Standard Ignition LSF126 Fuel Level Sensor

Fuel Level Sensor for Infiniti FX and QX70

Standard Ignition LSF126 is a direct replacement fuel level sensor built for accurate fuel tank level readings. It is engineered with a plastic body, finger-style sender contact design, and a float included for service on select Infiniti FX and QX70 applications.

• Direct replacement fuel level sensor
• Fits select 2010-2015 Infiniti FX35, FX37, FX50, and QX70 applications
• Plastic construction with finger-style sender contact design
• Float included for proper fuel level sensing
• 3 male terminals with wire lead connection
• 4-wire design; no wiring harness included
• No adjustable setting for consistent OE-style fitment

Fitment and Cross Reference

Compatible with 2010-2012 Infiniti FX35, 2010-2013 Infiniti FX50, 2013 Infiniti FX37, and 2014-2015 Infiniti QX70 applications. This part cross-references 5S17133 and LSS126 for the same application. Standard Ignition LSF126 is also referenced by interchange numbers including 250601CB1C, 77653321, FLSB10047, and FLV501.

What It Helps Resolve

• Inaccurate fuel gauge readings
• Fuel level readings that fluctuate or drop out
• Warning lights related to fuel level sender performance
• Difficulty tracking remaining fuel in the tank
• Replacement needs after sender wear or float issues

Installation Notes

Verify connector style, terminal count, and tank application before installation. This sensor uses a wire-lead connection with 3 male terminals and does not include a wiring harness or gasket. Confirm the vehicle’s fuel tank configuration matches the listed Infiniti FX and QX70 fitment before service.

Quality Assurance

Standard Ignition supplies direct replacement electrical and fuel system components built to match OE-style fitment and function for service applications.