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Valve seal wbk 3921640

Valve stem seal WBK 3921640 – durable sealing solution, reducing oil consumption and emissions, ideal for heavy-duty engine applications.

  • Condition: new
  • SKU: 65431
Ocena 4,8

1.30 EURNet

- +

Product description

Valve Stem Seal WBK 3921640

Product description

The WBK 3921640 valve stem seal is a high-quality component designed to seal valve guides in combustion engines. Its main function is to prevent engine oil from entering the combustion chamber while ensuring proper lubrication of the valve stems. Thanks to precise manufacturing and durable materials, the seal guarantees reliability even under demanding operating conditions. Installing this component improves engine performance, reduces oil consumption and emissions, and extends the service life of valves and the cylinder head.

Technical data

  • Part number: 3921640
  • Inner diameter: matched to the valve stem
  • Outer diameter: matched to the valve guide
  • Material: high-temperature and oil-resistant rubber compound
  • Clamping spring: steel, ensuring tightness at high speeds
  • Category: combustion engine seals

Application

The WBK 3921640 valve stem seal is used in various combustion engines found in construction, agricultural and industrial machinery. It is especially suitable for engines operating under heavy-duty conditions, where resistance to temperature, oils and pressure is required. It can be applied both in regular maintenance and in full engine overhauls.

Properties

  • Resistance to high temperatures and engine oils
  • High elasticity ensuring long-term sealing performance
  • Minimizes risk of oil leakage into the combustion chamber
  • Improves engine performance and reduces oil consumption
  • Easy installation thanks to precise dimensions
  • Extends the lifespan of valves and guides

Specification

Specification Value
name Valve seal
mark wbk
part number 3921640
condition new
inner diameter matched to valve stem
outer diameter matched to valve guide
material oil and heat resistant rubber
spring steel clamping

Reference numbers

List of reviews:

Paweł

2025-08-29

Uszczelniacz sprawdził się doskonale w mojej maszynie. Łatwy montaż i solidne wykonanie. Polecam!
Barbara

2025-07-09

Uszczelniacz działa poprawnie. Nie miałem z nim żadnych trudności podczas instalacji ani użytkowania.
Tomasz

2025-05-03

Produkt jest zgodny z opisem. Używany w maszynie budowlanej, nie zauważyłem żadnych problemów.
Dominik

2025-04-24

Uszczelniacz spełnia swoje podstawowe funkcje. Montaż był prosty, a produkt działa zgodnie z oczekiwaniami.

Write a review.

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Współpraca na wysokim poziomie. Firma na 6. Polecam z czystym sumieniem. Na pewno jeśli będę musiał to skorzystam jeszcze raz. Naprawa Pomp hydrauliki Koparka Terex

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