Suzuki RM-Z450 Spark Plug
The Suzuki RM-Z450 (450cc) takes an NGK DIMR8A-10 spark plug, gapped to 0.024".
Key takeaways
- Iridium plug: NGK DIMR8A-10.
- Iridium upgrade available in the same fit.
- Gap: 0.024 inch - set it before fitting.
- Covers 1981-1983 (plug changed across years - see table).
Buy the plugs for your Suzuki RM-Z450
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 RM-Z450 spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1981-1983 | - | DIMR8A-10 | 0.024" |
| 1981 | - | CR8EIB-10 | 0.040" |
Frequently asked
What is the spark plug gap for a Suzuki RM-Z450?
The spark plug gap for the Suzuki RM-Z450 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 Suzuki RM-Z450?
Yes. The DIMR8A-10 is the iridium version of the null - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Suzuki RM-Z450
We cover the other consumables for your machine too - the exact fit, cited, in one place.