Spark Plugs & Wires
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V-Twin - 16-0825 - Spark Plug Wrench Tool
Motorshop
$9.82V-Twin - 16-0825 - Spark Plug Wrench ToolDescriptionSpark plug wrench, 14mm Fits:All modelsAdditional Information OEM No.94421-78 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages1284$9.82 -
V-Twin - 16-0603 - Spark Plug Hole Thread Chaser Tool
Lisle Corp.
$23.45V-Twin - 16-0603 - Spark Plug Hole Thread Chaser ToolDescriptionSpark plug hole thread chaser tool Fits:All modelsAdditional Information UOM1 - EA MeasurementsAdditional InformationSmaller Thread Size: 14mmLarger Thread Size: 18mm ManufacturerLisle...$23.45 -
V-Twin - 16-0514 - Spark Plug Wire Tool
Motorshop
$53.23V-Twin - 16-0514 - Spark Plug Wire ToolDescriptionSpark plug wire tool strips 7 and 8mm ignition wires, and crimps spark plug and distributor terminals. Fits:All modelsAdditional Information UOM1 - EA ManufacturerMotorshop OriginUSA 2025 Catalog...$53.23 -
V-Twin - 16-0371 - 18mm Spark Plug Wrench Set
Motorshop
$48.05V-Twin - 16-0371 - 18mm Spark Plug Wrench SetDescriptionSet includes wrench for 18mm early style air cooled spark plugs and 18mm spark plug socket as originally supplied in the army tool kits.For use with spark plugs with 1-1/8" hex, and later style...$48.05 -
V-Twin - 16-0202 - Plug Socket Tool Set
Motorshop
$19.86V-Twin - 16-0202 - Plug Socket Tool SetDescriptionPlug socket tool set for 12mm and 14mm plugs. Fits:All modelsAdditional Information UOM1 - SET ManufacturerMotorshop OriginImported 2025 Catalog Pages1284$19.86 -
Drag Specialties - DS305009 - Head Bolt/Spark Plug Covers - Chrome - XL
Drag Specialties
$73.39Drag Specialties - DS305009 - Head Bolt/Spark Plug Covers - Chrome - XLFeaturesA step beyond individual headbolt covers and spark plug coversDrag and Billy Westbrook have teamed up to put an end to having to buy individual parts; our die-cast aluminum...$73.39 -
Drag Specialties - 21040408 - Spark Plug Wires - '18-'23 Softail
Drag Specialties
$68.29Drag Specialties - 21040408 - Spark Plug Wires - '18-'23 SoftailFeaturesConstructed with silicone throughout the jacket, insulation and core to deliver high-temperature resistanceRated at SAE Class E J2031 with a continuous operating temperature of...$68.29 -
Drag Specialties - 21040220 - Spark Plug Wires - Square Coil
Drag Specialties
$19.33Drag Specialties - 21040220 - Spark Plug Wires - Square CoilFeaturesReplacement spark plug wiresSpecsUnitsSetWire Length Imperial21-1/2''Wire Diameter8.8 mmTypeSpark PlugProduct NameWireWire Length Imperial12-1/2''Color/FinishBlackRiding...$19.33 -
Drag Specialties - 21040144 - 8.8 mm Plug Wires - '97-'98 FL
Drag Specialties
$29.53Drag Specialties - 21040144 - 8.8 mm Plug Wires - '97-'98 FLFeaturesConstructed with silicone throughout the jacket, insulation and core to deliver high-temperature resistanceRated at SAE Class E J2031 with a continuous operating temperature of 450°...$29.53 -
Drag Specialties - 21040142 - 8.8 mm Plug Wires - '82-'99 FXR
Drag Specialties
$26.47Drag Specialties - 21040142 - 8.8 mm Plug Wires - '82-'99 FXRFeaturesConstructed with silicone throughout the jacket, insulation and core to deliver high-temperature resistanceRated at SAE Class E J2031 with a continuous operating temperature of 450°...$26.47 -
Drag Specialties - 21040137 - Plug Wires - '71-E'78 XL
Drag Specialties
$27.49Drag Specialties - 21040137 - Plug Wires - '71-E'78 XLFeaturesRated at SAE Class E J2031Constructed with silicone throughout the jacket to deliver high-temperature resistanceContinuous operating temperature of 450°FCopper core wires should be used on...$27.49 -
