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Piston pin Engine / Motor KMP 4BT3.9 / 6BT5.9 3934047

KMP piston pin for Cummins 4BT3.9 / 6BT5.9 – durable, precise and wear-resistant element of the crank-piston system.

  • Condition: new
  • SKU: 25139
Ocena 4,9

9.50 EURNet

- +

Product description

Piston pin KMP 4BT3.9 / 6BT5.9 – durability and precision

The piston pin is one of the key components in the construction of an internal combustion engine. The KMP product, dedicated to 4BT3.9 and 6BT5.9 units, stands out with high resistance to mechanical loads and long service life. Thanks to precise manufacturing, it ensures perfect transfer of forces between the piston and the connecting rod, which translates into stable and reliable engine operation.

Description

The piston pin serves as a connector between the piston and the connecting rod, transferring huge loads resulting from cylinder operation. Made of high-quality steel, resistant to wear and deformation, it guarantees long-lasting use even under the toughest conditions. The KMP product meets OEM quality standards, making it a safe replacement for original Cummins parts.

Technical data

  • Material: high-quality steel
  • Outer diameter: matched to 4BT3.9 / 6BT5.9 pistons
  • Heat treatment: hardened for increased durability
  • Resistance to dynamic loads: high
  • Compatibility: Cummins 4BT3.9, 6BT5.9 engines

Application

The KMP piston pin is used in Cummins engines installed in construction machinery, agricultural equipment, power generators and commercial vehicles. Thanks to its durability and precision, it is suitable both for new engines and for engine overhauls.

Properties

  • High wear and abrasion resistance
  • Stable transfer of forces between piston and connecting rod
  • Easy installation without additional machining
  • Long service life under harsh working conditions
  • OEM quality standards compliant

Specification

Specification Value
name Piston pin Engine / Motor
mark KMP
type 4BT3.9 / 6BT5.9
part number 3934047
condition new
outer diameter matched to 4BT3.9 / 6BT5.9
material high-quality steel
heat treatment hardened
resistance high dynamic load capacity

Reference numbers

List of reviews:

Emily

2025-10-02

The part fits perfectly and works great. Fast shipping and good quality. Highly recommend!
Adam

2025-10-02

Zamówienie zrealizowane sprawnie, a produkt spełnia moje oczekiwania. Na pewno wrócę po więcej części.
Adam

2025-10-02

Bardzo dobra jakość, sworzeń montuje się bez problemów. Zdecydowanie warto zainwestować.
Grzegorz

2025-10-02

Sworzeń działa bez zarzutu, idealnie pasuje do mojego silnika. Szybka dostawa, polecam!
Tomasz

2025-09-04

Część wygląda na solidnie wykonaną. Działa zgodnie z oczekiwaniami.
Tomasz

2025-09-04

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

2025-08-27

Produkt spełnia oczekiwania. Pasuje do maszyny i działa poprawnie.
Marek

2025-04-21

Sworzeń działa bez zarzutu, idealnie pasuje do mojego silnika. Jakość wykonania na wysokim poziomie. Polecam każdemu, kto potrzebuje solidnej części do maszyn budowlanych.

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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Opinion 5/5

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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Znakomita obsługa. Przyjazny i pomocny personel. Płatność, cło i transport zostały zrealizowane szybko i profesjonalnie.

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Tiberiu Demeter

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Opinion 5/5

Oryginalne części, niesamowicie szybka międzynarodowa dostawa ekspresowa i obsługa na najwyższym poziomie. W przyszłości wrócimy, aby ponownie robić interesy. Dziękuję!

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