Your jet ski's running a touch hot and you need the correct heat range, not a one-size-fits-all plug. The NGK BR9ES is a PWC-specific plug at heat range 9. $14.45 RRP. Cross-check your watercraft's manual for the exact part number, fit it, and get back out on the water
| brand | NGK |
| part_number | BR9ES |
| heat_range | 9 |
| application | PWC / Jet Ski |
| rrp | $14.45 |
| category | Automotive & Outdoor Electronics |