What part and part # is this

Hey guys was wondering what part this is and the part #.

Its a little plug that sits at the bottom of the block on the intake side usually has a black case around it but broke when i was swapping my engine I'm hoping someone knows the part#

What year?

Is that the Knock Sensor?

Was there electrical connections?

On my 88, the electrical plug looked similar to injector electrical connectors, with the little wire retainer clip.

Knock Sensor, OEM part number 33002933.

Google Jeep Cherokee Knock Sensor and you'll find listings from the after market people.