Product Overview

This professional-grade DLLA134P422 fuel injector nozzle (OE No. 0 433 171 303) is a direct replacement for diesel engine fuel injection systems. Manufactured to strict OEM specifications, this nozzle is designed for global B2B distribution, serving major markets across North America, Europe, Asia-Pacific, the Middle East, and South America. We offer fast, reliable shipping to key industrial hubs and ports worldwide, ensuring your supply chain remains uninterrupted.

Key Features & Benefits

• Precision Engineering: Manufactured from high-speed steel for exceptional durability and resistance to wear, ensuring long service life in demanding diesel engine applications.
• 100% Professional Tested: Each nozzle undergoes rigorous testing to guarantee optimal spray pattern, fuel atomization, and injection pressure, meeting or exceeding OE performance standards.
• Direct Fit Replacement: Designed for easy installation with no modifications required, providing a seamless replacement for worn or failed injector nozzles.
• Enhanced Fuel Efficiency: The precision-machined spray holes ensure complete fuel combustion, reducing fuel consumption and lowering emissions.
• Reliable Performance: Built to withstand high temperatures and pressures within the combustion chamber, delivering consistent performance under all operating conditions.

Technical Specifications

OEM Cross-Reference

This nozzle is a direct replacement for the following OEM and cross-reference numbers:

• Bosch: 0 433 171 303, DLLA134P422
• OEM: 0433171303

Note: Always verify fitment with your specific engine model before purchase.

Compatibility

This injector nozzle is designed for use in a wide range of diesel engines, including:

• Engine Types: 4-cylinder and 6-cylinder diesel engines
• Vehicle Applications: Trucks, buses, agricultural tractors, construction machinery, and industrial diesel engines
• Brands: Compatible with Bosch fuel injection systems used by major diesel engine manufacturers (e.g., Cummins, Detroit Diesel, Volvo, MAN, and others).

For specific vehicle model fitment, please consult your engine’s service manual or contact our technical support team.

Global Supply & Distribution

• Worldwide Shipping: We ship to all major ports and industrial centers globally, including Los Angeles, Rotterdam, Shanghai, Dubai, and Singapore.
• Major Markets Served: North America, Europe, Southeast Asia, the Middle East, Africa, and Latin America.
• Fast Delivery: Standard and express shipping options available. We maintain stock levels to ensure rapid order fulfillment.
• Export Expertise: Experienced in international trade, we handle all customs documentation and compliance requirements for smooth cross-border transactions.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities, adhering to strict quality control measures throughout the production process.
• Testing: Each nozzle is 100% professionally tested for spray pattern, opening pressure, and leakage before shipment.
• Warranty: Backed by a 4-month warranty against manufacturing defects.
• Material Integrity: Made from high-speed steel to ensure resistance to thermal fatigue and mechanical wear.

FAQ

Q1: Is this nozzle a direct replacement for my Bosch DLLA134P422 injector?
Yes, this nozzle is a direct, drop-in replacement for the original Bosch DLLA134P422 (0 433 171 303) injector nozzle. It is manufactured to the same dimensional and performance specifications, ensuring a perfect fit and reliable operation.

Q2: What is the recommended installation procedure?
Installation should be performed by a qualified diesel technician. Ensure the injector body and mounting surface are clean. Use a new copper gasket (not included) and torque the injector to the manufacturer’s specifications. After installation, bleed the fuel system to remove any air before starting the engine.

Q3: How can I verify the quality of this nozzle before placing a bulk order?
We strongly recommend ordering a sample (single unit) for testing and fitment verification. Our MOQ is 48 pcs for bulk orders, but samples are available upon request. We also provide detailed test reports and can arrange third-party inspection upon request.

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 .