Review on DOICOO Oxygen O2 Sensor Downstream 234-4732 2344732 for Subaru Impreza Forester Legacy Outback Baja Impreza WRX Saab 9-2X Compatible by Jeremy Kakaruk

It seems to have solved my problem on my wrx 03 with manual transmission. I had similar misfires at low revs. This would happen randomly and the misfires would go away at an accelerated rate. I chose the bottom sensor 02. This sensor was a perfect fit. At first the car had the same symptoms, but after the car started the symptoms disappeared. I will update when they come back. Regardless, this sensor works and is so affordable that it's worth replacing the old one. O2 sensors are a consumable item and will eventually need to be replaced. To update; Symptoms returned and using the Torque Pro app I was able to identify the misfires on cylinder 1, swapped the coil packs for cylinder 2 and the misfire moved with the coil pack. Replaced coil and problem solved. However, this 02 sensor gets 5 stars for the perfect fit and it does what it's supposed to. The voltage ranges from 0.01 to 1.0 as it should. A defective sensor almost always stays at the same voltage.