Iridium IX Spark Plug (BPR6EIX)
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Iridium IX Spark Plug (BPR6EIX) Iridium IX Spark Plug (BPR6EIX)
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NGK Iridium IX Spark Plug (BPR6EIX)

Part No. 6637 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:0.032 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:13/16
Manufacturer Heat Range:6
Reach:19 mm
Seat Type:Gasket
Shorty Spark Plug:No
Thread Diameter:14 mm
Tip Configuration:Loose
Type:Iridium IX
Wrench Diameter:13/16 in


by PowerReviews
NGKIridium IX Spark Plug (BPR6EIX)

(based on 1 review)

Ratings Distribution

  • 5 Stars



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  • 1 Stars



Reviewed by 1 customer

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Iridium Replacement for Small Engines


from NJ

About Me Auto Enthusiast, Casual Driver, Mechanic

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  • Durable
  • Easy To Install
  • Improves Engine Efficiency
  • Increases Power


    Best Uses

    • Replacement

    Comments about NGK Iridium IX Spark Plug (BPR6EIX):

    I read about using Iridium spark plugs to replace the standard nickel plugs in small engines to improve the efficiency. I installed this plug in a Honda GX200 powered pressure washer and a Generac GP6500 generator powered by a Honda GX390 clone. The two engines ran good before the plug change and now seem to run a little better. They both start during the first pull of the starting rope and the exhaust sounds a little deeper. I don't have long term run info yet but will try to update this review with me findings.

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    Do you have questions about this product?


    Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

    1 Question | 1 Answer
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    • Q:

      Is this the price for all four plugs or per plug
      Asked on 8/8/2012 by Kelvin from Columbus Oh

      1 answer



        This part NGK Iridium IX Spark Plug (BPR6EIX), Part No. 6637 is sold individually.
        For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.
        For any further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and our representatives would be more than happy to assist you.

        Answered on 8/8/2012 by Aaron from AAP
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