Autotecnica NI0515790 Fuel Tank Sending Unit - Left

Fuel Tank Sending Unit for Nissan and INFINITI

Autotecnica NI0515790 is a direct-fit fuel tank sending unit built to restore accurate fuel level reporting and factory-style operation. It is engineered for select Nissan 350Z and INFINITI G35, G37, M35, and M45 applications with plug-and-play electrical connection and OE-style fitment.

• Direct-fit OE replacement design for factory fuel sender function
• Fits 2003-2009 Nissan 350Z, left
• Fits 2003-2008 INFINITI G35, left
• Fits 2008 INFINITI G37, left
• Fits 2006-2008 INFINITI M35, left
• Fits 2006-2008 INFINITI M45, left
• 2-terminal blade pin connector with square male plug
• 12V unit with 900-ohm rheostat range
• Negative ground design with 1 port
• Built with alloy conductors to reduce electrical resistance
• Constructed from materials selected for heat and fuel resistance

This Autotecnica fuel tank sending unit, part number NI0515790, is designed to replace a worn or inaccurate sender in the fuel tank and restore dependable gauge readings. It cross-references Delphi FL0421 for the same application. The NI0515790 is a practical OE-style solution for drivers servicing a Nissan 350Z or INFINITI G35, G37, M35, or M45 left-side fuel level sender.

Common Symptoms It Can Address

• Fuel gauge reading empty, full, or fluctuating incorrectly
• Intermittent or inaccurate fuel level signal
• Electrical resistance issues at the sender circuit
• Wear-related sender performance loss from heat and fuel exposure
• Factory sender failure on the left side of the fuel tank

Installation Notes

Verify vehicle year, model, and left-side application before installation. The square male connector is designed for plug-and-play connection to the original wiring, which helps simplify replacement. Confirm terminal style, connector shape, and rheostat range match the original unit before service.

Quality Assurance

Autotecnica designs and tests this fuel tank sending unit for reliability and long service life. NI0515790 is backed by a 24 Month Unlimited Mileage Warranty.