Product Overview

This high-precision DENSO HP3 Pump Plunger (OEM: 294090-0120 / 294090-0620) is a critical component engineered for the 294050 series fuel injection pumps. Designed for professional replacement and repair, this plunger ensures optimal fuel metering and high-pressure generation for modern diesel engines. Sourced from a leading Chinese manufacturer with extensive export experience, we supply to major markets across North America, Europe, Asia-Pacific, the Middle East, and South America, ensuring fast and reliable delivery to global industrial centers.

Key Features & Benefits

• Premium Material: Manufactured from High-Speed Steel (HSS) for exceptional wear resistance and long service life under extreme pressure.
• 100% Professional Testing: Each plunger undergoes rigorous quality control to guarantee precise dimensions and leak-free performance.
• Direct Fitment: Exact OEM specifications ensure a seamless replacement without modifications, reducing downtime for your fleet or workshop.
• Enhanced Engine Performance: Restores fuel injection pressure and volume, improving combustion efficiency, power output, and fuel economy.
• Reliable Supply: MOQ of just 5 pieces, with customized packaging options and fast 3-7 day dispatch.

Technical Specifications

OEM Cross-Reference

This plunger is a direct replacement for the following DENSO OEM part numbers:

• 294090-0120
• 294090-0620

It is compatible with the following pump body part numbers within the 294050 series:

• 294050-0270
• 294050-0105
• 294050-0110
• 294050-0123
• 294050-0130
• 294050-0153
• 294050-0160
• 294050-0170
• 294050-0190
• 294050-0200
• 294050-0220
• 294050-0250
• 294050-0290
• 294050-0300

Compatibility

This HP3 plunger is specifically designed for use in DENSO HP3 fuel injection pumps commonly found in heavy-duty diesel engines. Typical applications include:

• Agricultural tractors and harvesters
• Construction machinery (excavators, loaders)
• Truck and bus diesel engines
• Industrial generator sets

Note: Please verify your pump’s specific model number (e.g., 294050-0270) against the list above to ensure compatibility.

Global Supply & Distribution

We offer a comprehensive global logistics network to support B2B clients worldwide. Our supply chain is optimized for fast and cost-effective delivery to major ports and industrial hubs in:

• North America: Los Angeles, Houston, New York, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Shanghai, Busan, Sydney
• Middle East & Africa: Dubai, Jeddah, Durban
• South America: Santos, Buenos Aires, Callao

We specialize in export documentation and customs clearance compliance, ensuring a smooth transaction for international buyers.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities using advanced CNC machining and heat treatment processes.
• Testing: Every plunger is 100% professionally tested for dimensional accuracy, surface finish, and pressure integrity.
• Warranty: Backed by a robust 6-month warranty against manufacturing defects.

FAQ

Q1: What is the difference between the 294090-0120 and 294090-0620 part numbers?

These part numbers refer to different specifications within the same HP3 plunger family, often indicating variations in plunger diameter or stroke length. The product listing includes both numbers to cover a wider range of pump models. Please verify the exact number stamped on your original plunger for a perfect match.

Q2: Can this plunger be installed without special tools?

Installation of an HP3 plunger requires precision. While a skilled diesel technician can perform the replacement, we highly recommend using specialized tools for pump disassembly and torquing to prevent damage to the plunger barrel or pump housing. Always lubricate the plunger with clean diesel fuel during installation.

Q3: How can I ensure the longevity of this replacement plunger?

Longevity is significantly influenced by fuel quality. Always use clean, high-quality diesel fuel and replace the fuel filter regularly. Contaminants are the primary cause of plunger wear. Additionally, ensure the pump’s internal clearances are within spec and that the fuel system is free of air before startup.