name this part

[2slosho]

While removing my heads I broke the plug on a sensor. It is the one that screws in to the top of the block. Appears to be app. one inch bolt. Number on the sensor is 3L20AB. Any suggestions?
TIA
Dav headbang e

 

[shotimev6]

knock sensor??

 

[twr]

shotimev6:
knock sensor??

Yep, yep - that be the knock sensor.

 

[SLOSHO89]

shotimev6:
knock sensor??

That would be my guess too. Is it between the heads and below where the injectors would normaly be?

Efren

 

[2slosho]

Thanks. Mistakenly set rear head on top of plug. Damn coolant hoses! doh