Description
NGK Standard spark plugs deliver dependable performance with OE-quality construction. The B8S features a solid copper core for superior heat dissipation and a nickel alloy electrode for long service life. Trivalent metal plating resists corrosion and seizing, while triple gasket sealing helps prevent combustion gas leakage. Corrugated insulator ribs reduce flashover, and a robust alumina silicate ceramic insulator improves heat transfer and strength.
- Model: B8S (NGK #3810)
- Style: Standard, non-resistor
- Heat range: 8
- Spark gap: 0.028 in (0.7 mm)
- Thread reach: 9.5 mm
- Hex size: 20.6 mm
- Solid terminal, single ground electrode
| Brand | Models / Series | OEM / Cross-Ref Plug Numbers |
|---|---|---|
| Yamaha | Early YZ80 (70s), GT80 (early years), FS1 “Fizzy”, RD50, TY50, early PW50 (some markets) | B8S, BP8S (alt) |
| Suzuki | AC50, AP50, OR50, TS50 (early), RV50, MT50 minibikes | B8S |
| Kawasaki | G3/G4 90cc series, KV75, early KE100 (varies by year) | B8S |
| Honda | MB5 (some markets), early MT50, NS50 (varies), older generators & pumps | B8S |
| Scooters / Mopeds | Puch Maxi (some versions), Tomos early A3/A35, Motobecane 50, Vespa 50/90 (earlier years) | B8S, B7S (alt in hot climates) |
| Snowmobiles | Vintage Arctic Cat 250/300, John Deere Spitfire, early Yamaha SnoScoot/SnoSport (select years) | B8S |
| Marine / Outboards | Older 2-stroke Mercury/Mariner small HP (select models), Tohatsu/Nissan early 5-8hp | B8S, L82C (cross) |
| Go-Karts / Industrial | Vintage McCulloch 2-stroke kart engines, early Tecumseh 2-cycle industrial motors | B8S |
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