Favorites (0) Store
Call us +48 33 870 42 00

Fuel pressure valve Cummins QSC8.3/QSL9 3963808

Original Cummins fuel pressure valve 3963808 for QSC8.3/QSL9 engines. Stabilizes fuel pressure, protects injectors, and optimizes engine operation.

  • Condition: new
  • SKU: 15784
Ocena 4,9

104.31 EURNet

- +

Product description

Fuel Pressure Valve Cummins QSC8.3/QSL9 3963808

Description

The Cummins fuel pressure valve with part number 3963808 is a precision component of the common rail injection system, responsible for regulating fuel pressure. It ensures stable engine operation, optimizes combustion, and protects injectors from excessive pressure damage. Made from high-strength steel, it guarantees long service life and reliability under demanding conditions. Designed for QSC8.3 and QSL9 engines, it is widely used in construction, agricultural, and heavy-duty vehicles.

Technical Data

  • Part number: 3963808
  • Engine type: Cummins QSC8.3 / QSL9
  • Function: fuel pressure regulation in common rail system
  • Material: high-strength steel
  • Service life: long-lasting operation

Application

The valve is used in a wide range of machines and vehicles equipped with Cummins QSC8.3 and QSL9 engines, including:
  • construction machinery (excavators, loaders, graders),
  • agricultural tractors and special equipment,
  • heavy-duty trucks and buses,
  • power generators and industrial equipment.

Properties

  • Stabilizes fuel pressure in the common rail system.
  • Protects injectors and high-pressure pump from damage.
  • Improves engine performance and reduces emissions.
  • Resistant to high temperatures and pressures.
  • Easy installation and full compatibility with original Cummins units.

Specification

Specification Value
name Fuel pressure valve
mark Cummins
type QSC8.3/QSL9
part number 3963808
condition new
material high-strength steel
compatible engines Cummins QSC8.3 / QSL9

Reference numbers

List of reviews:

George

2025-10-03

The part fits well and functions as intended. No issues encountered during installation or operation.
Paweł

2025-10-03

Produkt spełnia swoje zadanie. Nie zauważyłem żadnych problemów podczas użytkowania.
Bartosz

2025-10-03

Zawór działa zgodnie z oczekiwaniami. Montaż był prosty, a wydajność na poziomie standardowym.
Artur

2025-07-16

Zamówiłem ten zawór do swojej maszyny i jestem bardzo zadowolony. Działa bez zarzutu, a montaż był prosty. Polecam!
Mariusz

2025-06-12

Świetny produkt! Zawór działa jak należy, a jakość wykonania jest naprawdę dobra. Na pewno wrócę po więcej części.
Katarzyna

2025-05-19

Bardzo szybka dostawa i produkt zgodny z opisem. Zawór działa bez problemów, co znacznie poprawiło wydajność mojej maszyny.
John

2025-04-30

I purchased this fuel pressure valve and it works perfectly. Installation was straightforward and the quality is impressive. Highly recommend!

Write a review.

See also

Discover our wide range of products

new Injector CR Bosch 0445120177
fuel system

Injector CR Bosch 0445120177

285.59 EURNet

- +
new Injector CR Bosch 0445120196
fuel system

Injector CR Bosch 0445120196

360.23 EURNet

- +
new Fuel Feed Pump Bosch 0440008079
fuel system

Fuel Feed Pump Bosch 0440008079

125.64 EURNet

- +
new Injector CR Bosch 0445120236
fuel system

Injector CR Bosch 0445120236

200.75 EURNet

- +
new Elektrozawór ciśnienia paliwa Bosch 1465ZS0081
fuel system

Elektrozawór ciśnienia paliwa Bosch 1465ZS0081

51.93 EURNet

- +
new Injector CR Bosch 0986435549
fuel system

Injector CR Bosch 0986435549

242.24 EURNet

- +
new Fuel pump CR Bosch 0445020081
fuel system

Fuel pump CR Bosch 0445020081

856.07 EURNet

- +
new Injector Bosch 0445120305
fuel system

Injector Bosch 0445120305

263.33 EURNet

- +
new Injector CR Bosch 0445124043
fuel system

Injector CR Bosch 0445124043

318.97 EURNet

- +
new Injector + adapter wtryskiwacza Liebherr 10141135
fuel system

Injector + adapter wtryskiwacza Liebherr 10141135

1 708.20 EURNet

- +
new Fuel pump CR Bosch CR/CP3HS3/L110/30-789S 0445020109
fuel system

Fuel pump CR Bosch CR/CP3HS3/L110/30-789S 0445020109

581.38 EURNet

- +
Bosch Rexroth parts catalog

Bosch Rexroth parts catalog

More

Check out our offer of hydraulic systems for the popular brand Bosch Rexroth.

Construction Machinery Service

Construction Machinery Service

More

We offer comprehensive support for both stationary and mobile repair of construction machinery.

Hydraulic Pumps and Motors Repairs

Hydraulic Pumps and Motors Repairs

More

Repair and regeneration of hydraulic components: hydraulic motors and pumps.

Combustion Engine Repairs

Combustion Engine Repairs

More

Comprehensive repairs of internal combustion engines: verification, parts replacement, repair, and performance testing.

Construction Machinery Purchase

Construction Machinery Purchase

More

Purchase of excavators, loaders, bulldozers, and dumpers in complete, incomplete, or damaged condition.

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.

Mateusz Lenart

Google

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

Google

Opinion 5/5

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

William L Park

Google

Opinion 5/5

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

Tiberiu Demeter

Google

Opinion 5/5

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

Jinajon

Technical materials

Here you will find texts about construction machinery - technical advice, as well as news and events from the industry.

Reconstruction of the Cummins QSB 4.5 Engine in the Hyundai R180LC-9 Excavator
2026-07-07

Reconstruction of the Cummins QSB 4.5 Engine in the Hyundai R180LC-9 Excavator

See more
Renovation of the Volvo D7D Engine in the L120E Loader
2026-07-07

Renovation of the Volvo D7D Engine in the L120E Loader

See more
Renovation of the Liebherr D934 A7 Engine in the Liebherr LR 636 Litronic Loader
2026-07-06

Renovation of the Liebherr D934 A7 Engine in the Liebherr LR 636 Litronic Loader

See more
Renovation of the Liebherr D934 A7 Engine in the Liebherr LR 636 Litronic Loader
2026-07-03

Renovation of the Liebherr D934 A7 Engine in the Liebherr LR 636 Litronic Loader

See more
Engine Overhaul of Liebherr D9508 A7 in LTM 1300-6.2 Crane
2026-07-03

Engine Overhaul of Liebherr D9508 A7 in LTM 1300-6.2 Crane

See more
Performance and Application of the Volvo L180F Loader
2026-06-30

Performance and Application of the Volvo L180F Loader

See more
Directions
load
Cookie preferences
We use cookies to provide essential website functionality and improve your online experience. You can choose for each category whether you want to accept or reject it at any time.
Essential cookies
Preference cookies
Analytical cookies
Marketing cookies
Uncategorized cookies

Detailed information on how we handle cookies can be found in our Privacy Policy

Consent granted on:
Consent ID: