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Engine Oil
Primary Oil
Transmission Oil
Oil Filters
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Brake cleaner &...
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Maintenance Kits

Everything you need to service your Harley-Davidson on your own. In this category, you’ll find complete DIY maintenance kits, including engine oil, transmission oil, primary oil, and high-quality oil filters, designed specifically for Harley-Davidson models. Whether you're doing a routine oil change or preparing for a long ride, these kits ensure your bike stays in peak condition without visiting the shop.

Spark Plug — Thread reach 19.1 mm (3/4"), thread size 12 mm, hex 16 mm (5/8"), spark gap 0.9 mm, heat range 6

-€3.75

NGK SPARK PLUGS Spark Plug — Thread reach 19.1 mm (3/4"), thread size 12 mm,...

Durable spark plug with trivalent plating, alumina-silicate ceramic insulator, triple seals, corrugated ribs, and a copper core for reliable ignition and heat control.

€4.45 €8.20

-€2.60

POWERMADD E3 Resistor Spark Plug — 14 mm thread, 19.1 mm reach, 20.6 mm hex

Diamond Fire electrode design yields faster, more complete combustion for improved engine performance.

€7.35 €9.95

-€2.60

POWERMADD E3 Resistor Spark Plug — 12 mm, 19.1 mm reach

Unique Diamond Fire electrode shape for faster ignition, more complete combustion, and improved engine performance.

€7.35 €9.95

Thumper® Racing Synthetic Ester Blend 4T Engine Oil — 1 L (1.05 US qt), 10W-40, JASO MA2

-€4.23

BEL-RAY Thumper® Racing Synthetic Ester Blend 4T Engine Oil — 1 L...

High-performance ester blend 4T engine oil for single-cylinder off-road and racing motorcycles and ATVs; exceptional anti-wear protection and consistent clutch performance.

€9.56 €13.79

Spark Plugs — 12 mm thread, 19.1 mm reach (3/4"), 16 mm hex (5/8"), DCPR7E, Heat 7

-€2.73

DRAG SPECIALTIES Spark Plugs — 12 mm thread, 19.1 mm reach (3/4"), 16 mm hex...

Black ceramic-body spark plugs with a copper core electrode for improved conductivity, strong insulation, and long service life.

€5.85 €8.58

$Spark Plugs — 19.1 mm reach, 12 mm thread, 16 mm hex (5/8\"), Heat Range 8$

-€2.73

DRAG SPECIALTIES Spark Plugs — 19.1 mm reach, 12 mm thread, 16 mm hex (5/8\"),...

Black ceramic body with red logo; 95% alumina insulator; multi-rib design eliminates flashover; nickel-plated housing; copper core electrode; leak-free multi-layer gaskets.

€5.85 €8.58

EXS Synthetic Ester 4T Engine Oil — 1 L (1.05 US qt), 10W-50, JASO MA2

-€5.28

BEL-RAY EXS Synthetic Ester 4T Engine Oil — 1 L (1.05 US qt), 10W-50,...

100% synthetic ester base oil offering superior film strength, exceptional shear stability, extreme pressure protection for smoother shifting, and reduced friction for extended drain intervals in performance-oriented machines.

€13.11 €18.39

-€2.73

DRAG SPECIALTIES Spark Plugs — 14 mm thread, 19.1 mm reach (3/4 in), BPR5ES-11

Black ceramic spark plugs with a copper-core electrode for long service life. Multi-rib insulator prevents flashover; nickel-plated housing resists corrosion.

€5.85 €8.58

EXS Synthetic Ester 4T Engine Oil — 10W-50, 4 L (1.05 US gal), JASO MA2

-€17.33

BEL-RAY EXS Synthetic Ester 4T Engine Oil — 10W-50, 4 L (1.05 US gal),...

100% synthetic ester-based 4T oil delivering superior film strength, shear stability and protection for extended drain intervals.

