CrankDex

Yamaha YFM45FG Grizzly 450 Spark Plug

The Yamaha YFM45FG Grizzly 450 (450cc) takes an NGK DR7EA spark plug, gapped to 0.028".

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Key takeaways

  • Spark plug: NGK DR7EA.
  • Iridium upgrade: NGK DR7EIX.
  • Gap: 0.028 inch - set it before fitting.
  • Covers 2009.
Standard PlugDR7EA
Iridium UpgradeDR7EIX
Gap0.028"
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 YFM45FG Grizzly 450

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 DR7EA plugStandard NGK plug + multi-packsShop Upgrade: DR7EIX iridiumLonger life, stronger sparkShop

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Frequently asked

What spark plug does a Yamaha YFM45FG Grizzly 450 take?

The Yamaha YFM45FG Grizzly 450 takes an NGK DR7EA spark plug, gapped to 0.028 inch. The iridium upgrade is the DR7EIX.

What is the spark plug gap for a Yamaha YFM45FG Grizzly 450?

The spark plug gap for the Yamaha YFM45FG Grizzly 450 is 0.028 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 YFM45FG Grizzly 450?

Yes. The DR7EIX is the iridium version of the DR7EA - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.

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