Drag Specialties - 21040136 - Plug Wires - '58-'69 XL with Magneto
Drag Specialties
$30.55Drag Specialties - 21040136 - Plug Wires - '58-'69 XL with MagnetoFeaturesRated at SAE Class E J2031Constructed with silicone throughout the jacket to deliver high-temperature resistanceContinuous operating temperature of 450°FCopper core wires should be...$30.55 -
Sumax - 76281 - Spark Plug Wire - 90° - Red - Universal
Sumax
$35.95Sumax - 76281 - Spark Plug Wire - 90 - Red - UniversalFeaturesDesigner plug wire sets come in distinctive, highly visible colorsHave the plug boots and terminals already installedBoots and wires are made from extra-high-temperature silicone, which gives...$35.95 -
Sumax - 76681 - Spark Plug Wire - 90° - Blue - Universal
Sumax
$35.95Sumax - 76681 - Spark Plug Wire - 90 - Blue - UniversalFeaturesDesigner plug wire sets come in distinctive, highly visible colorsHave the plug boots and terminals already installedBoots and wires are made from extra-high-temperature silicone, which...$35.95 -
Parts Unlimited - Spark Plug Cap - 120 Degree - Red
Parts Unlimited
$10.15Parts Unlimited - Spark Plug Cap - 120 Degree - RedFeaturesFit 10 mm, 12 mm and 14 mm plugs with terminal nutsAccept 7 mm or 8 mm plug wiresFor terminal nut style plugsNot for use on fuel-injected models.SpecsCompatible Terminal ConfigurationThreaded...$10.15 -
Parts Unlimited - Spark Plug Cap - 120 Degree - Blue
Parts Unlimited
$10.15Parts Unlimited - Spark Plug Cap - 120 Degree - BlueFeaturesFit 10 mm, 12 mm and 14 mm plugs with terminal nutsAccept 7 mm or 8 mm plug wiresFor terminal nut style plugsNot for use on fuel-injected models.SpecsColor/FinishBlueCompatible Spark Plug Size12...$10.15 -
Parts Unlimited - Spark Plug Cap - Straight - Blue
Parts Unlimited
$10.15Parts Unlimited - Spark Plug Cap - Straight - BlueFeaturesFit 10 mm, 12 mm and 14 mm plugs with terminal nutsAccept 7 mm or 8 mm plug wiresFor terminal nut style plugsNot for use on fuel-injected models.SpecsRiding StyleStreetUnitsEachConnector...$10.15 -
Parts Unlimited - Spark Plug Cap - 90 Degree - Red
Parts Unlimited
$10.15Parts Unlimited - Spark Plug Cap - 90 Degree - RedFeaturesFit 10 mm, 12 mm and 14 mm plugs with terminal nutsAccept 7 mm or 8 mm plug wiresFor terminal nut style plugsNot for use on fuel-injected models.SpecsCompatible Terminal ConfigurationThreaded...$10.15 -
Parts Unlimited - Spark Plug Cap - Straight - Red
Parts Unlimited
$10.15Parts Unlimited - Spark Plug Cap - Straight - RedFeaturesFit 10 mm, 12 mm and 14 mm plugs with terminal nutsAccept 7 mm or 8 mm plug wiresFor terminal nut style plugsNot for use on fuel-injected models.SpecsConnector AngleStraightCompatible Spark Plug...$10.15 -
Parts Unlimited - Spark Plug Cap - 90 Degree - Blue
Parts Unlimited
$10.15Parts Unlimited - Spark Plug Cap - 90 Degree - BlueFeaturesFit 10 mm, 12 mm and 14 mm plugs with terminal nutsAccept 7 mm or 8 mm plug wiresFor terminal nut style plugsNot for use on fuel-injected models.SpecsColor/FinishBlueCompatible Spark Plug Size10...$10.15 -
Motion Pro - 08-0579 - Gap Tool - Spark Plug
Motion Pro
$20.49Motion Pro - 08-0579 - Gap Tool - Spark PlugFeaturesIdeal tool for checking and setting spark plug gap on almost any spark plugIncludes 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 and 1.0 mm gap gaugesIncludes handy bottle opener on opposite endLaser etched...$20.49 -
Ngk Spark Plugs - 97637 - Iridium IX Spark Plug - DCPR7EIX
NGK Spark Plugs
