Moeller Fuel Tank Sending Unit 6''-12'' #114-03572210 Electric Sending Units Swingarm Electric Sending Units gather fuel level information the same way as the mechanical sending units. It does, however, connect to a dash mounted gauge without a conversion capsule. They are also a DIY product, letting the consumer measure their tank depth and make the swingarm the correct length. Internal components will not rust or corrode. Float rotates easily in 90 degree increments for tanks wall & baffle clearance.