RUPSE Fuel Sender Unit 6in (150mm) Stainless Steel with 8-Color Backlit Gauge and IP67 Waterproof

The RUPSE 6" (150mm) stainless steel fuel sender unit is a corrosion-resistant fuel and water level sensor paired with an 8-color backlit gauge for accurate tank readings on boats, cars, trucks and RVs.

This RUPSE sender-and-gauge kit combines a stainless-steel float arm and reed-switch interior with an IP67-rated, anti-fog display so you can monitor tank levels reliably in marine and mobile environments. Built for gasoline, diesel, methanol and water applications, the unit brings durable materials, a clear analog-style gauge and a universal 5-hole SAE mount that simplifies retrofit and replacement jobs.

How does this sender measure fuel and water levels accurately?

The sender uses a magnet-equipped float on a stainless-steel arm that moves along a reed-switch strip inside the housing. As the float travels, it changes the reed-switch state to produce a stable electrical signal that corresponds to Empty, 1/2 and Full on the gauge.

• High-precision reed switches provide repeatable, low-noise output.
• Stainless-steel exterior resists corrosion and prevents sticking.
• Designed to work with gasoline, diesel, methanol and water.

What makes the gauge easy to read in different conditions?

The companion gauge features an anti-fog curved glass face and a stainless-steel bezel for durability. It offers eight selectable backlight colors and IP67 waterproofing so you can customize visibility for daylight, night or rough weather conditions.

• 8 adjustable backlight colors to reduce glare and match dash lighting.
• Anti-fog curved glass keeps the dial clear in humid or cold environments.
• IP67 rating protects the gauge from splashes and brief immersion.

Is installation straightforward for boat and vehicle tanks?

Yes—the unit uses the common SAE 5-hole mounting pattern and includes an NBR gasket plus M5 screws for a reliable seal. The kit also supplies 10 quick wiring terminals and a wiring diagram, making it a practical option for DIY installs and professional fits alike.

• SAE 5-hole mounting for direct replacement of many factory senders.
• NBR gasket offers high oil resistance and improved sealing.
• Wiring terminals and diagram speed up electrical hookup.

Which tank sizes and vehicles is this sender compatible with?

The 6" (150mm) arm length suits small-to-medium tanks commonly found in personal boats, smaller cars, trucks, RVs and some agricultural machines. RUPSE offers multiple lengths to match different tank depths, so you can select the proper size for your application.

• 6" arm fits compact to mid-depth tanks used in boats and RVs.
• Multiple size options available for larger or shallower tanks.
• Works across marine, automotive, agricultural and industrial equipment.

Who is this for: The RUPSE 6" stainless-steel sender and gauge set is designed for owners and installers who need a robust, accurate replacement or upgrade for fuel and water tanks. It's especially suited to small boats, personal watercraft, RVs, work trucks and agricultural equipment where corrosion resistance and clear dashboard readout are priorities. If you need a reliable sensor that tolerates harsh environments, offers simple mounting and visible, customizable gauge illumination, this kit is a practical choice. Avoid making medical or guaranteed performance claims; consult vehicle or tank specifications to confirm compatibility before purchase.