heated O2 sensor number for 350 TBI truck?

[Bja1078 at aol.com]

bouch makes almost all the O2 sensors for the big 3. I work at a cadillac and 
pontiac dealer and can tell u we go thru lots elsecially on the cad's. If u 
go thou a dumpster u should be able to find prentiful 4 wire ones. the usuall 
pro is the pcm does not see a response quick enough, they work fine and its 
usually a fluke once in a blue moon heater thing,  I have saved lots for my 
race car.... give it a try u can tell with a volt meter real quick when they 
are truely junk. besides their free....

-Brian