NGK NGK Laser Iridium Spark Plug P/N:6588
NGK 6544 spark plug for the 2002-2009 Honda VFR800 Interceptor 782cc and other vehicles ignites the air-fuel charge in the cylinder. Among NGK spark plugs, this Laser Iridium plug has a fine wire iridium alloy center electrode.
Hard starting, a misfire or a rough idle can mean a plug has worn out. Before you replace this plug, rule out the ignition coil, the plug wire and the fuel supply as the cause of those signs. The quantity depends on the application: the 2002-2009 Honda VFR800 Interceptor 782cc takes one plug and the 2008-2009 Honda Aquatrax F-15X takes four. This listing is one plug.
The motorcycles and watercraft this plug fits include the 2002-2009 Honda VFR800 Interceptor 782cc, the 2002-2009 Honda VFR800A Interceptor ABS 782cc and the 2008-2009 Honda Aquatrax F-15X. If your machine is not named here, look it up in the "Vehicles it fits" section.
Fit and size
Build and materials
Interchange: 31911-HW1-671 · IMR9D-9H
This part cross-references / interchanges with the following part numbers:
Is the NGK 6544 spark plug the right one for the 2008-2009 Honda Aquatrax F-15X?
Yes. NGK 6544 is listed for the 2008-2009 Honda Aquatrax F-15X, which takes four plugs. This listing is for one plug.
Is this one of the NGK iridium spark plugs with a platinum ground electrode?
Yes. NGK 6544 has a fine wire iridium alloy center electrode and a platinum tip on the ground electrode.
What gap, thread size and heat range does this spark plug have?
This spark plug has a gap of .036 in (0.9 mm), an M10 - 1.0 thread and a heat range of 9. Its thread reach is 0.750 in (19.0 mm).
How can I tell whether this spark plug is worn?
With the engine off and cool, a worn plug can show rounded electrodes, a cracked ceramic or heavy deposits. Hard starting or a misfire can come from a worn plug.
Does the number IMR9D-9H match NGK 6544?
Yes. IMR9D-9H is NGK's other number for NGK 6544, so the two refer to the same plug.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.