Yamaha TS650 Spark Plug
The Yamaha TS650 (650cc) takes an NGK CR9EK spark plug, gapped to 0.028".
Key takeaways
- Spark plug: NGK CR9EK.
- Iridium upgrade: NGK BPR7EIX.
- Gap: 0.028 inch - set it before fitting.
- Covers 1973-1975 (plug changed across years - see table).
Buy the plugs for your Yamaha TS650
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.
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Yamaha TS650 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1975 | CR9EK | BPR7EIX | 0.028" |
| 1973-1974 | BPR7ES | BR8EIX | 0.028" |
Frequently asked
What spark plug does a Yamaha TS650 take?
The Yamaha TS650 takes an NGK CR9EK spark plug, gapped to 0.028 inch. The iridium upgrade is the BPR7EIX. See the by-year table for earlier models.
What is the spark plug gap for a Yamaha TS650?
The spark plug gap for the Yamaha TS650 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 TS650?
Yes. The BPR7EIX is the iridium version of the CR9EK - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Yamaha TS650
We cover the other consumables for your machine too - the exact fit, cited, in one place.