Cylinder Exhaust Valve Compatible With : 2001-2004 Ford Escape L4, 2.0L / 121 CID DOHC 16 Valve, Gas, Vin B Zetec, 2000-2004 Ford Focus L4, 2.0L / 121 CID DOHC 16 Valve, Bi-Fuel, Gas, Vin 3,Z, Zetec, 2001-2002 Mazda Tribute L4, 2.0L / 121 CID DOHC 16 Valve, Gas, Ford Zetec