Do all 86-95 Toyota 4runners and trucks use the same Denso 234-1056 for the 02 sensor with the exception of the CA 94-95 models.

 

It looks like Denso 02 sensor number for 88-95 is 234-4161 can any one confirm this.

 

85-87 use 1 wire sensor in exhaust manifold under hood. Starting in 88 they went to 4 wire heated sensors located underneath vehicle in the exhaust pipe. I'm not sure on the part numbers but 234-1056 is a 1 wire and 234-4161 is a 4 wire but it looks like it goes to 95 and newer.

 

to throw a spanner in the works, the one i just bought for my 92 v6 was a 234-4052. 4 wire