The 9349-07240 (formerly 8349-7240) is an adjustable depth, adjustable length marine grade sending unit is manufactured by Rochester Sensors. This fuel sender is equipped with a thick film resistance card with a range of 240-30 Ohms.  It is manufactured for installation into a standard SAE 5-bolt hole flange.  Included with the fuel sender is an 17-1/2" adjustable length float arm that may be cut to length to handle a tank depth range of 11” to 28" (see tank depth chart in photos).  A nitrile rubber float and stainless steel washer are included. It is recommended to install this fuel sender with a Buna-N gasket.  This sending unit is available from the drop-down menu with the gasket included as part number 8349-7240G.  

This unit can be found on some Crownline boats and many others.