The Honda Rebel 250 uses a single spark plug for its single-cylinder engine. In most model years, the common replacement is an NGK spark plug such as CR6HSA, or an equivalent from Denso, but the exact part number can vary by year and market. Always verify with the owner's manual or a Honda dealer for your bike's year.
Overview of the spark plug needs
Understanding which plug to use involves recognizing that the Rebel 250's engine is a straightforward, four-stroke single-cylinder design. It relies on a correctly gapped, resistor-type spark plug to maintain optimal ignition performance, fuel economy, and emissions. Heat range and resistor type matter for performance and interference suppression.
Common plug options and year considerations
Before listing the recommended options, note that the exact plug you need is tied to the year and market of your Rebel 250.
- Single-spark design: The bike uses one spark plug, so there is no multi-plug configuration to manage.
- Common NGK recommendation: NGK CR6HSA is frequently suggested for this engine, with Denso equivalents used in some regions.
- Heat range and resistor type: Choose a standard heat-range plug with a resistor (most modern motorcycle plugs are resistor type) to minimize radio frequency interference and ensure reliable ignition.
- Gap specification: A typical gap is around 0.028–0.031 inches (0.7–0.8 mm) unless the manual specifies differently.
Concluding from the listed options, you should verify the exact part with your manual or a dealer and ensure you buy a spark plug designed for motorcycles with the appropriate thread size and reach for the Rebel’s cylinder head. If in doubt, carry the old plug to the parts counter to match thread size and heat range.
Maintenance tips for spark plugs
Regular inspection, cleaning, and replacement at intervals recommended by Honda will help keep the Rebel 250 running smoothly. If you notice hard starting, misfiring, or rough idle, checking the spark plug is one of the first maintenance steps to take.
Summary
In short, the Honda Rebel 250 uses a single spark plug. The most commonly recommended option is NGK CR6HSA or its equivalent; always confirm the exact part number for your bike’s year and market, and ensure proper gap and installation. By selecting the right plug for the engine’s heat range and using a resistor-type plug, riders can maintain reliable ignition and efficiency.
What spark plug does a Honda Rebel 250 take?
NGK (2983) CR6HSA Spark Plug - Pack of 4.
What size spark plug for ms250?
Choose NGK BPMR7A for your chainsaw or trimmer to ensure smooth starts and reliable power—order now!
What size spark plugs for Honda Recon 250?
A failing spark plug is a common cause of hard starting, rough running, and power loss on the TRX250 Recon. Use an NGK or Denso brand plug for OEM-equivalent quality; the standard plug is NGK DPR8EA-9. For riding in weather below 41°F (5°C), use the hotter NGK DPR7EA-9 plug to prevent fouling.
What does Honda recommend for spark plugs?
For Honda engines we recommend only using NGK/Denso spark plugs. Using other spark plugs like Bosch, Autolite, etc has been the cause of countless ignition misfires that we've seen which could have easily been eliminated by using NGK/Denso plugs. Why?