4-wire Universal O2 Sensor part #

[JShadzi at aol.com]

I got this one at the local FLAPS for $45, seems the sensors go bad, but I 
have never seen a bad harness  ;)  

Here ya go, Bosch 13275

BTW-the 4-wire is a good upgrade to the 3-wire, the difference is that the 
4th-wire is an additional ground to the chassis, the 3-wires rely on a ground 
through the sensor body into the exh. manifold (or whatever they are threaded 
in), the 4th wire ensures that corrosion never deminishes the ground on the 
sensor body.

HTH,
Javad