Thread: 2000 G20's Use Different O2 Sensors?

This all started with my wife's car (2000 G20) getting lower gas mileage then my turbo Sentra which sees boost all the time.

I replaced the front Oxygen sensor, eBay special "Bosch" 15727 (it was in my car for a while, not exactly sure the condition. Maybe be new or refurb.), and spark plugs and not much has changed. Now the reason I went with 15727 on a stock exhausted car is because the stock ground on the exhaust rusted off, so replacing the O2 sensor with a ground on it should in theory fix this.

So I ordered another 15727, this one is brand new, before installing it I decided to look at Bosch's website, and noticed that the 2000 G20 does not seem to like 15727, but years before and after do. I'm about to go on a long trip, and I need this installed, I'm wondering if I should drive my car instead...


2000 G20:


1999 G20:


2001 G20:


2002 G20:


1999 Sentra SE-L:


2000 Sentra SE:

Well I went ahead and installed it, I guess 1400 miles of driving shall tell me how it does

if it don't I have a brand new OE one that I would sell for $20.

I hope it does I just bought mine for $50 hehe, otherwise I will have to 15727's for my SE-L haha.

OEM ones don't have 4 wires, so when I install the header it will not work well. I don't think a 3 wire even now worked too well haha.