Ignition Repair Kit: Includes ignition coil, Ignition Coil Module, Mounting bolt, Mounting bracket, Lock clip, Condenser, Insulating sleeve and Connection terminal. Compatible with John Deere 316, 317, 318, and 420 models with Onan P218G or P220G engines. Not compatible with Kohler engines!
Complete Replacement: Replaces OEM parts 166-0820, 166-0785, 166-0767. The coil and module are mutually dependent; we recommend replacing both at the same time to avoid repeated failure.
Specification: 166-0820 same as 541-0522 solid state only. The Ignition Module Can be checked with an induction tester (166-0820): primary resistance: 3.12Ω, primary inductance: 6.67mh, secondary resistance: 20.5KΩ, secondary inductance: 41.30H.
Improved Engine Performance: Delivers strong, consistent spark for smoother starts, reduced misfires, and better fuel efficiency—restoring your engine's original power.
Easy Installation: Plug-and-play design with included mounting brackets and hardware. No professional tools or modifications required. And we provide 24 months of repair.