2002 Galant V6 3.0L (Heated Oxygen Sensor)
 

Looking for Upstream & Downstream o2 (heated Sensor). Any recommended sites to review and purchase...
I've used these guys before, but no luck now.
https://www.mitsubishipartssource.com/Mitsubishi_2002_Galant-LS-30L-V6.html

Thank you in advance, everyone.... :)

I purchased NTK brand from Rockauto.com. NTK is the best brand for oxygen sensor.
How many mile is your car? My car is 98K miles. Sensors are still good but I am going to replace them to make sure I do not need tow in the middle of somewhere