Weichai National V Fuel Injector Assembly 0445120391 612630090055
Weichai National V Fuel Injector Assembly 0445120391 612630090055
Weichai National V Fuel Injector Assembly — OEM 0445120391 / 612630090055
Keep your Weichai National V engine running at peak performance with this precision-engineered fuel injector assembly. Designed as a direct drop-in replacement, this injector is built from durable stainless steel and factory-tested to ensure plug-and-play installation with no modifications required. Whether you're maintaining a commercial truck or heavy-duty diesel vehicle, this high-quality injector delivers consistent, reliable fuel atomization for optimal engine efficiency.
Made in Mainland China.
Key Features
- OEM Reference Numbers: 0445120391 / 612630090055 — confirm your part number before ordering
- 100% Factory Tested: Every unit passes rigorous quality control checks before shipment
- Direct Replacement: Plug-and-play fitment — no modifications or machining needed
- Stainless Steel Construction: Built for long-lasting durability in demanding diesel engine environments
- Compatible Vehicle: Weichai National V (China V) diesel engines
- Packaging: Ships in independent neutral carton packaging to protect the injector in transit
- Condition: Brand new or high-quality remanufactured precision component
Specifications
| OEM Part Number | 0445120391 / 612630090055 |
| Compatible Application | Weichai National V Diesel Engine |
| Material | Stainless Steel |
| Installation Method | Direct Replacement (Plug & Play) |
| Packaging | Independent Neutral Carton |
| Origin | Mainland China |
Important Purchasing & Installation Notes
- Verify your OEM number (0445120391 / 612630090055) against the part you intend to replace before completing your purchase. Compatibility is the buyer's responsibility.
- Carefully compare product photos to your existing injector to confirm it is the correct part.
- During installation, take care not to damage the sealing ring — improper installation can result in leaks.
- Returns are accepted only for items in original, resalable condition in original packaging. Items damaged due to incorrect installation or ordering the wrong model are not eligible for return.
Service Guarantee
We are committed to 100% customer satisfaction. If you have any questions before or after your purchase, please contact us and our team will be happy to assist. We also carry a wide range of additional diesel engine and heavy-duty vehicle parts — reach out if you need a component you don't see listed.
For more information on diesel engine maintenance standards and fuel system best practices, visit the OSHA Diesel Engine Resources page.
Frequently Asked Questions
Q: How do I confirm this Weichai fuel injector assembly (0445120391) fits my engine?
A: Cross-reference the OEM part numbers 0445120391 and 612630090055 with your existing injector or your vehicle's service manual. Both numbers are printed on your original injector and in your engine documentation. If you're unsure, contact us with your engine model and serial number before ordering.
Q: Is this injector brand new or remanufactured?
A: This product is either brand new or a high-quality remanufactured unit (as pictured in the listing). Either way, every unit undergoes 100% factory testing to ensure it meets performance specifications before shipment.
Q: Can I install this Weichai injector myself, or do I need a professional?
A: This injector is designed for direct, plug-and-play replacement with no machining required. However, diesel fuel injector installation requires proper torque settings and care when seating the sealing ring. It is recommended that installation be performed by a qualified diesel mechanic to avoid damage and ensure a proper, leak-free fit.
Q: What is included in the packaging?
A: The package includes the fuel injector assembly only, shipped in a protective neutral carton. No additional accessories, tools, or hardware are included unless otherwise specified.