Suzuki GS550 Spark Plug
The Suzuki GS550 (550cc) takes an NGK BR7ES spark plug, gapped to 0.028".
Key takeaways
- Spark plug: NGK BR7ES.
- Iridium upgrade: NGK DR9EIX.
- Gap: 0.028 inch - set it before fitting.
- Covers 1972-2003 (plug changed across years - see table).
Buy the plugs for your Suzuki GS550
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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Suzuki GS550 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 2000-2003 | BR7ES | DR9EIX | 0.028" |
| 1972-1974 | BR8ES | BR7HIX | 0.032" |
Frequently asked
What spark plug does a Suzuki GS550 take?
The Suzuki GS550 takes an NGK BR7ES spark plug, gapped to 0.028 inch. The iridium upgrade is the DR9EIX. See the by-year table for earlier models.
What is the spark plug gap for a Suzuki GS550?
The spark plug gap for the Suzuki GS550 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 Suzuki GS550?
Yes. The DR9EIX is the iridium version of the BR7ES - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Suzuki GS550
We cover the other consumables for your machine too - the exact fit, cited, in one place.