NGK NGK Standard Spark Plug 3478
NGK NGK Standard Spark Plug 3478

Spark Plug for 2023-2025 Sherco 250 Sef Factory & More - NGK 3478

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$12.99
MPN: 3478
Item Package Quantity: 1
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NGK NGK Standard Spark Plug P/N:3478
NGK NGK Standard Spark Plug P/N:3478
$12.99

NGK 3478 spark plug for the 2023-2025 Sherco 250 Sef Factory 249cc and other vehicles ignites the air-fuel mixture in the combustion chamber. It is one of the NGK spark plugs engineered for OE applications.

  • NGK Standard line plug with a nickel alloy center electrode for consistent performance
  • Trivalent metal plating that resists corrosion and seizing, which eases installation and removal
  • High-grade alumina silicate ceramic insulator for dielectric performance
  • Solid 98% pure copper core for heat dissipation, conductivity and ultra wide heat ranges
  • Cold-rolled threads that help prevent cross-threading and cylinder head damage
  • Triple gasket sealing that prevents combustion gas leakage

Quick facts

  • Part: NGK 3478 spark plug
  • Fits: 2023-2025 Sherco 250 Sef Factory 249cc and other vehicles
  • Condition: New

A worn plug can show up as hard starting, a rough idle or a misfire. A weak ignition coil, a dirty air filter or a fuel delivery problem can be behind the same symptoms, so find the cause before buying. This plug is recommended for vehicles with OE nickel alloy plugs, not for those with factory precious metal plugs.

Fits

The 2023-2025 Sherco 250 Sef Factory 249cc, the 2023-2025 Sherco 300 Sef Factory 304cc and the 2011-2016 Suzuki M109R Boulevard 1783cc take this plug, and so do many other vehicles. The 2023-2025 Sherco 250 Sef Factory 249cc takes one; the number per engine varies on other vehicles.

Specifications

Fit and size

  • Quantity: varies by vehicle
  • Thread size: M10 - 1.0
  • NGK part number: CR8EK

Build and materials

  • Center electrode: nickel alloy
  • Core: solid 98% pure copper
  • Insulator: alumina silicate ceramic
  • Plating: trivalent metal
  • Condition: New

Interchange: CR8EK

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

4158, U24ETR, 59039093000, 92070-1158, 92070-1265, 3478, CR8EK, 09482-00412

Frequently Asked Questions

Does the NGK 3478 spark plug fit the 2023-2025 Sherco 300 Sef Factory 304cc?

Yes. NGK 3478 is listed for the 2023-2025 Sherco 300 Sef Factory 304cc, which takes one plug. For a vehicle not named here, check the Buyer's Guide tab.

Will this plug work in the 2011-2016 Suzuki M109R Boulevard 1783cc?

Yes. This NGK plug is listed for the 2011-2016 Suzuki M109R Boulevard 1783cc. The number of plugs that engine uses changes by model year, so buy the quantity it needs.

What is the center electrode of the NGK 3478 made of?

NGK 3478 has a nickel alloy center electrode and a solid 98% pure copper core. Its thread size is M10 - 1.0.

Can a worn NGK 3478 plug cause hard starting or a misfire?

Yes, a worn plug can lead to hard starting, a rough idle or a misfire. With the engine off and cool, you can look at the electrode for wear.

Is the CR8EK I find under NGK R spark plugs the same plug as the NGK 3478?

Yes. NGK lists this plug under both 3478 and CR8EK, so you can search for either number.

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