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Screamin’ Eagle Performance Spark Plugs

$29.95
5.00
|
See 6 reviews
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.

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Description
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Showing 1-5 of 6
Reviews
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  • FEATURED REVIEW
    5/27/2024
    Very satisfied
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Quality
    Did Not Meet
    Exceeded
    I bought these about two years ago because every spring I had trouble getting mine started it would flood and foul all the plugs. I put a set of these in it and I’ve never had a problem starting it since I think it’s quicker I talked to my brother. He has an 05 fat boy I have a 2000 softail standard. I told him how I liked him. He put a side of them in his and he likes them too. Would buy again if I had to. I was never big on aftermarket stuff. That’s why I try to buy Genuine Harley if I can. read more.
    Tykechipper - Martinsburg, West Virginia
  • FEATURED REVIEW
    8/9/2022
    Simple Upgrade
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    I like these spark plugs and will buy them again when it comes time to replace them. They seemed to improve my mpgs by about 1-2mpg. Not a big deal but worth noting. Before I installed these in my bike I contacted Doc Harley from LCHD and for my Road King with the Twin Cam 103HO he said to gap them to the service manual spec 0.038-0.043 and use anti-sieze sparingly so thats what I did. read more.
    • User review image
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    M9130 - Nc Foothills - Motorcycle: 2014 FLHR Road King
  • FEATURED REVIEW
    4/14/2022
    Well built
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Runs cooler and seems to be adding a bit of performance
    Cheyenne - Commiefornia - Motorcycle: Dyna
  • FEATURED REVIEW
    9/28/2020
    VERY NICE!
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    I BOUGHT THESE WITH 10MM SPARK PLUG WIRES AFTER A PUT SLIP ON'S ON MY BREAKOUT. IT SHIFTS SO MUCH SMOOTHER. AND GAVE IT MORE OF A GROWL. REALLY ENJOYED THIS UP GRADE!! PLAN ON REPLACING WITH THESE EVERY YEAR.
    • User review image
    BALD HEADED JESUS FREAK - CRAWFORDSVILLE, IN - Motorcycle: Breakout
    • Had red/gold NGK type plugs when I bought the bike 2 years ago. Found factory boot wasn't holding properly it it. I bought same plugs and upped the wires to the 10mm and it brought the bike up to where it should be performing .Much better performance
      robot - Ontario Ca.
      10/11/2024
    • Thanks for taking the time to review brother! Looking forward to getting these. Keep looking up!
      Little Bro - Ohio
      11/10/2023
    • I think they make blinker fluid too should smooth out the shifting even more
      dave - 03109
      4/14/2022
    • I think they make blinker fluid too should smooth out the shifting even more
      dave - 03109
      4/14/2022
    • I bet the paint is shiner too!
      Spike - Arkansas
      7/12/2021
    • DGuy, if you have done all that Motor work these are not the spark Plugs, order the High Compression plugs.
      Buckethead - RGV
      7/1/2021
    • Bike shifts smoother after replacing spark plugs.. LOL yeah sure ok.
      JerryMCguire - Dallas, TX
      6/3/2021
    • I have a 2015 Road Glide Special with a Stage 4 103 to 103 engine. Are these Screamin Eagle plugs what I want? Also run 2 into 1 exhaust.
      DGuy - Lawrenceburg IN
      4/6/2021
  • FEATURED REVIEW
    5/31/2018
    Great addition ... low cost
    I added the Screaming Eagle plugs and 10mm wires .... wow! Low cost additions and immediate difference. Throttle response was good now it’s great. Feels like it revs easier and idles smoother. Next up .... Screaming Eagle cleaner and a re-map.
    HarleyEric883 - Clermont Florida - Motorcycle: 2016 Iron 883
    • What would you expect for $20? A stage four upgrade??
      TennesseeOne - Riceville, Tennessee
      1/18/2021
Showing 1-5 of 23
Q&A
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  • Question:
    3/5/2024
    So i have a 2015 fatboy, I have put a high flow air filter and aftermarket exhaust. It seems to run hot I have the original plugs. Will these help with the heat issue. Thanks Brian
    • Answer:
      Hi Brian. If you haven't tuned your bike after the changes you made I would go see your local dealer. You may need to have a download installed or have the bike tuned due to the changes causing it to run hot.
      hockeydad
      Helpful?
  • Question:
    12/3/2023
    I need to Know are they 12mm or 14mm so I can purchase indexing washers. they seem to not say, I THINK they are 12mm. am i wrong or right.
    Shawn - langley b.c. canada
  • Question:
    4/17/2023
    I have 2004 Sportster 1200 custom can I use these plugs and what should the gap be
    Sp12004750 - Mobile,Al
    • Answer:
      Hello Sp12004750, The Screamin’ Eagle Performance Spark Plugs-Part Number: 31600106 are sold In store only. Please call your local dealer for questions. Thanks
  • Question:
    7/19/2022
    These plugs come pre gapped to 0.035. For a 2014 Road King the service manual says to set the gap between 0.038-0.043. For my Road King should I gap these to the spec in the service manual or leave them at 0.035, the way they come?
    M9130 - Nc Foothills
    • Answer:
      M9130 The owners manual references an all STOCK motor, ignition, fuel and exhaust. Traditionally the box is correct about .035 but application may be different depending on the set-up (exhaust, cam, compression, etc). I would recommend speaking with your local dealer to see what best suits your engine set-up Thanks H9FXE read more.
  • Question:
    1/13/2022
    What is the actual difference between the high and standard compression plugs? Is one a higher heat range than the other?
    Buck Diablo - Socialist State of CA
    • Answer:
      Hello Buck, It has nothing to do with heat range, is has to do with tolerances. Gigglesthehelper
      Gigglesthehelper
      Helpful?

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Screamin’ Eagle Performance Spark Plugs