DLLA153P1721 0433171721 Diesel Mechanical Injection Nozzle For Xichai 4DW9 4DX21

DLLA153P1721 0433171721 Common Rail Injector Nozzle For Xichai 4DW9 4DX21 Engine

DLLA153P1721 (0433171721) is a professional Bo-sch P-type common rail nozzle customized for Xichai 4DW9 and 4DX21 light-duty diesel engines. Adopting precision micro-hole grinding technology and high-pressure resistant alloy material, it features excellent wear resistance and thermal stability under long-term light-load operation. It perfectly matches Bo-sch 0445120199 and 0445120239 injectors and supports Bo-sch CP3 common rail pumps. Each nozzle passes 100% flow test and high-pressure sealing test, ensuring consistent injection volume and uniform atomization. It effectively improves combustion efficiency, reduces fuel waste and exhaust emissions, solves common faults such as insufficient power and idle instability, and is an ideal replacement part for light truck engine maintenance and aftermarket repair.

Frequently Asked Questions

1. Which engine does this nozzle fit?  

Special for Xichai 4DW9 and 4DX21 light-duty diesel engines for Foton light trucks.

2. Matching injector assembly number?  

Compatible with Bo-sch common rail injectors 0445120199 and 0445120239.

3. What fuel pump does it match?  

Matches Bo-sch CP3 series high-pressure common rail fuel pump for light truck engine systems.

4. Does it have independent plunger?  

No separate plunger available, the plunger is integrated inside the CP3 pump assembly.

Certification & Exhibition

Shipping Information

Delivery Time: 3-5 working days for samples; 5-14 working days for bulk orders

Door-to-Door FedEx service for samples

Air or Sea freight for bulk orders

Flexible shipping methods and freight forwarder options available