The correct spark plug is determined by the engine manufacturer and exact engine model—not simply the mower brand. Always verify the plug specification in the engine documentation.
Information to collect
- Engine manufacturer
- Engine model/type/code or specification number
- Existing spark-plug number
- Manufacturer-specified plug gap
Why exact matching matters
Thread diameter, reach, heat range and seat style can differ even when plugs look similar. Installing the wrong plug can cause poor performance or engine damage.
Honda BPR5ES / 98079-55846
MowForge currently carries a replacement spark plug listing referencing Honda BPR5ES / 98079-55846 for compatible applications. Verify your engine specification before ordering.
View the Honda BPR5ES replacement spark plug