CrankDex

Yamaha YZ100 Spark Plug

The Yamaha YZ100 takes an NGK BR7ES spark plug, gapped to 0.022".

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Key takeaways

  • Spark plug: NGK BR7ES.
  • Iridium upgrade: NGK BR7EIX.
  • Gap: 0.022 inch - set it before fitting.
  • Covers 2008-2009.
Standard PlugBR7ES
Iridium UpgradeBR7EIX
Gap0.022"
Verified fitLast checked
Sources: NGK powersports application catalogue
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.

Buy the plugs for your Yamaha YZ100

The standard plug is the exact-fit replacement. The iridium version drops into the same spot, lasts longer, and fires a little stronger for a few dollars more. Many engines take more than one - check how many cylinders you have.

Shop the BR7ES plugStandard NGK plug + multi-packsShop Upgrade: BR7EIX iridiumLonger life, stronger sparkShop

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Frequently asked

What spark plug does a Yamaha YZ100 take?

The Yamaha YZ100 takes an NGK BR7ES spark plug, gapped to 0.022 inch. The iridium upgrade is the BR7EIX.

What is the spark plug gap for a Yamaha YZ100?

The spark plug gap for the Yamaha YZ100 is 0.022 inch. Check and set the gap before fitting a new plug - most powersports plugs need a small adjustment out of the box.

Can I use an iridium plug in a Yamaha YZ100?

Yes. The BR7EIX is the iridium version of the BR7ES - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.

More parts for your Yamaha YZ100

We cover the other consumables for your machine too - the exact fit, cited, in one place.

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