Ford Ignition Coil L50718100A, Replaces DG522/9E5Z12029A/UF621/C1658

Ford spark coil set for 4-cylinder: L50718100A directly replaces factory DG522, 9E5Z12029A, UF621, and C1658; fits Ford Focus, Mondeo, Escape, and other 4-cylinder models. Mounted on cylinder head; converts low voltage to high voltage for spark, core ignition component. Installation moderate; 0.5-1 hour; observe plug order and torque. Symptoms: acceleration hesitation, rough idle, hard start, or check engine light indicate coil issue.