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Motul Gear 300 Synthetic 75W90 ( 1 Quart ) Motorcraft Spark Plug Set Focus ST / RS NGK Iridium Spark Plug Set LTR71X-II 0.028" Focus ST
75W90 Synthetic OEM replacement One step colder
Ford Racing 2 Steps Colder Spark Plugs Focus ST/RS AEM Tru-Boost Gauge Type Controller 52mm 35 PSI CSF Mountune Triple Pass Radiator Upgrade (13 - 18 Fiesta ST)
2 steps colder Displays boost up 35 PSI Superior performance
Ford Racing Calibration with Spark Plugs Focus ST Ford Racing Calibration with Spark Plugs and Cold Air Intake Focus ST Ford Racing FR1 Power Upgrade Pack Focus ST
Includes tune and spark plugs Includes tune, spark plugs, and cold air intake Includes tune, spark plugs, cold air intake, and cat back