, a cena jest atrakcyjna. Na pewno wrócę po więcej części.
Dominik

2025-09-06

Bardzo dobry napinacz, idealnie pasuje do mojej maszyny. Montaż był szybki i bezproblemowy. Polecam!
Dawid

2025-07-17

Bardzo dobra jakość, pasuje idealnie do mojej maszyny. Szybka dostawa, jestem zadowolony.
Michał

2025-05-28

Napinacz działa bez zarzutu, łatwy w montażu. Zdecydowanie polecam!
Filip

2025-04-27

Solidny produkt, który spełnia swoje zadanie. Zdecydowanie warto zainwestować w ten napinacz.

Write a review.

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Opinion 5/5

Zakupiony komplet siłowników do Liebherr 564 był w doskonałym stanie, zgodnie z opisem i przesłanymi zdjęciami. Obsługa na wysokim poziomie, bardzo profesjonalna i pomocna – rewelacja. Co więcej, w kontakcie z firmą otrzymałem osobistego opiekuna, który zajmował się sprawą od początku do końca, mogłem również liczyć na bezpłatne doradztwo przy montażu. Szkoda, że w obecnych czasach nie spotyka się zbyt wielu firm z tak profesjonalnym podejściem do klienta. Gorąco polecam.

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