Going to replace my gauges this winter, but when i went to check on prices i noticed there are 2 types of fuel gauges, 240-33 ohms and 0-90 ohms, which do i need? Boat is a 98 25 OL, thanks for any info.

It depends on the sender in the fuel tank but the most common by far is the 33-240 ohm model.

Dan

Thanks, any way to check? volt meter?