Well my 4Runner finally blew a code for the O2 sensor. The original lasted 175K and I need to replace it.. I am replacing the front sensor (before the cat converter) and the Toyota Part # is 89465-80034. My question is, is the Denso Part # 234-4162? I believe the Denso is OE for that truck?? I am having some trouble getting the old sensor out, I got the plug out fine but I guess the nuts are pretty tough since they have been on for so long, any suggestions?? Thanks! Kevin

Last edited by toyotakev; 04/26/10 04:49 PM.