Spark Plug for 2017-2024 Honda CMX300 Rebel 300 & More - NGK 91064

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$18.99
MPN: 91064
Item Package Quantity: 1
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NGK NGK Laser Iridium Spark Plug P/N:91064
NGK NGK Laser Iridium Spark Plug P/N:91064
$18.99

NGK 91064 spark plug for the 2017-2024 Honda CMX300 Rebel 300 286cc and other vehicles is one of the NGK spark plugs that ignite the air-fuel mixture in the cylinder. It belongs to the Laser Iridium High Ignitability line, one of the NGK iridium spark plugs, and pairs an iridium center electrode with a platinum ground electrode.

  • NGK Laser Iridium High Ignitability line with a Square Platinum Electrode (SPE) tip
  • Iridium alloy center electrode, with 6x the density of platinum and a very high melting point
  • Square platinum ground electrode shape for ignitability and service life in high-heat engines
  • Solid copper core of 98% pure copper for heat dissipation and conductivity
  • Trivalent metal plating for anti-corrosion and anti-seizing properties

Quick facts

  • Part: NGK 91064 spark plug
  • Fits: 2017-2024 Honda CMX300 Rebel 300 286cc and other vehicles
  • Condition: New

Hard starting, a rough idle or a misfire can mean a plug is worn, but those signs alone do not prove the plug is at fault, since a weak ignition coil is another common source.

Fits

Besides the 2017-2024 Honda CMX300 Rebel 300 286cc, it fits the 2017-2024 Honda CMX300 Rebel 300 ABS 286cc and the 2021-2024 Honda CRF300L 286cc. If your motorcycle is not one of these, look up its year and model on the Buyer's Guide tab.

Specifications

Fit and size

  • Quantity per application: 1
  • Thread size: M10 - 1.0
  • Thread reach: 19.0 mm (0.750 in)
  • Hex size: 5/8 in (16 mm)
  • Gap: 0.9 mm (.036 in)
  • Projection: mid projection

Build and materials

  • Electrode design: Square Platinum Electrode (SPE), high ignitability
  • Center electrode: iridium alloy
  • Ground electrode: platinum
  • Core: solid copper, 98% pure copper
  • Plating: trivalent metal
  • Condition: New
  • NGK part number: SIMR8A9

In the box

One spark plug. The listing is a single plug, and each Honda model above takes one plug.

Interchange: 31916-MEH-003
SIMR8A9

This part cross-references / interchanges with the following part numbers:

31916-MEH-003, 31916MEH003, 91064, SIMR8A9

Frequently Asked Questions

Will NGK 91064 work as a CRF300L spark plug on a 2021-2024 Honda CRF300L 286cc?

Yes. NGK 91064 is listed for the 2021-2024 Honda CRF300L 286cc, and that motorcycle takes one plug.

What thread size and gap does the NGK 91064 spark plug have?

NGK 91064 has an M10 - 1.0 thread, a 19.0 mm (0.750 in) thread reach, a 5/8 in (16 mm) hex and a 0.9 mm (.036 in) gap.

What is the center electrode on this NGK Laser Iridium spark plug made of?

The center electrode of NGK 91064 is an iridium alloy, which is 6x the density of platinum. The ground electrode is platinum, in a Square Platinum Electrode (SPE) shape.

Is NGK 91064 the same plug as SIMR8A9?

Yes. SIMR8A9 is NGK's other part number for this plug, and 31916-MEH-003 is also listed as an interchange number.

What do the copper core and plating on NGK 91064 do?

The 98% pure copper core helps dissipate heat and carry current. The trivalent metal plating gives anti-corrosion and anti-seizing properties for installation and removal.