The sending unit that MTS provided us with was a direct replica of the OE design. It uses a 30 micron cylindrical screen filter, made from a modern advanced synthetic, which will not rot or become brittle over time. Additionally, the unit features a sealed plastic float to discern fuel level within the tank. The system uses six small sheetmetal tabs with screws to secure the device to the plastic tank, and a thick neoprene O-ring provides a leak-proof seal.