Arctic Cat 400 Spark Plug
The Arctic Cat 400 (375cc) takes an NGK CR6E spark plug, gapped to 0.028".
Key takeaways
- Spark plug: NGK CR6E.
- Iridium upgrade available in the same fit.
- Gap: 0.028 inch - set it before fitting.
- Covers 1999-2008 (plug changed across years - see table).
Buy the plugs for your Arctic Cat 400
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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Arctic Cat 400 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 2004-2008 | CR6E | - | 0.028" |
| 2002 | CR7E | - | 0.028" |
| 1999-2003 | CR7E | CR7EIX | 0.028" |
Frequently asked
What spark plug does a Arctic Cat 400 take?
The Arctic Cat 400 takes an NGK CR6E spark plug, gapped to 0.028 inch. See the by-year table for earlier models.
What is the spark plug gap for a Arctic Cat 400?
The spark plug gap for the Arctic Cat 400 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 Arctic Cat 400?
Yes. The iridium version drops into the same spot - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Arctic Cat 400
We cover the other consumables for your machine too - the exact fit, cited, in one place.