Screamin’ Eagle Performance Spark Plugs

Part Number 31600105




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 High Compression Applications
  • Feature 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 high performance applications involving modifications in high-flow air cleaners, camshafts, exhaust, performance heads, ignition components, higher compression ratios above OE configurations or engines specific for racing applications
  • Unique style with Screamin’ Eagle® logo
  • Sold in pairs

Fits '99-'17 Twin Cam-equipped models. '86-later XL and XR and Evolution® 1340 models equipped with Screamin' Eagle® Performance Cylinder Heads.

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  • Model
  • 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.
  • Sold in Unit

  • In The Box

    2 spark plugs
Performance High Compression Spark Plugs is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Nice plug indeed! I installed a set of these plugs for my wife's Dyna Switchback. I love the idea of the high performance platinum especially for an air cooled machine which can produce very high heat . Harley Davidson say's to replace the plugs every two years and why not give your bike the best plug out there.
Date published: 2017-02-17
Rated 5 out of 5 by from Good part. Very good product, solve problems of ignition, produced by heat.
Date published: 2016-12-25
  • y_2018, m_2, d_26, h_20
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  • clientName_harleydavidson

different part numbers?

why does the SE high compression spark plugs (pt no : 31600105) have a different part number (on the spark plugs themselves, pt no : 31600103) as oppose to one specified on the box and the website?
Asked by: HotRod97
Hey HotRod97, Thanks for your question. Part number 31600103 is for the individual spark plug and part number 31600105 is the "kit" part number. Many times the individual components in a kit will have their own part numbers and they roll up into the "kit" part number. You're all good. Hope that helps!
Answered by: Wisco832
Date published: 2017-10-09

will I see a bump

I installed the SE big bore stage 3 110 kit on my 2014 street glide. will these plugs really make a difference?
Asked by: Bulldog182
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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.