大众奥迪点火线圈 UF-502 7B0905715 替代4606869系列

Volkswagen Audi ignition coil UF-502 (7B0905715), replaceable with 4606869 series, compatible with many six-cylinder engine models. Mounted on the valve cover, converts low voltage to high voltage to ignite the mixture; core component of engine operation. If experiencing weak acceleration, rough idle, hard starting, or engine check light, usually coil aging or damage. Installation difficulty medium; estimated labor about 1.5 hours; replace by cylinder sequence and confirm torque.