RUPSE Fuel Sender Unit 6-inch (150mm) Stainless Steel with Backlit Gauge and IP67 Reed-Switch Reliability

The RUPSE 6" (150mm) stainless steel fuel sender unit is a corrosion-resistant sending unit and gauge system designed to deliver reliable fuel and water level readings for boats, cars, trucks and RVs.

This compact sender combines a robust stainless-steel housing with reed-switch sensing to give stable, long-lasting level readings in gasoline, diesel, water and many common fuels. The kit includes a matching backlit gauge with adjustable colors, a durable NBR sealing gasket and hardware laid out for straightforward SAE five-hole installation. It’s built for wet environments, resists corrosion, and aims to simplify replacement or upgrade projects on a wide range of tanks and vessels.

How accurate and durable is the RUPSE sender in marine conditions?

The sender uses reed switches inside a stainless-steel shell to reduce wear and deliver consistent signals over time. Corrosion-resistant materials and IP67-rated elements on the gauge help it tolerate splashes and humid cabins, making it suitable for boating environments.

• Stainless-steel exterior resists rust and salt exposure.
• Reed-switch sensing minimizes mechanical wear for longer service life.
• IP67-rated gauge components for water resistance and fog protection.
• Compatible with fuels and water — gasoline, diesel, methanol, etc.

What features make installation simple for DIYers and technicians?

RUPSE designed the unit to match standard SAE five-hole patterns so it fits many replacement applications without special adapters. The package includes an oil-resistant NBR gasket, M5 screws and labeled wiring terminals to speed up mounting and electrical hookup.

• SAE 5-hole mounting pattern for direct replacement fit on common tanks.
• NBR gasket provides reliable sealing against oil and fuel.
• M5 mounting screws and ten quick-connect wiring terminals included.
• Clear wiring diagram reduces guesswork for fast installation.

Can the gauge be read easily day or night, and does it suit different vessel dashboards?

The supplied gauge features eight adjustable backlight colors so you can match dash lighting or improve visibility in low light. The stainless frame and curved anti-fog glass maintain a clear readout, highlighting Empty, 1/2 and Full positions at a glance.

• Eight backlight color options to match dash aesthetics and lighting.
• Anti-fog curved glass keeps the display readable in humid conditions.
• Visible Empty–1/2–Full markers for quick fuel checks underway.
• Stainless frame complements marine and automotive dashboards.

Which tank types and vehicles is this 6" sender best suited for?

The 150mm probe length is ideal for many small to medium fuel tanks found on boats, personal watercraft, cars, light trucks and RVs. Multiple size options are available across the RUPSE line if you need a longer or shorter probe to match a specific tank depth.

• Commonly used on boats, yachts, RVs, cars, trucks and agricultural machines.
• Suitable for tanks carrying gasoline, diesel, water and similar fluids.
• Choose other RUPSE probe lengths for nonstandard tank depths.
• Works well for retrofit or OEM replacement projects.

Who this is for: installers, boat owners, fleet managers and DIY mechanics who need a dependable, corrosion-resistant fuel/water level sender with an easy-to-read gauge and straightforward mounting hardware. It’s a practical upgrade for aging senders or a reliable choice for new builds where accurate, low-maintenance level feedback is required.