• Screamin’ Eagle Performance Spark Plugs

    Part Number 31600106





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    Screamin’ Eagle® Performance Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The “V” trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances startups and ignitability.

    • For Standard Compression Applications
    • Features Ribbed Core Technology (RCT) that provides resistance to fouling
    • Designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for modified engines including performance carburetors, high-flow air cleaners, camshafts, exhaust systems and ignition systems in conjunction with stock compression ratios
    • Unique style with Screamin’ Eagle® logo
    • Sold in pairs


    • Sold in Unit

    • In The Box

      2 spark plugs


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    Fits ’99-'17 Twin Cam-equipped models, and ’86-later Evolution Sportster® 883, 1100 and 1200 models.

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      • These Screamin' Eagle® products are 50-state street-legal for sale and use on all vehicles, including those that are pollution controlled. Complies with the requirements of 40 CFR Part 86, subparts E and F.


      Performance Standard Compression Spark Plugs is rated 5.0 out of 5 by 1.
      Rated 5 out of 5 by from Great spark plug Better throttle response smoother idle does everything I expected it to do very happy
      Date published: 2017-07-09
      • y_2018, m_2, d_26, h_20
      • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
      • cp_1, bvpage1
      • co_hasreviews, tv_0, tr_1
      • loc_en_US, sid_PA-18-31600106, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
      • clientName_harleydavidson

      Q & A

      Once again, the gap?

      I want to double check the gap on my new plugs just to make sure they're where it should be before changing out my plugs along with my new 10mm Screaming Eagle plug wires.
      Asked by: irnhd
      Hi Irnhd, Please consult with your local Harley-Davidson dealer for assistance. Thanks for the question!
      Answered by: RowdyGrl79
      Date published: 2017-03-08

      spark plug gap

      Do the spark plugs need to be gapped if so what is the gap?
      Asked by: greekgod71
      You should check the gap and adjust it if needed before installation. Your Owners manual will list the proper gap for your spark plugs in the specifications. Owners manuals are available for download from, choose Owners from the home page (top right) then Owners Manuals.
      Answered by: shanneba
      Date published: 2017-12-30
      • y_2018, m_2, d_26, h_20CST
      • bvseo_bulk, prod_bvqa, vn_bulk_2.0.7
      • cp_1, bvpage1
      • co_hasquestionsanswers, tq_2
      • loc_en_US, sid_PA-18-31600106, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
      • clientName_harleydavidson

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