2001 Ford Focus Spark Plug Gap. 2)new air filter (check every 35000 miles) 3)new fuel filter (every 35000 miles) 4)1 bottle of stp fuel treatment (red bottle) 4x a year. Preset gap (mm) 1.016mm (1) 1.05mm (1) 1.09mm (1) 1.15mm (1) 1.1mm (1) 1.35mm (1) 1.

Spark plug wire retainer / clip. Hard work never hurt anyone, but why take a chance. The plug numbers are the motordraft numbers.