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NGK 5666 Standard Copper Core Spark Plug

(Honda CRF150R 2007-09, 2012-14, 2016-17, 2019, VF750C Magna 1994-2003, CHF50 Metropolitan 2002-03, 2006-09, ST1100 1991-2002 + 18 more models)

Manufacturer

Part Number

5666
Sale Price

$9.44

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The NGK 5666 standard spark plug delivers the reliable performance that makes NGK the preferred choice of automotive, motorcycle, and marine engine manufacturers worldwide. Featuring a solid copper core and precision-engineered electrode design, this plug ensures quick starts, optimal engine performance, and extended service life.

Key Features:

  • Solid copper core for superior heat dissipation and conductivity
  • Triple gasket sealing process eliminates combustion gas leakage
  • 99% pure alumina silicate ceramic insulator for excellent dielectric strength
  • Corrugated ribs prevent flashover and misfires
  • Cold-rolled threads protect cylinder head during installation
  • Trivalent plating with silver chromate and zinc for maximum corrosion resistance

NGK's proven design and manufacturing excellence make this standard spark plug an ideal OEM replacement for a wide range of engines. The copper core construction provides excellent thermal conductivity to prevent overheating and pre-ignition, while the precision-machined electrodes ensure consistent spark energy and fuel efficiency.

Products specifications

Fits

Honda CRF150R 2007-09, 2012-14, 2016-17, 2019, VF750C Magna 1994-2003, CHF50 Metropolitan 2002-03, 2006-09, ST1100 1991-2002, VF750CD Magna Deluxe 1995-96, CHF50P Metropolitan II 2002-03, CRF150R Expert 2007-09, 2012-17, 2019 + 15 more models

Stock Number

5666

Part Number

CR8EH-9

Manufacturer Heat Range

8

Ground Electrode Core Material

Nickel

Seat Type

FLAT

Center Electrode Tip Material

Nickel

Ground Electrode Quantity

1

Electrical Terminal Type

Stud

Hex Size

5/8

Ground Configuration

Standard

Pre-Gap Size

.036

Center Electrode Core Material

Copper

Ground Electrode Tip Design

Standard

Reach

.75

Insulator Height

50.00

Resistance

5000

Thread Diameter

10.00

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