Autolite Spark Plug- 1957-1978 Sportster XL - Manufacturer Part #4316 – Lowbrow Customs
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      Why buy from Lowbrow?

      • Free Shipping On US Orders $99 & up*

      • Everything In Stock & Ships Fast!

      • Fitment Guaranteed

      • 90 Day Money Back Guarantee

      • No Restock Fees, Ever!

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      LOWBROW CUSTOMS USA MANUFACTURING SCHOLARSHIPS

      Here at Lowbrow Customs we believe strongly in supporting US manufacturing. We have created multiple annual scholarships, one with the Lincoln Electric Welding School and another with Tri-C (Cuyahoga Community College) for students in financial need who are pursuing workforce training. From TIG welding to machining, this is the backbone of manufacturing in the United States. Want to learn more?

      Want to learn more? Click here.

      Customer Reviews
      5.0 Based on 12 Reviews
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      Your input is very much appreciated. Share it with your friends so they can enjoy it too!

      Filter Reviews:
      • shipping
      • plug caps
      • electrode tips
      • aesthetic
      • ironhead engine
      • Lowbrow
      • prices
      JH
      05/11/2021
      Joe H.
      New Zealand New Zealand
      I recommend this product
      Plug review

      The plugs are great. Have a good aesthetic and match the ironhead engine well. However, the electrode tips don't seem to be removable to fit my NGK plug caps. Lowbrow was awesome, easy to deal with, super quick shipping and great prices to boot!

      CJ
      04/18/2020
      christopher j.
      United States United States
      I recommend this product
      Spark plugs

      Work great fast shipping as usual

      DT
      02/06/2020
      Dan T.
      US
      Ironhead spark plugs

      Work great.

      MS
      12/09/2019
      Marcus S.
      US
      Need a spark

      Wright size and good price

      NB
      11/28/2019
      Nghia B.
      US
      buying here from now on

      went to the Harley dealership to get plugs for my ironhead, bought a few to have a few as spares. When i got home to install them, turned out they gave me the wrong plugs and they costed 3 times as much fml. Shop Low Brow !

      ST
      11/14/2019
      Shawn T.
      US
      Always good

      Fast shipping everytime always helpful whenever there’s an issue!!

      GK
      11/05/2019
      George K.
      US
      If you own an ironhead

      If you own an ironhead you should keep a pile of these in your bag lol

      G
      08/04/2019
      Guest
      US
      Great spark plug

      Worked out great

      WR
      04/28/2019
      Willie R.
      US
      Awesome project

      I ran around to the big box automarts looking for plugs and wasted my time. Ordered from Lowebrow and got just what I needed. Fast delivery

      RH
      12/18/2018
      Ryan H.
      US
      Works

      Great spark, starts my bike fine.

      ZW
      04/24/2018
      Zach W.
      US
      LEGIT ****

      Super impressed with the products and service!!!

      G
      10/31/2017
      Guest
      US
      plugs

      perfect fit & hot spark.