Yamaha TT600 Spark Plug
The Yamaha TT600 (600cc) takes an NGK DR7EA spark plug, gapped to 0.035".
Key takeaways
- Spark plug: NGK DR7EA.
- Iridium upgrade: NGK DPR8EIX-9.
- Gap: 0.035 inch - set it before fitting.
- Covers 1985-1986 (plug changed across years - see table).
Buy the plugs for your Yamaha TT600
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 TT600 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1986 | DR7EA | DPR8EIX-9 | 0.035" |
| 1985 | DPR8EA-9 | DPR7EIX-9 | 0.035" |
Frequently asked
What spark plug does a Yamaha TT600 take?
The Yamaha TT600 takes an NGK DR7EA spark plug, gapped to 0.035 inch. The iridium upgrade is the DPR8EIX-9. See the by-year table for earlier models.
What is the spark plug gap for a Yamaha TT600?
The spark plug gap for the Yamaha TT600 is 0.035 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 TT600?
Yes. The DPR8EIX-9 is the iridium version of the DR7EA - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Yamaha TT600
We cover the other consumables for your machine too - the exact fit, cited, in one place.