Spark Plugs & Wires
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V-Twin - 32-0057 - Spark Plug Adapter Sleeve Set
Volt Tech
$26.02V-Twin - 32-0057 - Spark Plug Adapter Sleeve SetDescriptionSpark plug adapter sleeve kit allows 14mm plugs to be used in earlier heads with 18mm spark plug threads.Sold in a quantity of 2. Fits:EL 1936-1940FL 1941-1947Additional Information UOM1 - SET ...$26.02 -
V-Twin - 2996-1 - Cadmium Plated Spark Plug Cable Wire Clip
Colony
$11.20V-Twin - 2996-1 - Cadmium Plated Spark Plug Cable Wire ClipDescriptionCadmium plated early style spark plug cable wire clip. Fits:EL 1936-1940Additional Information OEM No.4726-36 UOM1 - EA ManufacturerColony OriginUSA$11.20 -
V-Twin - 2960-1 - Parkerized Spark Plug Cable Wire Clip
Colony
$11.20V-Twin - 2960-1 - Parkerized Spark Plug Cable Wire ClipDescriptionParkerized early style spark plug cable wire clip. Fits:EL 1936-1940Additional Information OEM No.4726-36 UOM1 - EA ManufacturerColony OriginUSA$11.20 -
V-Twin - 16-1614 - 18mm Spark Plug Wrench Set
Motorshop
$27.98V-Twin - 16-1614 - 18mm Spark Plug Wrench SetDescriptionSet includes hex wrench tool and 18mm spark plug socket.For use with 1-5/32" OEM style spark plugs only. Order rivet set tool separately. Fits:G 1936-1947FL 1941-1947Additional Information UOM1 -...$27.98 -
V-Twin - 16-1387 - 18mm x 1-3/8 inch Hex Spark Plug Socket Parkerized
V-Twin
$29.75V-Twin - 16-1387 - 18mm x 1-3/8 inch Hex Spark Plug Socket ParkerizedDescription18mm x 1-3/8" hex spark plug socket for 7/8" thread plugs features a parkerized finish. Fits:VL 1930-1936J 1917-1926Additional Information UOM1 - EA ManufacturerV-Twin ...$29.75 -
V-Twin - 16-1383 - 18mm Spark Plug Tool Parkerized
Motorshop
$36.24V-Twin - 16-1383 - 18mm Spark Plug Tool ParkerizedDescriptionSpark plug tool features a parkerized finish and is for use with OE Harley 18mm plugs. Designed to fit within the slots in order to disassemble the plugs. Fits:G 1936-1948EL 1936-1947FL...$36.24 -
V-Twin - 16-1345 - Parkerized 18mm Spark Plug Socket Tool Set
Motorshop
$37.40V-Twin - 16-1345 - Parkerized 18mm Spark Plug Socket Tool SetDescriptionOriginal style parkerized spark plug socket set includes offset wrench which will fit 14mm and 18mm spark plugs. Fits:UL 1937-1948G 1936-1947W 1936-1947EL 1936-1947FL...$37.40 -
V-Twin - 16-1286 - Spark Plug Wrench
Motorshop
$31.67V-Twin - 16-1286 - Spark Plug WrenchDescriptionWrench is for 18mm early style air cooled 7/8" and 1-1/8" Champion hex plugs.Wrench fits new type Champion spark plug D-16. Fits:G 1937-1963UL 1937-1948WL 1937-1939Additional Information UOM1 - EA ...$31.67 -
V-Twin - 16-0907 - Thread Insert for Spark Plugs
Helicoil
$29.04V-Twin - 16-0907 - Thread Insert for Spark PlugsDescriptionHeli-Coil thread inserts only for spark plugs with thread size of 16mm and a length of .500". Includes 6 inserts, drill size of 23/32. Fits:All modelsAdditional Information UOM6 - PK ...$29.04 -
V-Twin - 16-0906 - Thread Repair Kit for Spark Plugs
Helicoil
$309.95V-Twin - 16-0906 - Thread Repair Kit for Spark Plugs Description The Heli-Coil thread repair kit is for spark plugs with thread size of 18mm and length of .500". This kit includes tap,installation tool, 24 inserts and complete instructions. ...$309.95 -
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 - 16-0372 - 18mm Spark Plug Socket Tool
Motorshop
$19.86V-Twin - 16-0372 - 18mm Spark Plug Socket ToolDescription18mm spark plug socket for use with hex box wrench.For taking apart OE and Beck spark plugs. Must use with wrench and vise. Fits:Custom application for 18mm spark plugsAdditional Information UOM1...$19.86 -
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 -
V-Twin - 15-1543 - Copper Spark Plug Sealing Washer
Gary Bang
$21.86V-Twin - 15-1543 - Copper Spark Plug Sealing WasherDescriptionReplica copper spark plug washer is insulator filled. Fits:FL 1948-1964Additional Information OEM No.32342-42 UOM5 - PK ManufacturerGary Bang OriginImported 2025 Catalog Pages677$21.86 -
V-Twin - 15-1376 - 18mm Spark Plug Copper Sealing Washer
Gary Bang
$17.86V-Twin - 15-1376 - 18mm Spark Plug Copper Sealing WasherDescriptionSpark plug gasket is a replica copper filled style and fits all 18mm spark plugs from 1908-1947. Fits:VL 1930-1934J 1916-1926EL 1936-1940F 1908-1915FL 1941-1947Additional Information OEM...$17.86 -
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 - 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 - 76081 - Spark Plug Wire - 90° - Black - Universal
Sumax
$35.95Sumax - 76081 - Spark Plug Wire - 90 - Black - 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 -
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 - 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
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!