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darrellyates · 01-06-2017, 04:29 PM

Regarding o2 Sensor...

My GM crate engine information pack calls out for GM# 12581966 or AC Delco # 213-1694. These are what GM calls for. I don't know about any adaptors, I have a harness from RCI in Huntsville that plugs right into the sensor.

I think these are kind of the universal part number for LS swaps, I've seen the AC Delco number used in multiple compatibility charts and cross references. Please note, my engine is an LS3, (6.2), but I think these are even the sensors I ran in my 5.3 swap several years ago.

Good Luck sorting out, hope the numbers help.

01-06-2017, 04:29 PM	#2
darrellyates Registered User Join Date: Jul 2016 Location: Gallatin TN Posts: 376	Re: o2 sensor woes Regarding o2 Sensor... My GM crate engine information pack calls out for GM# 12581966 or AC Delco # 213-1694. These are what GM calls for. I don't know about any adaptors, I have a harness from RCI in Huntsville that plugs right into the sensor. I think these are kind of the universal part number for LS swaps, I've seen the AC Delco number used in multiple compatibility charts and cross references. Please note, my engine is an LS3, (6.2), but I think these are even the sensors I ran in my 5.3 swap several years ago. Good Luck sorting out, hope the numbers help.