Part Numbers
Manufacturer Coolant temperature sensor (CLT) Air temperature sensor (IAT)
GM 12146312/15326386 25036751
Standard TX3 AX1
GP Sorensen TSU81 779-19001
AC Delco 213-928 213-190
Niehoff DR134AK TS83631/DR-136W
Wells SU109 (includes connector) SU107
MSD 2310 (includes connector) 2320 (includes connector)
Supplier
Wells 254 235
NAPA ECHTSC200 ECHTSC300
Niehoff   PS77421 
Conductite/Dorman 85100 85110
Autozone PN 047131  
Known Applications Years
All GM (Chevrolet, Pontiac, Cadillac, GMC, etc.)  81-96
Honda Truck 94-96
Isuzu Truck 92-96
Jeep 82-87