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Crankcase for engine Cummins 3.9 3939408

Cummins 3.9 engine block (3939408) – durable cast iron component for repairs and overhauls of engines in machines and vehicles.

  • Condition: reconditioned
  • SKU: 73702
Ocena 4,8

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Product description

Cummins 3.9 Engine Block 3939408

Description

The Cummins 3.9 engine block with part number 3939408 is a durable and precisely manufactured component designed for rebuilding and repairing power units in construction machinery, industrial equipment, and commercial vehicles. This element plays a key role in ensuring structural rigidity and proper operation of pistons, crankshaft, and valve train. Thanks to high-quality materials and advanced manufacturing technology, the block guarantees long service life and reliable performance even under extreme operating conditions.

Technical Data

  • Part number: 3939408
  • Engine type: Cummins 3.9
  • Material: high-strength cast iron
  • Cylinder seats: precision machined
  • Mounting holes: OEM specification
  • Temperature resistance: up to 250 °C
  • Prepared for cylinder liners and bearings

Application

The engine block is used in a wide range of machines and vehicles powered by Cummins 3.9 units, including excavators, loaders, road machinery, generators, and commercial vehicles. It is suitable for both routine repairs and complete engine overhauls.

Properties

  • Durability – made of cast iron resistant to heavy loads and wear.
  • Precision – accurately machined to ensure perfect fit with other engine components.
  • Compatibility – fully compliant with Cummins OEM specifications for easy installation and reliable operation.
  • Resistance – withstands extreme working conditions, high temperatures, and heavy mechanical loads.
  • Versatility – suitable for many types of construction and industrial machines.

Specification

Specification Value
name Crankcase for engine
mark Cummins
type 3.9
part number 3939408
condition reconditioned
material high-strength cast iron
temperature resistance 250 °C
weight approx. 85 kg
preparation for cylinder liners and bearings

Reference numbers

List of reviews:

Damian

2025-09-07

Blok silnika został dostarczony w odpowiednim stanie. Pasuje do mojego silnika, jednak nie miałem jeszcze okazji go przetestować w pełni.
Bartosz

2025-09-06

Bardzo solidny blok silnika, który świetnie sprawdził się w mojej maszynie. Regeneracja na wysokim poziomie, wszystko działa bez zarzutu. Polecam!
Benjamin

2025-08-24

I recently purchased a rebuilt engine block for my machine, and I couldn't be happier with the quality. It fits perfectly and has significantly improved performance. Highly recommend for anyone looking to upgrade their equipment!
Jakub

2025-08-06

Produkt spełnia swoje funkcje, jednak warto zwrócić uwagę na szczegóły montażowe. Dobrze wykonany, ale wymaga precyzyjnego dopasowania.
Grzegorz

2025-04-23

Produkt spełnia swoje podstawowe funkcje. Montaż przebiegł bez problemów, a silnik działa zgodnie z oczekiwaniami.

Write a review.

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Google

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

Kamil Przybysz

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Opinion 5/5

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

William L Park

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Opinion 5/5

Jestem bardzo zadowolony z naszej współpracy. Dobry zespół, dobra obsługa, dobra cena, dobre części. Dziękuję!

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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