AutoliteSparkPlugs.com is part of the SparkPlugs.com family, an authorized Autolite dealer.

  • 888-800-9629
  • triangle with equal sides Live Customer Service * Tech Support MON-FRI 8AM-NOON - 1-5PM PST
Picture of Autolite AR3910X Racing Plug
Picture of Autolite AR3910X Racing Plug
Picture of Autolite AR3910X Racing Plug
Picture of Autolite AR3910X Racing Plug

Autolite AR3910X Racing Plug

SKU #AR3910X
ITEM #AUTAR3910X
BRAND AUTOLITE
Compare Compare Now
  • Solid Terminal
  • Racing Plug

2225 in stock

Order by 12pm PST M-F for same day shipping

$7.74 USD

Delayed Shipping

The quantity you are purchasing

This updated lead time is based on the quantity you have selected.

PRICE BREAKS - The more you buy, the more you save

Quantity Price (Each)
1 - 39 $7.74
40 + $6.19
  • Description

    Autolite racing plugs are specially designed for extreme conditions and demanding applications. Cut-back ground electrode exposes spark for quicker acceleration. Nickel plated shell prevents corrosion.

  • Product Specifications
    • Shell
    • Thread Diameter14mm
    • Thread Pitch1.25mm
    • Seat TypeGasket
    • Reach19mm (3/4")
    • Hex Size5/8" (16mm)
    • Terminal TypeSolid
    • Gap.031" (0.8mm)
    • Center Electrode
    • MaterialNickel
    • TypeStandard
    • ProjectionProjected
    • Ground Electrode
    • MaterialNickel
    • TypeSlit Type
    • Quantity1
    • Specifications
    • ResistorNo
    • Heat Range3
    • Torque SpecsCast Iron: 26-29 lb. ft. Aluminum: 15-22 lb. ft.
    • Part Information
    • BrandAutolite
  • Fitment

    Verify Fitment

    Automotive

    Sorry, no automotive applications are associated with this part.

    Powersports

    Sorry, no powersports applications are associated with this part.

    Non-Automotive

    Sorry, no non-automotive applications are associated with this part.