Review on 234 4012 Upstream Downstream Chevrolet Silverado by Brandon Havlicek

I recently purchased a replacement sensor for my Chevrolet Silverado and i must say this product is top-notch! Based on my experience, it is one of the most efficient automotive sensors that I have ever used... It accurately detects when the engine is running and has greatly improved my vehicle`s overall performance. The only downside is that the installation process was slightly difficult, but once it was in place, it worked like a charm..