€48.90 €66.23

Spark Plugs — BPR7ES-11, 14 mm thread, 19.1 mm reach (3/4"), 16 mm hex (5/8"), heat range 7

-€2.53

DRAG SPECIALTIES Spark Plugs — BPR7ES-11, 14 mm thread, 19.1 mm reach (3/4"),...

Distinctive black-ceramic plugs with multi-rib insulator, nickel-plated housing and copper-core electrode for long life and reliable ignition.

€5.42 €7.95

-€3.76

BEL-RAY EXL Mineral 4T Engine Oil — 1 L, 10W-40, JASO MA2

Premium 4T engine oil delivering superior anti-wear protection, corrosion resistance, reduced evaporation and excellent wet clutch performance; ideal for frequent oil-change intervals in motocross and dual-sport riding.

€8.19 €11.95

Spark Plugs, Iron XL — 14 mm, projected center electrode, nickel alloy tip

-€2.43

DRAG SPECIALTIES Spark Plugs, Iron XL — 14 mm, projected center electrode,...

Distinctive black ceramic body with red logo; 95% alumina insulator resists heat shock. Multi-rib design prevents flashover. Nickel-plated housing and copper core electrode for corrosion resistance and reliable conductivity.

€5.20 €7.63

EXL Mineral 4T Engine Oil — 10W-40, 4 liter (1.05 US gal.), JASO MA2

-€10.72

BEL-RAY EXL Mineral 4T Engine Oil — 10W-40, 4 liter (1.05 US gal.),...

Premium 4T engine oil formulated with mineral base oils and a superior additive package. Provides excellent anti-wear protection, corrosion resistance, reduced evaporation loss, and reliable wet clutch performance. Ideal for motocross and dual-sport riders with recommended change intervals of 2–4 hours (mx) or 2,500–3,000 miles (dual sport).

€28.83 €39.55

Spark Plugs, Iron XL — 14 mm thread, projected center electrode, heat range 6

-€2.43

DRAG SPECIALTIES Spark Plugs, Iron XL — 14 mm thread, projected center...

Black ceramic-body spark plugs with red logo, 95% alumina insulator, multi-rib design, nickel-plated housing and copper core for long life.

€5.20 €7.63

-€2.53

DRAG SPECIALTIES Spark Plugs, Iron XL — 14 mm thread, Heat Range 6, Pair

Black ceramic-body plugs with copper-core electrode, multi-rib insulator to prevent flashover, and nickel-plated housing for corrosion resistance.

€5.42 €7.95

-€10.72

BEL-RAY EXL Mineral 4T Engine Oil — 4 L, 20W-50, JASO MA2, API SN

Premium mineral 4T engine oil with a superior additive package for excellent anti-wear protection, corrosion resistance, reduced evaporation and reliable wet clutch performance.

€28.83 €39.55

-€2.33

DRAG SPECIALTIES Spark Plugs, Iron XL — 14 mm thread, Heat range 5, Pair

Black ceramic body with bold red logo, 95% pure alumina insulator, multi‑rib design to prevent flashover, nickel‑plated housing and copper core electrode for long life.

€4.99 €7.32

-€12.81

BEL-RAY EXP Synthetic Ester Blend 4T Engine Oil — 4 L, 10W-40, JASO MA2

Semi-synthetic 4T engine oil with ester-based additives for improved film strength, smoother shifting, and prolonged wet clutch life.

€35.94 €48.75

-€1.55

MOOSE OFFROAD HARD-PARTS Plug Carrier — Pair

Impact-resistant sleeve protects spare spark plugs and fits in a fanny pack or fender bag.

€4.40 €5.95

EXP Synthetic Ester Blend 4T Engine Oil — 1 L (1.05 US qt), 10W-40, 4-stroke

-€4.21

BEL-RAY EXP Synthetic Ester Blend 4T Engine Oil — 1 L (1.05 US qt),...

Synthetic ester blend 4T engine oil designed to improve transmission protection, stabilize viscosity across temperatures, and extend wet clutch life.

