Optimize your diesel engine’s fuel delivery with our premium DN4PD57 fuel injector nozzle. Designed as a direct replacement for OEM parts 093400-5571 and 23620-54080, this high-precision component is engineered to restore peak performance in Toyota 2L, 3L, and 5L engine families. As a trusted supplier from Shandong, China, we serve a global network of workshops, parts distributors, and fleet managers across North America, Europe, Asia-Pacific, and the Middle East.

Key Features & Benefits

• Precision Fuel Atomization: Manufactured from high-speed steel for exceptional spray pattern accuracy, ensuring optimal combustion efficiency and reduced fuel consumption.
• Direct OEM Replacement: Matches exact specifications of 093400-5571 and 23620-54080, guaranteeing a seamless fit without modifications.
• Durable Construction: Built to withstand extreme injection pressures and high operating temperatures, extending service life beyond standard aftermarket parts.
• Enhanced Engine Performance: Restores lost power, smooths idle, and reduces black smoke emissions caused by worn or clogged injectors.
• Rigorous Quality Control: Each nozzle undergoes pressure and spray pattern testing to ensure consistent performance across all cylinders.

Technical Specifications

OEM Cross-Reference

This injector nozzle is a direct replacement for the following OEM and aftermarket part numbers:

• Primary OEM: 093400-5571 (DENSO)
• Alternate OEM: 23620-54080 (Toyota)
• Common Reference: DN4PD57

Note: Always verify your existing part number against the list above to ensure compatibility before purchase.

Compatibility

This injector nozzle is specifically designed for Toyota diesel engines, including:

• Engine Models: 2L, 3L, 5L (including naturally aspirated and turbocharged variants)
• Typical Applications: Toyota Hilux, Land Cruiser Prado, Dyna, Hiace, and other commercial vehicles equipped with these engine series.
• Year Range: Fits engines produced from the late 1980s through the early 2000s (consult your vehicle manual for exact fitment).

Global Supply & Distribution

We operate a streamlined export supply chain designed to meet the urgent demands of the global B2B aftermarket:

• Worldwide Shipping: Reliable logistics partners ensure fast delivery via sea freight (FOB Qingdao/Shanghai) and air express (DHL, FedEx, UPS) for urgent orders.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, Poland), Asia-Pacific (Japan, South Korea, Australia, Thailand), Middle East (UAE, Saudi Arabia), Africa, and South America.
• Fast Delivery: MOQ of 48 pcs allows for efficient stock rotation. Bulk orders shipped within 3-7 working days to major ports and industrial hubs.
• Export Experience: Proven track record in international trade compliance, including proper customs documentation and packaging for long-distance transit.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities in Shandong, China, with strict adherence to dimensional tolerances.
• Testing Procedures: Each nozzle is individually tested for spray pattern, opening pressure, and leakage to ensure it meets OEM performance benchmarks.
• Warranty: Backed by a 4-month warranty against manufacturing defects. Our 24-hour customer service team is ready to assist with any technical or logistical inquiries.

FAQ

Q1: How can I confirm this nozzle fits my 3L engine?
A: Check the existing part number on your old injector. If it matches 093400-5571, 23620-54080, or is stamped DN4PD57, this nozzle is a direct fit. For Toyota 3L engines, it is a standard replacement part. If you are unsure, please contact our support team with your engine serial number for verification.

Q2: What is the recommended installation procedure?
A: We recommend professional installation by a qualified diesel mechanic. Clean the injector bore thoroughly before installation. Apply the correct tightening torque (refer to your engine service manual). Always replace the copper sealing washer and ensure the nozzle is not contaminated with dirt during handling.

Q3: How often should these nozzles be replaced for preventive maintenance?
A: For commercial applications, inspect nozzles every 50,000-80,000 km (30,000-50,000 miles) or during major engine overhauls. Symptoms of wear include rough idling, increased fuel consumption, hard starting, or excessive exhaust smoke. Replacing nozzles in sets (all cylinders) is recommended to ensure balanced engine performance.