Fuel rail pressure sensor. But if it has an electrical connector along with the vacuum line and fuel inlet, then order it for a 01 ford focus, if it’s like mine anyhow. My 99 se 2.0 was built may 10 1999 and they like to call her the unicorn because most everything is obsolete and not even the ford shop service manuals, are true to my car. I buy parts for a few different cars and frequently stalk pick n pull and eBay. I just replaced that sensor a year ago. Found it online for $20, total junk. Went to Napa Auto Parts and cried as I handed over $200 and it works like a dream. I’ll have to go through my receipts in a bit and shoot ya a part number
