hi did somebody put a heated o2 sensor instead of the regular o2 sensor, if so which heated o2 sensor has the same tread as the regular one, thanks

I use this one and advise our header customers to replace their stock unit with as it will make the engine run better when cold.

http://www.usautoparts.net/...S-3000&x=-390&y=-217

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What is the different between a heated sensor and a non heated sensor? I'm having problem with the 02 sensor on my 3800sc. And they don't have a heated or non heated sensor. Please explain.

A non-heated O2 sensor relies on exhaust heat to bring it up to temperature, and a heated O2 sensor has a built-in heater, which brings it up to operating temperature faster than a non-heated one. This allows the ECM to go to closed-loop operation sooner, reducing emissions and using less fuel. Installing a heated O2 sensor is a modification I plan to do one of these days...

All oxygen sensors use the same thread size and pitch, which is M18x1.5. If you ever shop for exhaust components to build your own exhaust you'll see that weld in O2 sensor bungs are only offered in one size, which is a universal size.

quote Originally posted by lateFormula: All oxygen sensors use the same thread size and pitch, which is M18x1.5. If you ever shop for exhaust components to build your own exhaust you'll see that weld in O2 sensor bungs are only offered in one size, which is a universal size.

For those contemplating such you can weld a nut with the same thread -same as oil pan plug- to you down pipe and then use any o2 you want. That's how we do them on pour headers.

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