GAOLAOSY 2" (52mm) Fuel Sender Unit and LED-Backlit Gauge — 12V, 240–33Ω, Leak-Resistant

Designed as a direct replacement for many factory sensors, this assembly pairs an iron-bodied sending unit with a plastic, LED-backlit gauge to deliver clear readings and reliable electrical output. Built for 12V systems and compatible with 240–33 ohm gauges, the kit includes all mounting hardware and terminals for a straightforward swap. The materials and sealing choices focus on resisting rust and preventing leaks so you get long-term service in road, off-road and marine environments.

How does the GAOLAOSY sender unit prevent leaks and corrosion?

The sender uses an integrally formed iron shell and a precision gasket to create a tight, vibration-resistant seal at the tank flange. The gauge housing is molded from high-grade plastic with a waterproof, antifog glass face to keep moisture and fumes out of the instrument cluster.

• Integrally formed iron shell for strength and corrosion resistance
• Leak-proof rubber gasket included for SAE 5-hole mount
• Waterproof, antifog glass on the gauge to protect internals

What readings and electrical specs should I expect from this fuel gauge?

The dial is LED white backlit with a smooth-moving pointer that marks Empty, Half and Full positions for intuitive monitoring. It works with standard 12V systems and is matched to sensors with a 240–33 ohm resistance range so it integrates with many legacy and aftermarket installations.

• LED white backlight for visibility day or night
• Smooth pointer showing E — 1/2 — F range
• Compatible with 12V systems and 240–33 ohm sender resistance

How simple is installation and what comes in the box?

The unit follows a standardized SAE 5-hole mounting pattern so you can install it using common hand tools. The kit includes the sending unit, gauge, gasket, mounting screws and quick-connect wire terminals so you don’t need extra parts to complete most replacements.

• SAE 5-hole installation pattern for easy fitment
• Included gasket and mounting hardware for a secure seal
• Quick wire terminals for fast electrical hookup

Which vehicle types and tank setups is this compatible with?

The sending unit is sized at approximately 2.17 inches (52mm) and is intended for widespread compatibility across cars, SUVs, light trucks and boats. Its resistance range and 12V design make it suitable as a replacement for many OEM internal sensor failures, but always verify tank depth and flange pattern before ordering.

• 2.17" (52mm) gauge diameter fits many standard dash openings
• Useful for cars, SUVs, trucks and marine tanks with matching flange
• Intended as an OEM-style replacement for internal sensor failures

Who is this for? Installers, do-it-yourself owners and fleet technicians seeking an affordable, ready-to-fit fuel level replacement will find this GAOLAOSY kit practical. It suits anyone replacing a failed internal sender or upgrading to a clear LED-backlit gauge on vehicles or small boats where a compact 52mm instrument and sealed sender are required.