Equivalents for the Harley Davidson spark plug 0403
The Harley Davidson 0403 spark plug : thread 14 mm, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour), heat range medium, reach 9.5 mm. Compare its 949 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
Technical information Harley Davidson 0403 spark plug
- Resistor
- no
- Torque
- fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)
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949 equivalents compatible with the Harley Davidson 0403 spark plug




















































































































































































































































































































































































































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No equivalent for this brand selection.
What can replace a Harley Davidson 0403 spark plug?
The Harley Davidson 0403 is interchangeable with: Bosch H6B, Champion H8, Denso W14, Bosch W5E, Bosch W7E, Bosch W7F. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Harley Davidson 0403?
Thread 14 mm, Reach 9.5 mm, Heat range Medium, Gap 1.5mm, Resistor no, Seat Flat (gasket), Torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.