Status unknown Ski Lites (archive) · IHRA · 2026 rulebook · J.7
J.7 permits aftermarket spark plugs.
Rulebook version V.20260603 · Read the rulebook, Ski Lites
NGK · Engine
NGK B8HS spark plug, Yamaha SuperJet
The 12.7mm reach the 701 head needs, and the spare to always pack; the common 19mm-reach plug is wrong for this engine. The heat range is not settled: NGK lists B8HS for 1998, Yamaha's catalogue lists B7HS (94702-00040-00) for 2001 and 2007.
Price on request Stock not tracked
Ask about this partNot yet listed for online checkout. Ask for the price and lead time, no obligation.
Small parts, flat rate quoted when you enquire, ships worldwide from the US
Once orders open: returns within 30 days, no salt damage.
- Class legality
- IHRA Ski Lites: status unknown · IJSBA Ski Lites: status unknown
Specification
- Part number
- B8HS
- Condition
- New aftermarket
- Supply
- Still in production
Listed: 1998. Recorded, not listed: 1994 to 1997, 1999 to 2009.
Filled: the years this part is listed to fit, 1998, out of every Yamaha SuperJet 701 year the archive records. For a hollow year, ask before you buy.
How we know: the part's fitment record, and the archive's SuperJet 701 model rows, 1994 to 2009; square nose and round nose are owners’ names, not Yamaha’s.
Both plugs take a 14mm thread. What differs is the reach: the length of thread that runs on past the seat and into the head.
How we know: NGK's part finder, as this shop's pit box list records it (B8HS, 14mm thread and 12.7mm reach; BR8ES, 14mm thread and 19.0mm reach). The parts of a plug, its threaded end running on below the seat into the cylinder head, are US patent 4,810,929, line 76 of the held copy.
Not to scale.
Status unknown Ski Lites (archive) · IJSBA · 2024 rulebook · SKL.5.4, SKL.3.11
SKL.5.4 and SKL.3.11 permit aftermarket spark plugs, including a plug of a different heat rating.
Tell us your ski. We answer cost, fit and class legality, or say we do not know.
B8HS · NGK