Review on 🚀 Denso 234-4445 Oxygen Sensor: Advanced Air-Fuel Ratio Monitoring for Optimal Performance by Joshua Cameron

It may be my imagination but my car seems to be running a little better since I replaced the O2 sensors at 170,000 miles. Denso (Japanese company) is original equipment. Manufacturer (OEM) so they are perfect to replace the old ones on my 2007 Subaru Impreza 2.5i. They're packed with an anti-seize compound for extra high temperatures so they don't get permanently stuck in your exhaust system. All you really need to get the job done is a 22mm open end wrench and wire cutters (side cutters). I have a socket specifically designed for O2 sensors, but due to vertical limitations it was easier to use an open-end wrench. Using wire cutters, the old clip holding the wire in the middle is cut and removed. Assembled in the USA.