Fuel Sending Unit | SAE 5-Bolt Pattern | Adjustable 5-25" Depth Get accurate fuel readings every time with sending units engineered to work with any tank setup - whether you're building fresh or upgrading what's already under your classic. We've got you covered with four different sending units that deliver reliable performance across the board. Every unit features the same quality foundation: SAE 5-bolt pattern, 10-32 stainless steel screws, Buna-N gasket, and an adjustable depth reader that handles tanks from 5 to 25 inches deep. Reading the Numbers: The first number = empty OHM readingThe second number = full OHM reading So when you see 0-90 OHM, you're looking at 0 OHMs when empty, 90 OHMs when full. Straightforward specs that take the guesswork out of matching your gauge to your tank.