Where is the O2 sensor located on 2004 3.8 galant?

On a 2004 Mitsubishi Galant with a 3.8L engine, the O2 sensors are typically located in the exhaust system. There are usually two sensors: one upstream (pre-catalytic converter) and one downstream (post-catalytic converter). The upstream sensor is located near the engine, while the downstream sensor is found further along the exhaust system, closer to the catalytic converter. For precise location, it's best to consult the vehicle's service manual or a repair guide.