<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META content="MSHTML 5.00.2920.0" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">Only two WB NTK O2s that I know of, one 5 and
one 7 wire units.</DIV>
<DIV style="FONT: 10pt arial">Use an ohm meter across the whites to make
sure.</DIV>
<DIV style="FONT: 10pt arial">Grumpy</DIV>
<DIV><BR></DIV>
<DIV>I recently came across a few NTK heated oxygen sensors for a very good
price and I was hoping if anyone could identify it's markings that it has on
the shell of the sensor: (8B17) These sensors are a three wire type with two
of them being white and one black. I am under the assumption that the two
white wires are for the heater circuit and the black one for the signal
circuit with the sensors' ground going through the threads. Is this correct
thinking? Does this marking indicate whether or not it is a wide or narrow
band unit? </DIV>
<DIV> </DIV>
<DIV>Any helpful information would be appreciated. Thanks for your time.</DIV>
<DIV> </DIV>
<DIV>Regards....</DIV>
<DIV> </DIV>
<DIV>Phil Rickard- Engine builder/Tuner for Les Stanford-Pirate Racing
Corvette C5R......Formerly with L.P.E. </DIV></BLOCKQUOTE></BODY></HTML>