Technical Specifications: Genuine VOLVO Common Rail Fuel Injector Assembly 20798114Genuine VOLVO Common Rail Fuel Injector Assembly — High‑Precision Electronic Unit Injection Solution
The Genuine VOLVO Premium Heavy‑Duty Common Rail Fuel Injector Assembly (Part Numbers: 20798114 / VOE 20798114 / 3803977), also known as Electronic Unit Injector (EUI), is an ultra‑precision powertrain component for VOLVO D‑series & E‑series diesel engines. Installed in cylinder head combustion chambers, it delivers high‑pressure atomized diesel fuel controlled by E‑ECU solenoid commands. Replacing worn injectors eliminates misfires, black smoke, hard starting and restores peak engine power and fuel efficiency.
Core Technical Advantages
Laser‑Drilled Micro‑Atomization Nozzle: Precision‑honed spray holes produce ultra‑fine fuel mist for complete, efficient combustion.
DLC Diamond‑Like Carbon Coated Internal Needles: Anti‑friction hard coating resists fuel wear, scuffing and high‑pressure friction damage.
High‑Speed Rapid‑Response Solenoid: High‑temperature copper‑wound actuator ensures instant fuel‑delivery response to ECU signals.
Sub‑Micron Precision Sealing Surfaces: Ultra‑tight machining tolerances prevent high‑pressure internal leakage and stabilize rail pressure.
Technical Specifications
| Engineering Parameter | Technical Data / Specification Details |
|---|
| Component Assembly Part Numbers | 20798114 / VOE 20798114 / 3803977 |
| Component Classification | High‑Precision High‑Pressure Electronic Common Rail Fuel Injector Assembly |
| Engine Compatibility | Tier 3 / Tier 4 / Stage V High‑Output Electronic Diesel Engines |
| Internal Protection | Diamond‑Like Carbon (DLC) Anti‑Friction Hard Coating |
| Electrical Interface | Heavy‑Duty Double‑Terminal Plug‑In Connector |
| Sealing Components | Solid Copper Crush Washers + Nitrile Fuel‑Resistant O‑Rings |
Master Application Fleet Guide
This fuel injector fits VOLVO excavators, wheel loaders, graders, pavers and compactors:
Crawler Excavators: EC200D/E, EC210D/E, EC240B, EC250D, EC290B, EC300D
Wheel Loaders & Graders: L105, L120F, G930, G976, G990, PL3005D Pipelayer
Road Construction Equipment: ABG8820B, P7820D, P8820D Pavers, SD115B, SD160B Compactors
Critical B2B Procurement & Maintenance Guidelines
B2B Procurement Strategy
Poor‑quality fuel, water contamination and particle wear cause nozzle erosion, needle sticking and internal leakage, triggering misfires and engine damage. Stock 20798114/3803977 for emergency engine repair orders. Cross‑sell with high‑pressure fuel lines, water separators and fuel filters for complete fuel‑system overhaul kits.
Common Failure Symptoms
Heavy black/white smoke & power loss from worn or stuck‑open injector nozzles causing incomplete combustion
Engine knocking, rough idle & misfire DTC codes due to failed solenoid or incorrect injection timing
Hard hot starting & engine oil dilution from internal fuel leakage into cylinder head or return lines
Best Practice Overhaul Advisory:
Relieve common‑rail residual pressure safely, disconnect main battery switch (17418494). Maintain extreme cleanliness during installation; use new copper crush washer, torque to OEM specs, prime fuel system, bleed air, program IMA/QR calibration code into E‑ECU and check for leaks after startup.
Global Brand Cross‑Reference Matrix
| Brand | Cross‑Reference Part Numbers |
|---|
| VOLVO Genuine PN | 20798114 / VOE 20798114 |
| Factory Interchange | 3803977 |
| Component Group | Common Rail Fuel Injector Assembly / Electronic Unit Injector (EUI) / Diesel Injection Valve Nozzle |
Commercial Inquiry & Global Logistics:Supplier: Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email:
[email protected]Logistics: Global Sea Freight and Fast‑Track Industrial Express Ready
All manufacturer names and model designations are for compatibility reference only. These genuine common‑rail fuel injectors deliver precise high‑pressure injection for global VOLVO construction, quarry, mining and road‑building machinery fleets.
