Greetings everyone,
Just recently purchase a 1998 SC300. After getting a diagnostic done, determine only issue was o2 sensor needs to be replace. So I plan to buy one but before doing so wanted to see what you guys recommend. I was looking at one made by "Denso". Should I get this or is there a different OEM brand better for me to choose?

Denso sensors arent bad, and are going to be much cheaper than getting an OEM one from a dealership. I ran Denso o2's when I was na-t, and they did fine.

Okay cool! Thanks for the heads up on this. I really appreciate it

what check engine code did they tell you it threw for the o2 sensor?

use the oem denso plug and play! I used the pigtail kind on my 400 and they were still throwing codes. I replaced with oem denso ones from amazon and boom fixed everything!!

Here is what it says on the receipt for the diagnostic:

Heated oxygen sensor Bank 1 Sensor 2 (HO2S12)
heater circuit malfunction

Looks like Denso it is! Thanks for this info! It is much appreciate it

Denso Part Number: 234-4630 Up-stream sensor

Is the 300 the same as the 400?

Thanks! Got this info here now saved!


Same shell but different engines. 400 has the v8, where as the 300 has the inline 6.

I knew that. Just wondering if the 02 sensors are the same..

LOL my bad mate. Im just reading your message word for word. Should be more specific and asked if the "O2 Sensors" on these vehicles are the same. But to be honest I dont know the answer to this question

i dnt think the o2's are the same for 300-400 but i could be wrong
and did u look into the universal o2's from autozone? i think theyre like 55 ea for up stream thats all ud need

Haven't thought of that. I'm glad you mention this to me. Thanks, I may consider this as well.

Check out amazon, they had some for the sc300 for only $50 vs 100's everywhere else