NOZZLE VCA KIT 7135-837

NOZZLE VCA KIT – FULL SPECIFICATION

I. Key Identification & Compatible Components

Part Type: Nozzle VCA (Valve Control Assembly) Kit for Common Rail Diesel Injectors
Compatible Injector References: 28521738, 28577054
Vehicle / Engine Compatibility: VW 1.6 TDI diesel engines, model year 2017 onwards (inline-4)
Manufacturer: OEM / aftermarket suppliers for VW injectors
Injector Technology: Solenoid-type Common Rail Injector with VCA system
Typical OEM Applications: VW Polo, Golf, Passat, T-Roc, and other 1.6 TDI vehicles

II. Vehicle / Engine Application & Technical Data

Primary Application: VW 1.6 TDI diesel engines using CR injectors with VCA (Valve Control Assembly)
Injector Type: Solenoid Common Rail injectors with integrated VCA mechanism
Valve Function: Regulates precise fuel injection timing and quantity via nozzle control
Material: High-strength, heat-treated steel and precision-machined components
Operating Pressure: Typically up to 1600–1800 bar (depending on CR system)
Fuel Compatibility: EN 590 Diesel / B7 Biodiesel blends
Performance Features: Accurate fuel metering, optimized atomization, improved combustion efficiency, reduced emissions

III. Critical Technician Notes (MUST-DO)

1. Installation: Handle carefully; contamination or impact can damage the nozzle or injector
2. Calibration: Must be calibrated or coded using OEM diagnostic tools after installation
3. Sealing Components: Replace all O-rings and washers during installation
4. Clean Installation: Maintain absolute cleanliness; micro-contamination may cause injector failure
5. System Verification: Conduct leak-back test, rail pressure verification, and injector performance check
6. Storage & Handling: Keep in original packaging; avoid dust, moisture, and mechanical impact
7. Compatibility Notes: Only compatible with listed injector part numbers; do not interchange
8. Aftermarket / Remanufacture Notes: Use verified OEM or high-quality aftermarket kits to ensure reliability