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

106.90 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 nozzle Bosch DLLA150P115 0433171104
fuel system

Injector nozzle Bosch DLLA150P115 0433171104

14.97 EURNet

- +
new Fuel Feed Pump Perkins ULPK0004 296265A1
fuel system

Fuel Feed Pump Perkins ULPK0004 296265A1

Price set Individually

- +
new Injector nozzle Bosch DSLA145P1174 0433175348
fuel system

Injector nozzle Bosch DSLA145P1174 0433175348

24.23 EURNet

- +
new Injector nozzle Bosch DLLA155P274 0433171206
fuel system

Injector nozzle Bosch DLLA155P274 0433171206

24.47 EURNet

- +
new Injector nozzle Bosch DLLA155P135 0433171123
fuel system

Injector nozzle Bosch DLLA155P135 0433171123

27.56 EURNet

- +
new Fuel Feed Pump FDR 500 PRIMA
fuel system

Fuel Feed Pump FDR 500 PRIMA

16.63 EURNet

- +
new Injector nozzle Bosch DLLA151P1169 0433171743
fuel system

Injector nozzle Bosch DLLA151P1169 0433171743

22.09 EURNet

- +
new Injection pump Bosch 0414401107
fuel system

Injection pump Bosch 0414401107

97.16 EURNet

- +
new Injector CR Bosch 0445120066
fuel system

Injector CR Bosch 0445120066

239.70 EURNet

- +
new Overflow valve Bosch 1110010020
fuel system

Overflow valve Bosch 1110010020

76.02 EURNet

- +
new Injector nozzle Bosch DLLA158P1216 0433171766
fuel system

Injector nozzle Bosch DLLA158P1216 0433171766

38.72 EURNet

- +
new Injector nozzle Bosch DLLA142S1189 0433271684
fuel system

Injector nozzle Bosch DLLA142S1189 0433271684

31.36 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.

Renovation of the Deutz TCD2013 L06 2V Engine in the Dynapac SD135C Asphalt Paver
2025-12-08

Renovation of the Deutz TCD2013 L06 2V Engine in the Dynapac SD135C Asphalt Paver

See more
Comprehensive Repair of Cummins QSB6.7 Engine in Terex TC 240LC Excavator
2025-12-05

Comprehensive Repair of Cummins QSB6.7 Engine in Terex TC 240LC Excavator

See more
Rebuilding the Liebherr D926 TI-E A4 Engine in the LR 1400 Crawler Crane
2025-12-02

Rebuilding the Liebherr D926 TI-E A4 Engine in the LR 1400 Crawler Crane

See more
Rebuilding the Cummins QSB4.5 Engine in the JLG G12-55A Loader
2025-11-28

Rebuilding the Cummins QSB4.5 Engine in the JLG G12-55A Loader

See more
Repair of Deutz TCD2013 L06 2V Engine in Dynapac F121C Asphalt Paver
2025-11-27

Repair of Deutz TCD2013 L06 2V Engine in Dynapac F121C Asphalt Paver

See more
Repair of Liebherr D9406 TI-E Engine in LR 1400/1 Crawler Crane
2025-11-26

Repair of Liebherr D9406 TI-E Engine in LR 1400/1 Crawler Crane

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: