Honda XR500R Spark Plug
The Honda XR500R takes an NGK DPR8EA-9 spark plug.
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Key takeaways
- Spark plug: NGK DPR8EA-9.
- Iridium upgrade available in the same fit.
- Set the gap to the manual spec before fitting.
- Covers 1975-1982 (plug changed across years - see table).
Verified fitLast checked
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.
Buy the plugs for your Honda XR500R
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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Honda XR500R spark plugs by year
| Years | Standard | Iridium | Gap |
|---|---|---|---|
| 1982 | DPR8EA-9 | - | - |
| 1981 | DPR8EIX-9 | - | 0.035" |
| 1975-1977 | DR8EA | - | - |
Frequently asked
What spark plug does a Honda XR500R take?
The Honda XR500R takes an NGK DPR8EA-9 spark plug. See the by-year table for earlier models.
Can I use an iridium plug in a Honda XR500R?
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 Honda XR500R
We cover the other consumables for your machine too - the exact fit, cited, in one place.