Hey guys..
In the process of doing radiator flush...
removed starter and drain plugs and above the starter is a large 2 prong sensor housing of some sort. Is this the oil block heater plug or am I missing a sensor.
Thank u for your time...

 

Sounds like the engine block heater.

 

It's the block heater, it heats the coolant. A cable gets screwed in there, and the other end plugs into a 110 outlet. (extension cord actually)

Alot of FL trucks are missing the cable.

If you want one in case you visit the great white North...

 

Found the picture I wanted to post.

6.0L Block Heater Cord - DTS Articles - Articles - Articles - DTS

 

Ahhh .. excellent news. Thank you all.. As I didn't want to slap this starter back in missing a part.
Thanks for the quick response!