€9.58 €13.79

Iridium Spark Plugs — 12 mm thread, 17.5 mm reach, 16 mm (5/8") hex, pair

-€7.19

DRAG SPECIALTIES Iridium Spark Plugs — 12 mm thread, 17.5 mm reach, 16 mm...

Ultra-fine iridium electrode for hotter spark and longer service life; black ceramic with red lettering and corrosion-resistant shell.

€15.41 €22.60

EXP Synthetic Ester Blend 4T Engine Oil — 1 L (1.05 US qt), 15W-50, 4-Stroke

-€4.21

BEL-RAY EXP Synthetic Ester Blend 4T Engine Oil — 1 L (1.05 US qt),...

Combines synthetic ester performance with selected petroleum components for smoother shifting, improved film strength and prolonged wet clutch life. Ideal for recreational and performance scooters and on- and off-road machines.

€9.58 €13.79

Resistor Spark Plug — 19.1 mm reach, 12 mm thread, 16 mm hex, heat range 7

-€5.90

NGK SPARK PLUGS Resistor Spark Plug — 19.1 mm reach, 12 mm thread, 16 mm hex,...

Resistor spark plug with wide heat range to reduce fouling and preignition; high-alumina ceramic, copper core, nickel-alloy tip.

€6.60 €12.50

EXP Synthetic Ester Blend 4T Engine Oil — 15W-50, 4 L (1.05 US gal)

-€12.81

BEL-RAY EXP Synthetic Ester Blend 4T Engine Oil — 15W-50, 4 L (1.05 US...

Semi-synthetic 4T engine oil blending synthetic ester for improved film strength, smoother shifting and extended wet clutch life.

€35.94 €48.75

Spark Plugs — Thread 10 mm, Reach 19.1 mm (3/4"), Hex 16 mm (5/8"), CR9E

-€2.73

DRAG SPECIALTIES Spark Plugs — Thread 10 mm, Reach 19.1 mm (3/4"), Hex 16 mm...

Distinctive black ceramic body, 95% alumina insulator with multi-rib design, nickel-plated housing, multi-layer gaskets, and copper-core electrode for long life.

€5.85 €8.58

-€4.23

BEL-RAY Thumper® Racing Synthetic Ester Blend 4T Engine Oil — 15W-50, 1 L

High-performance ester-based 4T engine oil formulated for single-cylinder off-road and racing motorcycles and ATVs; delivers anti-wear protection, smoother shifting, and consistent clutch performance.

€9.56 €13.79

Thumper® Racing Synthetic Ester Blend 4T Engine Oil — 4 L (1.05 US gal.), 15W-50

-€12.27

BEL-RAY Thumper® Racing Synthetic Ester Blend 4T Engine Oil — 4 L...

Ester-based synthetic blend for single-cylinder off-road and racing motorcycles and ATVs. Provides superior anti-wear protection, smoother shifting and consistent clutch performance under extreme conditions.

€33.72 €45.99

Champion Spark Plugs — Thread reach 19 mm (3/4"), Thread size 10 mm, Spark gap 0.8 mm (0.031"), Resistor type

-€1.98

CHAMPION Champion Spark Plugs — Thread reach 19 mm (3/4"), Thread size...

Reliable motorcycle spark plugs with copper-core electrode, fine-wire ignitable electrodes, reduced fouling, and SAC-9 resistor for EMI/RFI suppression.

€1.76 €3.74

Spark Plug Head Bolt Cover — Chrome, Silver

-€18.21

KURYAKYN Spark Plug Head Bolt Cover — Chrome, Silver

Stepped and slotted design complements the engine; faceted edges reflect light. Easy to install for a clean, finished look.

€70.78 €88.99

-€18.21

KURYAKYN Spark Plug Head Bolt Cover — Black gloss, pair

Stepped and slotted spark plug head bolt cover that installs easily for a refined engine finish.

€70.78 €88.99

Showing 1-30 of 187 item(s)

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