Internal measurement components will not rust or corrode! All electrical senders and dash-mounted gauge are calibrated to 33 to 240 Ohm's, an industry standard. 100% inspected during manufacturing to ensure the highest quality. Swingarm float rotates easily in 90 degree increments for tank wall or baffle clearance! Comes complete with 5 hole gasket and mounting screws
2535722 is for tanks 6" to 12" in depth
2535729 is for tanks 12" to 24" in depth