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Crown gear wbk 3901774

Flywheel ring gear WBK 3901774 – durable part ensuring reliable engine start in construction and agricultural machinery.

  • Condition: new
  • SKU: 32942
Ocena 4,4

54.37 EURNet

- +

Product description


Flywheel Ring Gear WBK 3901774

Description

The WBK 3901774 flywheel ring gear is made of durable alloy steel and designed to ensure proper engagement between the flywheel and the starter motor. Its teeth transfer the starting torque, enabling smooth and reliable engine ignition. Surface heat treatment provides high wear resistance and extended service life, even under demanding operating conditions. The product is widely used in diesel engines of construction, agricultural, and industrial machinery.

Technical Data

  • Material: hardened alloy steel
  • Outer diameter: approx. 450 mm (depending on engine model)
  • Number of teeth: matched to starter specifications
  • Heat treatment: surface hardening
  • Weight: approx. 4–6 kg

Application

The WBK 3901774 ring gear is used in internal combustion engines, playing a crucial role in the starting process. It is applied in construction machinery (excavators, loaders), agricultural vehicles (tractors, harvesters), and industrial equipment requiring reliable power units. Thanks to precisely manufactured teeth, it works directly with the starter, ensuring fast and secure engine start.

Properties

  • High resistance to wear and mechanical damage
  • Stable transfer of starting torque
  • Easy installation on the flywheel
  • Compliance with original engine specifications
  • Long service life under intensive use

Specification

Specification Value
name Crown gear
mark wbk
part number 3901774
condition new
outer diameter 450 mm
weight 4–6 kg

Reference numbers

List of reviews:

Jakub

2025-07-28

Bardzo solidny produkt, idealnie pasuje do mojej maszyny. Wysoka jakość wykonania, polecam!
Joanna

2025-07-10

Zamówienie zrealizowane sprawnie, a produkt zgodny z opisem. Oczekuję na dalsze użytkowanie.
Isabella

2025-05-25

The part arrived as described and fits well. I have not yet tested its performance extensively.
Bartosz

2025-04-02

Produkt spełnia swoje podstawowe funkcje. Montaż przebiegł bez problemów.
Anna

2025-03-28

Część wygląda solidnie, jednak nie miałem jeszcze okazji jej przetestować w praktyce.

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