02 sensors
Some people like them...mainly better than the Bosch O2's. But, I'd go for the AC Delco's if you're going to get new ones. You can still get the C5 rear O2's...just have to find the part number. Just call the local dealership for that and then shop around.
denso's are supposed to be lead tolerant. GN people have been ruuing them for years. I got some and one failed during a hard drive threw flooded highways. Probley couldnt stay warm, anyways other than a small glitch no problems, and I have about 50,000 miles on them.
