Part Number For This Sensor ??

[LTX_TY_]

Anybody know a part # for this sensor in the driver side head ?
I believe it's a coolant sensor but just want to make sure I get the correct one
http://i63.tinypic.com/1552w54.jpg

[Sahara54]

From Shbox - AC Delco 213-77 or GM 25037332 (same part either way)

[LTX_TY_]

From Shbox - AC Delco 213-77 or GM 25037332 (same part either way)

Thank you , Appreciate it