Rochester TS010 "TwinSite" Series Sender for Vertical/Spiral Fuel Level Gauges
The TwinSite is a magnetically-driven, variable-resistance sender with potted lead wires.
This model fits the "Senior" sized gauge wells and is rated for 30-240 ohms only
Spec Sheet (If link is inactive copy and paste into browser address bar): https://dl.dropboxusercontent.com/u/31059087/TS010.pdf