How to Find the Right Marine Fuel Tank Sending Unit for your truck/Camper/Boat?

June30,2025   By Mike Su

When you replace the Fuel Sender Unit in your Truck/Camper/ boat,

you can choose to replace it with the same brand or opt for a premium option like 100TECH for reliable performance.

If you already have a 100TECH Sender, you will need to identify the model. Look at the model number on the aluminum cap at the top of the unit.

If you do not have a 100TECH level sender and need to identify a 100TECH  replacement for your sending unit, Please contact us with the following information:

1. Tank depth or current sender length

2. Output/operating ohms range

3. Mounting style (how the unit mounts to the tank)

If You’re Unsure of The Type Sensor That Was Installed Into Boat/Vehicles.Please Use The Multi-meter To Measure The Resistance Range Of Your Sending Unit When Empty And Full (Example: Approx 8 And 184 ohms ). It should be 10-180 ohm Range.

100TECH service Team will be here to talk with you to help find the correct boat fuel sender or gauge for you.