9521A080H / 9521A081H diesel fuel injection pump (4493641 / 449-3641)

The 9521A080H / 9521A081H Diesel Fuel Injection Pump (4493641 / 449-3641) is a high-precision OEM replacement part designed for diesel engines used in construction, agricultural, and industrial machinery.
It provides accurate fuel metering, stable delivery pressure, and efficient combustion, ensuring the engine runs smoothly and economically under demanding conditions.

⚙️ High-Precision Fuel Delivery

Built with advanced injection technology, this pump delivers diesel fuel with micron-level precision, optimizing combustion efficiency and reducing fuel waste.
The consistent pressure output ensures smooth acceleration, low emissions, and reliable startup in both cold and hot environments.

🔩 Durable OEM Construction

Manufactured from high-grade alloy steel and coated for corrosion resistance, the 9521A080H / 9521A081H fuel pump offers exceptional durability and long service life.
Its precision-engineered internal components minimize wear and ensure leak-free performance even under high pressure.

🧰 Perfect Replacement and Compatibility

This model replaces part numbers 4493641 and 449-3641, ensuring 100% compatibility with multiple diesel engine platforms.
The pump fits directly into the existing fuel system without modification, making it ideal for engine repair, rebuilds, or OEM maintenance.

🌍 Applications

• Diesel engines in excavators, bulldozers, and loaders

• Agricultural tractors and power units

• Industrial generators and construction machinery

• Replacement for OEM 4493641 / 449-3641 fuel systems

✅ Key Features & Advantages

• OEM replacement fuel injection pump 9521A080H / 9521A081H

• Consistent pressure and efficient fuel atomization

• Corrosion-resistant and long-lasting materials

• Suitable for a wide range of diesel engines

• Enhances fuel economy and engine response