$14.95Ngk Spark Plugs - 97637 - Iridium IX Spark Plug - DCPR7EIXFeaturesPlatformThe ultimate in the evolution of spark plug technology and performance from the industry leaderThe iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the...$14.95 -
Lang Tools - 712A - Spark Plug Gap Tool
Lang Tools
$3.95Lang Tools - 712A - Spark Plug Gap ToolFeaturesSpark plug tool measures spark plug gap in graduated ramp sequenceSizes: SAE .020" - .100"; Metric .60 mm - 2.40 mmUniversal spark plug gaugeMade in the U.S.A.SpecsRiding StyleStreetStyleRampTypeSpark...$3.95 -
Lang Tools - 1013A - Rethreader Spark Plug
Lang Tools
$22.95Lang Tools - 1013A - Rethreader Spark PlugFeaturesRequires the use of a 5/8" spark plug socket, or the female square requires the use of a male 3/8" square driveUsed to clean up dirty or damaged spark plug threads on Twin Cam, V-Rod and some Sportster...$22.95 -
K&S Technologies - 10-1121H - Spark Plug Cap - 90° - 14 mm
K&S Technologies
$7.95K&S Technologies - 10-1121H - Spark Plug Cap - 90 - 14 mmFeaturesIncludes resistor cover and both end rubber capsSpecsCompatible Terminal ConfigurationTerminal NutConnector Angle90°Color/FinishBlackRiding StyleStreetUnitsEachCompatible Spark Plug Size14...$7.95 -
K&S Technologies - 10-1221H - Spark Plug Cap - 90° - 10/12 mm
K&S Technologies
$7.95K&S Technologies - 10-1221H - Spark Plug Cap - 90 - 10/12 mmFeaturesIncludes resistor cover and both end rubber capsSpecsConnector Angle90°Color/FinishBlackCompatible Spark Plug Size10 mmRiding StyleStreetCompatible Terminal ConfigurationTerminal...$7.95 -
K&S Technologies - 10-3121MAD - Spark Plug Cover - T-Type - 14 mm
K&S Technologies
$11.95K&S Technologies - 10-3121MAD - Spark Plug Cover - T-Type - 14 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsCompatible Terminal ConfigurationTerminal NutUnitsEachProduct NameCapTypeSpark PlugCompatible Spark Plug...$11.95 -
K&S Technologies - 10-4221MH - Spark Plug Cap - 120° - 10/12 mm
K&S Technologies
$7.95K&S Technologies - 10-4221MH - Spark Plug Cap - 120 - 10/12 mmFeaturesIncludes resistor cover and both end rubber capsSpecsCompatible Spark Plug Size10 mmCompatible Terminal ConfigurationTerminal NutProduct NameCapTypeSpark PlugRiding...$7.95 -
K&S Technologies - 10-2121 - Spark Plug Cap - Straight - 14 mm
K&S Technologies
$6.95K&S Technologies - 10-2121 - Spark Plug Cap - Straight - 14 mmFeaturesIncludes resistor cover and both end rubber capsSpecsProduct NameCapCompatible Terminal ConfigurationTerminal NutTypeSpark PlugColor/FinishBlackCompatible Spark Plug Size14 mmConnector...$6.95 -
K&S Technologies - 10-6122 - Spark Plug Cap - 14 mm
K&S Technologies
$7.95K&S Technologies - 10-6122 - Spark Plug Cap - 14 mmFeaturesIncludes resistor cover and both end rubber capsSpecsConnector Angle120°UnitsEachColor/FinishBlackCompatible Spark Plug Size14 mmProduct NameCapTypeSpark PlugCompatible Terminal...$7.95 -
K&S Technologies - 10-1121Z - Spark Plug Cap - 90° - 14 mm
K&S Technologies
$7.95K&S Technologies - 10-1121Z - Spark Plug Cap - 90 - 14 mmFeaturesIncludes resistor cover and both end rubber capsSpecsProduct NameCapTypeSpark PlugCompatible Terminal ConfigurationTerminal NutConnector Angle90°Color/FinishBlackRiding...$7.95 -
K&S Technologies - 10-4222MH - Spark Plug Cap - 10/12 mm
K&S Technologies
$7.95K&S Technologies - 10-4222MH - Spark Plug Cap - 10/12 mmFeaturesIncludes resistor cover and both end rubber capsSpecsProduct NameCapUnitsEachCompatible Spark Plug Size12 mmConnector Angle120°Compatible Terminal ConfigurationTerminal StudTypeSpark...$7.95 -
K&S Technologies - 10-1121MH - Spark Plug Cap - 90° - 14 mm
K&S Technologies
