Product Details
Product Overview
This high-quality Diesel Injector Nozzle (Part Number: 0 433 171 221 / DLLA155P306) is a precision-engineered component designed for optimal fuel atomization in diesel engines. As a direct replacement for OE number 0433171221, this nozzle ensures reliable performance and improved combustion efficiency. We ship globally to major markets including North America, Europe, Asia-Pacific, the Middle East, and South America, offering fast delivery to industrial centers and ports worldwide.
Key Features & Benefits
- Precision Engineering: Manufactured to exact OEM specifications for seamless fitment and reliable operation.
- Enhanced Fuel Efficiency: Optimized spray pattern ensures complete fuel combustion, reducing consumption and emissions.
- Durable Construction: Made from high-speed steel for superior wear resistance and long service life under high-pressure conditions.
- Improved Engine Performance: Restores lost power, reduces smoke, and ensures smooth idling and acceleration.
- Cost-Effective Solution: Direct replacement for worn or damaged injector nozzles, avoiding expensive injector assembly replacement.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0 433 171 221 / 0433171221 |
| Nozzle Model | DLLA155P306 |
| Fuel Type | Diesel |
| Material | High-Speed Steel |
| Weight | 0.065 kg (Single Item) |
| Application | Diesel Fuel Injection System |
| Condition | New |
| Quality | High-Quality, OEM Standard |
| Package Size | 8 x 1.5 x 1.3 cm |
| MOQ | 48 pcs |
OEM Cross-Reference
This diesel injector nozzle is a direct cross-reference for the following OEM and alternative part numbers:
- 0433171221 (OE Number)
- 0 433 171 221 (Bosch Number)
- DLLA155P306 (Nozzle Model)
- DLLA155P306 (Alternative Bosch Coding)
Compatibility
This nozzle is designed for use in a wide range of diesel engines, including but not limited to:
- Engine Types: Common Rail and Unit Injector diesel engines requiring DLLA155P306 nozzle specifications.
- Vehicle Applications: Suitable for diesel engine cars, light trucks, and industrial equipment.
- Note: Always verify compatibility with your specific engine model and injector body before purchase.
Global Supply & Distribution
We are a trusted supplier of diesel engine components with a robust global logistics network. Our services include:
- Worldwide Shipping: Reliable delivery to North America, Europe, Asia-Pacific, the Middle East, South America, and Africa.
- Fast Transit: Expedited shipping to major ports and industrial zones (e.g., Rotterdam, Dubai, Singapore, Los Angeles).
- Trade Compliance: Experienced in international export documentation and customs clearance.
- Bulk Orders: Competitive pricing for wholesale and B2B bulk purchases.
Quality Assurance
Our diesel injector nozzles are manufactured under strict quality control standards to ensure reliability and performance:
- Manufacturing Standards: Produced in ISO-certified facilities adhering to OE specifications.
- Testing: Each batch undergoes flow rate, spray pattern, and pressure testing.
- Warranty: 4-month warranty against manufacturing defects.
- Packaging: Neutral or WX brand packaging ensures safe transit and product integrity.
FAQ
1. Is this nozzle compatible with my engine model?
This nozzle (DLLA155P306 / 0433171221) is designed for diesel engines that use this specific Bosch nozzle type. We recommend checking your current injector nozzle part number or consulting your engine’s service manual to confirm fitment before ordering.
2. How do I install this injector nozzle?
Installation should be performed by a qualified diesel mechanic. Ensure the injector body and sealing surfaces are clean. Use new copper washers and tighten to the manufacturer’s specified torque. After installation, bleed the fuel system to remove air and test for leaks.
3. What is the typical lifespan of this nozzle?
With proper maintenance and clean fuel, this high-speed steel nozzle can last 80,000 to 120,000 kilometers (or equivalent operating hours). Regular fuel filter changes and using high-quality diesel fuel will maximize its service life.
Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
Exhibition

Packing&Shipping

1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ
Q1. What is your company major products?
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
Q2.What is the MOQ?
A: Normally we can supply any quantity if we have in stock.
Q3. What is your payment term ?
A: We accept Western Union, T/T, Paypal.
Q4. What is the packing ?
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
Q5. When can you deliver products after payment ?
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
Q6. What can you do to complete order perfectly ?
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .
FAQ
Common Product Inquiry Questions
How can I confirm this part matches my engine or injector model?
Send the OEM number, engine model, application, or clear product photos. We will help verify the suitable part before quotation.
Can I ask for packing, shipping, and delivery details together?
Yes. You can combine product confirmation, quantity, destination, packing request, and shipment method in one inquiry so the quotation is more complete.
Why is price not displayed on the page?
This catalog is built for B2B inquiry. Final pricing depends on the confirmed part number, quantity, stock situation, and shipping destination.
What information helps you quote faster?
Please include the OEM number, engine model, quantity, destination country, and any packing or shipping preference. This usually speeds up matching and quotation.
Inquiry Desk
Send Product Inquiry
Use this form to ask for fitment, MOQ, delivery time, packing, and shipping support for this product.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.
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Quick Inquiry
Bosch Diesel Injector Nozzle DLLA155P306 0433171221 for Fuel Injection System
Send one clear inquiry and we will reply with quotation, lead time, and fitment confirmation.
- OEM number is included automatically when available.
- Add quantity, destination, and packing needs for a faster quote.
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Inquiry Desk
Send Inquiry
Quick contact for this product. OEM number is attached automatically.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.