Iridium IX Spark Plug (DPR9EIX-9)
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Iridium IX Spark Plug (DPR9EIX-9)
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NGK Iridium IX Spark Plug (DPR9EIX-9)

Part No. 5545 Warranty Details  

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Laser-welded iridium center electrode is resistant to heat, corrosion and electrical wear. The tapered ground electrode minimizes quenching. Provides outstanding acceleration, high fuel efficiency and durability.

Product Features:
  • 0.6 mm iridium-tip center electrode provides durability and a high melting point
  • Taper-cut ground electrode shape provides improved flame reproduction
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Center Electrode Core Material:Copper Core
Center Electrode Tip Material:Iridium
Electrode Core Material:Iridium
Electrode Tip Material:Iridium
Gap Size:0.036 in
Ground Configuration:Standard
Ground Electrode Core Material:Nickel Core
Ground Electrode Quantity:1
Ground Electrode Tip Design:Taper Cut
Ground Strap Quantity:1
Hex Size:18
Manufacturer Heat Range:9
Reach:19 mm
Seat Type:Gasket
Shorty Spark Plug:No
Thread Diameter:12 mm
Tip Configuration:Stud
Type:Iridium IX
Wrench Diameter:18.00 mm


by PowerReviews
NGKIridium IX Spark Plug (DPR9EIX-9)

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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Best Plug for Buell Blast


from Somewhere in USA

About Me Auto Enthusiast

Verified Buyer


  • Improves Engine Efficiency
  • Increases Power


  • Difficult To Install

Best Uses

  • Everyday Driving
  • Replacement
  • Restoration

Comments about NGK Iridium IX Spark Plug (DPR9EIX-9):

Bought as replacement for Buell Blast. Runs cooler and gets better mpg!

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