2003 HARLEY-DAVIDSON Ignitions & Electrical

Spark Plug, Standard Series, Gasket Seat, 12mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-3932

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Spark Plug, Standard Series, Gasket Seat, 12mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-4339

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Spark Plug, Copper Core, Gasket Seat, 12mm Thread, .750 in. Reach, Partial Projected, Resistor, Each

Part Number: ATL-4164

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Spark Plug, XP Xtreme Performance, Iridium, 12mm Thread, 0.750 in. Reach, Gasket Seat, 11/16 in. Wrench Size, Each

Part Number: ATL-XS4164

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Spark Plug, Copper Plus, 12mm Thread, .750 in. Reach, Resistor, Each

Part Number: CPN-810

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• $25 Summit Bucks

Spark Plug, E3, Gasket Seat, 12mm Thread, 0.750 in. Reach, Projected Tip, Resistor, Each

Part Number: ETP-E3-36

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Spark Plug, XS Xtreme Sport, Iridium, 12mm Thread, 0.750 in. Reach, Gasket Seat, 11/16 in. Wrench Size, Each

Part Number: ATL-XS4162

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Spark Plug, Iridium, Iridium, 12mm Thread, 0.750 in. Reach, Flat Seat, 5/8 in. Wrench Size, Each

Part Number: CPN-9701

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• $25 Summit Bucks

Spark Plug, RA8HC, Copper Core, 12mm Thread, .750in. Reach, Resistor, Each

Part Number: CPN-810C

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• $25 Summit Bucks

Spark Plug, 12mm Thread Size, .750 in. Reach, 6 Heat Range, Powersports, Each

Part Number: CPN-8809-1

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• $25 Summit Bucks

Starter Rebuild Parts, Jackshaft Repair Kit, 10-tooth, Harley-Davidson®, Kit

Part Number: HDD-820-50973

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

• Drop Ship
• Special Order

Jackshaft, JACKSHAFT REPAIR KIT FOR 820-5

Part Number: HDD-820-50975

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Special Order