• NGK Spark Plug - ER9EH - Howling Moto
1 1

NGK Spark Plugs

NGK ER9EH Spark Plug – Honda Grom KOSO 4V Head

NGK ER9EH Spark Plug – Honda Grom KOSO 4V Head

5869

$16.95 USD
$17.95 USD $16.95 USD
Sale Sold out
Shipping calculated at checkout.

Available to Order: Ships later. Lead time emailed after purchase.

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

View full details

  • Free Shipping

    We offer free shipping on any order over $200!


    Some restrictions may apply for big box and freight items.

  • Howling Tech Support

    Please feel free to call or email at any time for questions on our offerings.

Join the pack!

In addition to our online parts sales we offer great in house service and customization of your favorite bikes.