This is brand new. Just came in the mail. I bought it for my new gauge as part of my BMW engine conversion, but I found out I can use a dual sensor for both the ECU and gauge as per the Defender M52 ETM. It's made by AllMakes. This works with the 99-06 Defender coolant gauge, as fitted on ROW 300Tdi's.
This is OEM for (according to Atlantic British):
Discovery I | '94 - '99
Range Rover Classic | '95
Range Rover 4.0 (P38) | '95 - '96
Range Rover 4.6 (P38) | '95 - '96
Defender 90 | '97
| 4.0 only
$10 shipped within the lower 48.