NGK 6213 spark plug for the 2009-2020 Honda CRF450R 449cc and other vehicles is one of the NGK spark plugs that ignite the air-fuel mixture in the cylinder. Its iridium center electrode suits modern high-efficiency engines.
- NGK Laser Iridium High Ignitability line
- Iridium alloy center electrode with 6x the density of platinum and a very high melting point
- Square platinum ground electrode (SPE) 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 6213 spark plug
- Fits: 2009-2020 Honda CRF450R 449cc and other vehicles
- Condition: New
A worn plug can show up as hard starting, a misfire or rough running. Before you replace the plug, rule out fuel delivery, a dirty air filter and the ignition coil or wiring, because problems there can look like a bad plug.
Fits
The vehicles it fits include the 2009-2020 Honda CRF450R 449cc, the 2017-2020 Honda CRF450RX 449cc and the 2019-2020 Honda CRF450L 449cc. If your bike is not named here, look up your own model and year in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Thread size: M10 - 1.0
Build and materials
- Center electrode: iridium alloy
- Ground electrode: Square Platinum Electrode (SPE)
- Core: 98% pure copper
- Insulator: high-grade pure alumina ceramic
- Plating: trivalent metal
- NGK service number: SILMAR9A9S
- Condition: New
In the box
One spark plug. The 2009-2020 Honda CRF450R 449cc needs a single plug, so one listing covers it.
Interchange: 31909-MEN-A31
SILMAR9A9S
This part cross-references / interchanges with the following part numbers:
31909-MEN-A31, 31909MENA31, 6213, SILMAR9A9S
Frequently Asked Questions
Is this the CRF450R spark plug for the 2009-2020 Honda CRF450R 449cc?
Yes. NGK 6213 is listed for the 2009-2020 Honda CRF450R 449cc, and that bike takes one plug.
Does the NGK 6213 plug fit the 2017-2020 Honda CRF450RX 449cc?
Yes. The 2017-2020 Honda CRF450RX 449cc is on the fitment list for this plug, and it takes one.
What are the electrodes made of on these NGK iridium spark plugs?
The NGK 6213 has an iridium alloy center electrode and a platinum ground electrode in a Square Platinum Electrode (SPE) shape.
Why does this spark plug have trivalent metal plating?
The plating gives the plug anti-corrosion and anti-seizing properties, which makes it easier to install and remove.
Is SILMAR9A9S the same plug as the NGK 6213?
Yes. SILMAR9A9S is the NGK service number for this plug, and 6213 is its stock number.
