NGK 3689 TR6IX IX Iridium Spark Plug

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Regular Price: $14.00 Our Price: $8.49
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NGK 3689 TR6IX IX Iridium Spark Plug.

NGK's IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast.

Fits American Challenger, Berkeley, Flagship, Hardin Marine, Mercury, OMC and Volvo Penta inboard engines and Boston Whaler jet boat engines.

Thread Size: 14mm
Thread Pitch: 1.25mm
Seat Type: Tapered
Resistor: Yes
Resistor Value: 5K Ohm
Reach: 18mm (.709")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .039" (1.0mm)

Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Projected

Ground Electrode
Material: Nickel
Type: Standrad
Shape: Taper Cut
Quantity: 1

Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.
Brand: NGK
Heat Range: 6
Longevity: 50k Miles
More Information
Brand NGK Spark Plugs
Cross Reference MERCURY MARINE
  • 33-884019
  • 33-884019001
  • 33-8M2018369
  • UPC 087295136898
    Vendor Item # 3689
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