Hitachi FUP3309 Fuel Pump

Hitachi FUP3309 Fuel Pump for Mercedes-Benz

The Hitachi FUP3309 fuel pump is built to deliver the fuel pressure and volume required by modern Mercedes-Benz engines. Precision-machined internal components help reduce friction inside the pump, supporting efficient operation and long service life.

Compatible With Mercedes-Benz G550, G500, G55 AMG, SLK230, SLK32 AMG, SLK320, CLK430, E320, CLK55 AMG, E430, E55 AMG, SL500, SL600, C230, C43 AMG, CL500, CL55 AMG, CL600, S430, S500, S55 AMG, S600, E420, and SL320 applications across the listed model years.

• Fuel pump for Mercedes-Benz air and fuel delivery service
• Precision-machined internal components for efficient pump operation
• Reduced internal friction for improved durability
• Supports the fuel pressure and volume demanded by gasoline engines
• Hitachi part number FUP3309 for direct catalog lookup

Detailed Product Information

Hitachi FUP3309 is a fuel pump designed for a wide range of Mercedes-Benz passenger cars and SUVs from 1995 through 2012. It serves applications including Mercedes-Benz E320, S500, SL500, and G550, along with performance models such as the E55 AMG, CLK55 AMG, and SLK32 AMG. This part number, FUP3309, is also referenced as a supersession for FUP3309-D in multiple applications.

This part cross-references Bosch 69420 and Airtex E11007 for the same application.

Common Symptoms Addressed

• Hard starting caused by low fuel pressure
• Engine hesitation under load from inconsistent fuel delivery
• Stalling related to weak pump output
• Loss of power during acceleration
• Fuel starvation on Mercedes-Benz E320, S500, or SL500 models

Installation Notes

Verify the vehicle year, model, and VIN break before ordering, since several Mercedes-Benz applications use VIN-specific coverage. Confirm the pump location and electrical connector style against the original unit before installation. FUP3309 should be installed following factory service procedures and system pressure checks.

Quality Assurance

Hitachi fuel pumps are engineered with precision internal components to support efficient operation and reduced friction. That design focus helps the pump meet the fuel delivery demands of Mercedes-Benz applications while supporting durability in daily service.