Review on 🔧 Optimize Fuel Delivery: Delphi FP10021 Fuel Injection Pressure Regulator by Jonathan Davenport

This regulator does not sit flush in the rail like the original, even though it was supposed to fit my truck. I believe they sent an incorrectly packaged and incorrectly labeled part. It doesn't look like the original, although the picture in the listing is exactly the same as the original. it is an illusion. I went to Napa because that's the way they sell the Delphi controller and it has the same part number but doesn't look like the one I got from Revain (see image above where both controllers are compared). I also attached the original image separately. This regulator caused fuel leaks and misfires. The item has been returned. I considered ordering another one, but after reading the other reviews I changed my mind.