NGK ER9EH Spark Plug for Honda Grom (KOSO 4V Head)
Engineered for precision ignition, the NGK ER9EH delivers reliable performance in high-revving small-displacement engines. Designed specifically for Honda Groms running KOSO 4V heads, this plug is built to handle the demands of modified and performance-tuned setups.
Key Features
- Trivalent Metal Plating – Superior corrosion and seizure resistance for long service life
- Triple Seals – Prevents combustion gas leakage for consistent power delivery
- Corrugated Ribs – Reduces the risk of flashover for reliable ignition
- Pure Alumina Silicate Ceramic Insulator – Optimal strength and heat transfer
- Copper Core – Aids in efficient heat removal to prevent pre-ignition
Fitment
Compatible with Honda Grom (OG/1st Gen) and 1st Gen Monkey bikes equipped with a KOSO 4V head only.
Part Number: ER9EH | SKU: 5869 | Vendor: NGK Spark Plugs
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