Kawasaki KL650 Spark Plug
GarageDex's powersports data shows the Kawasaki KL650 uses a CR9EIA-9 spark plug, gapped to 0.036".
Spark plug fitment by year
| Years | Standard plug | Iridium upgrade | Gap |
|---|---|---|---|
| 2006-2010 | - | CR9EIA-9 | 0.036" |
600cc motorcycle. Match the exact part code, thread reach, and heat range. The iridium column is the same-fit upgrade for a longer service life.
Spark plugs for your Kawasaki KL650
The recommended plug is a CR9EIA-9. Match that code - spark plugs are thread-, reach-, and heat-range-specific, so the part number matters more than the brand. Worth considering: the CR9EIA-9 iridium upgrade - it fits the same port, fires cleaner, and lasts far longer between changes.
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Frequently asked
What spark plug does a Kawasaki KL650 take?
GarageDex's powersports data shows the Kawasaki KL650 uses a CR9EIA-9 spark plug, gapped to 0.036".
What is the spark plug gap on a Kawasaki KL650?
The Kawasaki KL650 spark plug gap is 0.036". Set the gap with a feeler gauge before install - iridium plugs come pre-gapped but always verify, since a wrong gap causes misfires and hard starts.
How often should I change the spark plugs on a motorcycle?
Standard plugs typically want replacing every 8,000-12,000 miles (or per your service manual); iridium plugs go much longer. Fouled or worn plugs cause hard starts, misfires, and poor fuel economy - a cheap part that punches above its weight.