Yamaha YZ250 Spark Plug
The Yamaha YZ250 (250cc) takes an NGK CR6HSA spark plug, gapped to 0.024".
Key takeaways
- Spark plug: NGK CR6HSA.
- Iridium upgrade: NGK CR6HIX.
- Gap: 0.024 inch - set it before fitting.
- Covers 1974-2010 (plug changed across years - see table).
Buy the plugs for your Yamaha YZ250
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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Yamaha YZ250 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1996-2010 | CR6HSA | CR6HIX | 0.024" |
| 1988-1995 | BR8EG | BR8EIX | 0.022" |
| 1984-1987 | - | BR8EIX | 0.024" |
| 1983 | BR9ES | BR9EIX | 0.024" |
| 1974-1981 | - | BR9EIX | 0.024" |
Frequently asked
What spark plug does a Yamaha YZ250 take?
The Yamaha YZ250 takes an NGK CR6HSA spark plug, gapped to 0.024 inch. The iridium upgrade is the CR6HIX. See the by-year table for earlier models.
What is the spark plug gap for a Yamaha YZ250?
The spark plug gap for the Yamaha YZ250 is 0.024 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 YZ250?
Yes. The CR6HIX is the iridium version of the CR6HSA - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Yamaha YZ250
We cover the other consumables for your machine too - the exact fit, cited, in one place.