$7.95K&S Technologies - 10-1121MH - Spark Plug Cap - 90 - 14 mmFeaturesIncludes resistor cover and both end rubber capsSpecsColor/FinishBlackRiding StyleStreetCompatible Spark Plug Size14 mmConnector Angle90°Product NameCapTypeSpark PlugCompatible Terminal...$7.95 -
K&S Technologies - 10-2122 - Spark Plug Cover - Resistor - 14 mm
K&S Technologies
$6.95K&S Technologies - 10-2122 - Spark Plug Cover - Resistor - 14 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsColor/FinishBlackRiding StyleAdventure Touring / Dual-SportRiding StyleSnowRiding StyleStreetRiding...$6.95 -
K&S Technologies - 10-1122 - Spark Plug Cover - Resistor - 14 mm
K&S Technologies
$6.95K&S Technologies - 10-1122 - Spark Plug Cover - Resistor - 14 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsConnector Angle90°Riding StyleUTVProduct NameCapTypeSpark PlugConnector AngleElbowUnitsEachCompatible Spark...$6.95 -
K&S Technologies - 10-5222 - Spark Plug Cover - Resistor - 10/12 mm
K&S Technologies
$6.95K&S Technologies - 10-5222 - Spark Plug Cover - Resistor - 10/12 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsCompatible Terminal ConfigurationTerminal StudRiding StyleUTVColor/FinishBlackCompatible Spark Plug Size10...$6.95 -
K&S Technologies - 10-5122 - Spark Plug Cover - Resistor - 14 mm
K&S Technologies
$6.95K&S Technologies - 10-5122 - Spark Plug Cover - Resistor - 14 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsMaterialPlasticProduct NameCapTypeSpark PlugRiding StyleOff-RoadColor/FinishBlackCompatible Spark Plug Size14...$6.95 -
K&S Technologies - 10-4222 - Spark Plug Cover - Resistor - 10/12 mm
K&S Technologies
$6.95K&S Technologies - 10-4222 - Spark Plug Cover - Resistor - 10/12 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsConnector Angle120°Connector AngleElbowMaterialPlasticRiding StyleOff-RoadColor/FinishBlackRiding...$6.95 -
K&S Technologies - 10-4122 - Spark Plug Cover - Resistor - 14 mm
K&S Technologies
$6.95K&S Technologies - 10-4122 - Spark Plug Cover - Resistor - 14 mmFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsConnector AngleElbowUnitsEachFeaturesWaterproofRiding StyleATVRiding StyleAdventure Touring / Dual-SportRiding...$6.95 -
K&S Technologies - 10-3121M - Spark Plug Cover - Resistor - 14 mm - Red
K&S Technologies
$7.95K&S Technologies - 10-3121M - Spark Plug Cover - Resistor - 14 mm - RedFeaturesReplacement spark plug capAdaptable thread size5 OhmWaterproof capSpecsRiding StyleSnowCompatible Spark Plug Size14 mmCompatible Terminal ConfigurationTerminal...$7.95
Harley Spark Plugs & Wires
Upgrade your ignition system with our premium selection of Harley spark plugs and Harley spark plug wires, engineered to meet or exceed OEM standards for Harley Davidson motorcycles. Choose from high-performance iridium and platinum Harley Davidson spark plugs designed for increased durability, cleaner combustion, and improved fuel efficiency.
Our Harley Davidson spark plug wires feature low-resistance construction for maximum conductivity and reliable spark delivery. Built with high-temp silicone insulation, these Harley spark plug wires provide excellent heat protection and superior EMI/RFI suppression to shield your bike’s electronics from interference. Plus, with custom lengths and color-matched options available, you can match performance with style.
Whether you're maintaining a stock setup or fine-tuning a custom build, our Harley spark plugs and Harley spark plug wires are tested to perform under tough riding conditions. Browse our full range of Harley Davidson Electrical & Wiring parts and give your motorcycle the spark it needs to perform its best. Shop now and ride with confidence!