O2 oxygen sensor for 2000 - Denso or Bosch, 9125583 or 9202309

[FireFox31]

My 2000 V70 NA has a failed front oxygen sensor heater with code P0135 / ECM-2110. How can I tell which O2 sensor I have so that I can replace it with the correct part number?

Do I need part # 9125583 or 9202309? usparts.volvocars.com says 9125583 is for "1999. 2000- AWD. 5CYL.", while FCP says it is for 1999. usparts.volvocars.com says 9202309 is for "2000 2WD. 5CYL. CH -26212. CH 98623-147859." which is much lower than my chassis number, while FCP says it is for 2000-2001 with my exact engine code. I usually trust usparts.volvocars.com but I can't interpret its info.

Do I need a Denso or Bosch sensor? I've read threads saying that the engine management on a 2000 turbo is Bosch Motronic ME7 while the 2000 NA is Denso. How can I confirm which I have? FCP sells 9202309 in both Bosch and Denso brand so maybe it doesn't matter. They sell the Volvo brand cheaper than both, making me wonder if Volvo is the knockoff now and only Bosch/Denso should be trusted.

[abscate]

Quickest way is to look at your intake air snorkel. ME7 uses the ETB for complete idle air control, DENSO uses a small version of the idle air control valve with an air hose on the snorkel.

I’m 99% your 2000 NA is Denso

[FireFox31]

The attached image seems a bit contradictory. The MAF says Denso on it while the snorkel has two inlets (fuel vapor and oil vapor). There is no small version of the IAC valve, suggesting Bosch ME7.

I'm leaning toward part 9202309. FCP says it's for 2000 and the other is for 1999, and the usparts.volvocars.com info seems to suggest the same in its cryptic way.

[FireFox31]

These are what's in my engine computer box. ECUs labeled TEMIC, not Bosch or Denso??

[abscate]

That’s the Denso idle air valve.

Elizabeth T5 ME7
The Kat LPT ME7
Shagg v70 NA Denso
Evita s70 NA Denso

[FireFox31]

Thanks, I've been wondering for a long time which system I had and where the IAC valve might be.