**Disclaimer** I ended up not using the item in the end due to utilizing another oil galley on the FA24DIT.
That being said, I can confirm that this does fit the 2022+ WRX. This part is threaded for 1/8 BSPT which is the same as the OEM sensor. In order to use an aftermarket oil pressure sensor in conjunction with the OEM sensor, you'll need a male 1/8 BSPT to female 1/8 NPT adapter. Aftermarket sensors like AEM are NPT. So regardless off whether or not you use both sensors or replace the OEM sensor, you'll need an adapter. The block is BSPT and the Killer B adapter is BSPT. Forcing NPT into BSPT will damage threads.
All that said, this is a very well made part. High quality. You can find the additional adapter for around $5-8. I will be keeping this as a backup in my parts bin. Definitely worth the purchase.