OBX Silver Fuel Injection Rail for 00-04 Ford Focus 2.0L Zetec (except SVT) Bolt-on precise fitting  Dyno tested and proven to gain 4-6 HP and torque  Lifetime warranty from manufacturer defects  Precisely Machined From The Solid Billet 6061 T-6 Aluminum . OBX Injection High Technology * 7/16 Enlarged bore for maximun fule flow exceleration. * One piece lightweight design to prevent fuel leakage. * Bolt-on precise fitting. * Mounting hardware areincluded. * Dyno tested and proven to gain 4~6 horse and torque power * Backed by OBX limited lifetime warranty