YDO Ignition Coil for Onan P218G P220 P224G Engines — Direct-Fit Replace OEM 166-0772, Points-Style Spark

This ignition coil is a direct-fit aftermarket replacement designed to restore spark performance on a wide range of Onan small engines. Built to match OEM electrical and mechanical specifications, the unit is intended for routine repairs and preventive maintenance where the original coil has failed or shows signs of wear. The fitting list includes popular points-ignition engines used in generators, pumps, and other stationary equipment.

Which Onan engine models will this coil work with?

The YDO coil is made for numerous Onan points-style engines, including BF, BFA, BG, BGA, BGE and several B43/B48 variants, plus CCK and N-series models. Verify compatibility by checking the engine designation and comparing the original part number.

• Fits P218G, P220, P224G engine families
• Compatible with BF, BFA, BG, BGA, BGE models
• Works with B43E, B43G, B43M, B48G and N-series variants
• Replaces OEM part numbers like 166-0772, 166-0804, 541-0522

How does this ignition coil compare to an OEM unit?

Although not manufactured by Onan, the coil is produced to meet OEM form-fit and function standards so it installs and operates like the original. Materials and winding techniques are selected to provide stable spark energy under typical operating conditions. The goal is equivalent performance without the OEM price tag.

• Meets OEM electrical and mounting specifications
• High-grade insulation and windings for reliable spark delivery
• Direct bolt-on replacement—no modification required
• Quality-tested for consistent output across temperature ranges

What installation steps and checks should I follow?

Installation is straightforward for anyone familiar with small-engine maintenance: disconnect the battery or spark source, remove the old coil, install the new coil using original mounting points, and set air gap/points per engine service specs. After fitting, confirm spark timing and secure wiring to prevent chafing.

• Disconnect power and follow engine-specific safety steps
• Use original mounting holes and fasteners for proper alignment
• Set the correct coil-to-magneto air gap when required
• Test for consistent spark before final assembly

What warranty and support does YDO provide?

YDO includes a 6-month quality warranty covering workmanship defects and offers a 30-day return window if the part doesn’t meet expectations. Customer support can assist with fitment questions or replacement processing should any covered issue arise.

• 30-day hassle-free returns policy
• 6-month warranty with replacement coverage
• Customer support for fitment and troubleshooting
• Clear guidance on matching OEM part numbers

Who is this for: This ignition coil is intended for owners, technicians, and fleet managers who maintain Onan points-ignition engines in generators, compressors, or backup power equipment. It’s a practical choice when the original coil is damaged, weak, or unavailable and you need a dependable, drop-in replacement that adheres to the original specifications without unnecessary overhaul.