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Iridium Spark Plugs Iridium Spark Plugs Iridium Spark Plugs
Drag Specialties

Iridium Spark Plugs

Part #21030359

$33.87

Options

In stock

  • Iridium electrode is smaller than a standard electrode; requires less voltage
  • Hotter spark and extended spark plug service life compared to conventional plugs
  • Has the distinctive black ceramic with red lettering and gold-colored corrosion-protected coating on the metal shell
  • Exceeds OEM specifications for plug service life

WARNING: — www.P65Warnings.ca.gov

Details

Center Electrode Projection
Non-Projected
Style
Iridium
Type
Resistor
Units
Pair
Heat Range
9
Electrode Tip Material
Iridium
Ground Electrode Shape
Standard
Terminal Configuration
Removable Nut
Ground Electrode Configuration
Single
Hex Size
16 mm
Model
CR9EIX
Riding Style
Street
Thread Reach
11.1 mm
Center Electrode Type
Necked Down
Product Name
Spark Plug

Fitment

Harley-Davidson

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FLHXL Street Glide Limited
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FLHXS Street Glide Special
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FLHXSE CVO Street Glide
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FLHXSTSE CVO Street Glide ST
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FLHXU Street Glide Ultra
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FLTRT Road Glide 3
2024–2026
FLTRU Road Glide Ultra
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FLTRX Road Glide
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FLTRXSE CVO Road Glide
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FLTRXSTSE CVO Road Glide ST
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FXBRS Breakout 114
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2018–2021, 2023
FXLR Low Rider 107
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FXLRS Low Rider S 117
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FXLRST Low Rider ST 117
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2025
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2015–2020
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