Honda ATC250R Spark Plug
The Honda ATC250R (250cc) takes an NGK BR9ES spark plug, gapped to 0.032".
Key takeaways
- Spark plug: NGK BR9ES.
- Iridium upgrade: NGK BR9EIX.
- Gap: 0.032 inch - set it before fitting.
- Covers 1977-1984 (plug changed across years - see table).
Buy the plugs for your Honda ATC250R
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.
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Honda ATC250R spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1982-1984 | BR9ES | BR9EIX | 0.032" |
| 1981 | BR8ES | BR8EIX | - |
| 1977-1980 | BR7ES | BR8EIX | 0.028" |
Frequently asked
What spark plug does a Honda ATC250R take?
The Honda ATC250R takes an NGK BR9ES spark plug, gapped to 0.032 inch. The iridium upgrade is the BR9EIX. See the by-year table for earlier models.
What is the spark plug gap for a Honda ATC250R?
The spark plug gap for the Honda ATC250R is 0.032 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 Honda ATC250R?
Yes. The BR9EIX is the iridium version of the BR9ES - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Honda ATC250R
We cover the other consumables for your machine too - the exact fit, cited, in one place.