Product Overview

This is a premium-quality Diesel Fuel Injector Nozzle, model DN4S1, with OEM reference 0 434 200 001. Designed as a direct replacement for repair and maintenance applications, this nozzle is manufactured to exacting standards to ensure reliable fuel atomization and engine performance. Sourced from a leading manufacturing hub in Shandong, China, this component is part of a global supply chain serving the heavy machinery and diesel engine aftermarket. We ship worldwide to major industrial markets including North America, Europe, Asia-Pacific, the Middle East, and South America, ensuring fast delivery to ports and industrial centers.

Key Features & Benefits

• High-Precision Fuel Atomization: Engineered for optimal spray pattern and droplet size, ensuring complete combustion for maximum power output and fuel efficiency.
• Durable Construction: Manufactured from high-grade alloy steel with heat-treated surfaces, providing exceptional resistance to wear, corrosion, and thermal stress.
• 100% New & Unused: Guaranteed new condition, not remanufactured or refurbished, ensuring full service life and reliability.
• Strict Quality Control: Each nozzle undergoes rigorous testing for flow rate, spray pattern, and sealing pressure to meet or exceed OEM specifications.
• Easy Installation: Direct bolt-on replacement with no modifications required. Includes standard sealing washers for a secure fit.

Technical Specifications

OEM Cross-Reference

This nozzle is an exact replacement for the following OEM and reference numbers. Please verify your current part number before ordering.

• OEM Number: DN4S1
• Cross Reference: 0 434 200 001
• Alternate Reference: 4S1

Note: This list is not exhaustive. Please consult your engine manual or current part to confirm compatibility.

Compatibility

This DN4S1 injector nozzle is designed for use in a variety of diesel engines, primarily used in excavators, heavy construction equipment, and industrial machinery. It is commonly found in engines requiring a standard 4-hole or multi-hole nozzle configuration. While primarily listed for “other” car models, its application is heavily focused on off-highway diesel engines. For specific engine model fitment (e.g., Isuzu, Yanmar, Kubota), please cross-reference your existing nozzle’s code.

Global Supply & Distribution

We provide a robust global logistics network to ensure your parts arrive on time, every time. Our capabilities include:

• Worldwide Shipping: We ship via Air, Sea, and Express courier (DHL, FedEx, UPS, TNT) to over 50 countries.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Japan, Korea, Australia, Singapore), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Fast Delivery: Standard orders ship within 3-7 working days. Express shipping options available for urgent requirements to major industrial ports and airports.
• Export Experience: We specialize in B2B export, handling all customs documentation and international trade compliance requirements.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities in Shandong, China, ensuring consistent quality and dimensional accuracy.
• Warranty: Backed by a 6-month warranty against manufacturing defects in materials and workmanship.
• Testing: Each batch is sample-tested for spray pattern, opening pressure, and leakage. All nozzles are 100% new and pass visual inspection for burrs and surface finish.

FAQ

Q1: What is the difference between the DN4S1 and the 0 434 200 001? Are they interchangeable?
A: The DN4S1 is the OEM part number assigned by the original equipment manufacturer, while 0 434 200 001 is a common cross-reference number (often from Bosch or similar standards). They refer to the exact same physical nozzle. They are fully interchangeable and identical in dimensions, spray angle, and flow rate.

Q2: How do I know if this nozzle fits my engine?
A: You should physically remove your old nozzle and check the number stamped on its side. If it reads DN4S1 or 0 434 200 001, this part is a direct match. This nozzle is typically used in 4-cylinder diesel engines for excavators and industrial generators. If you are unsure, please contact us with your engine model and serial number for verification.

Q3: What is the recommended installation procedure for this nozzle?
A: Installation requires careful attention to cleanliness. 1) Clean the nozzle bore in the cylinder head. 2) Lubricate the new O-ring (if applicable) and the nozzle body with clean engine oil. 3) Install a new copper sealing washer. 4) Tighten the nozzle retaining clamp or nut to the manufacturer’s specified torque (typically 25-35 Nm for this size). 5) Do not over-tighten, as this can distort the nozzle body. We recommend replacing all nozzles in a set for balanced engine performance.