Spark plug · Harley Davidson

Equivalents for the Harley Davidson spark plug HD4A

Harley Davidson HD4A is an automotive spark plug featuring thread 14 mm, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour), heat range medium. All its 59 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…

Technical information Harley Davidson HD4A spark plug

Torque
fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)

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What can replace a Harley Davidson HD4A spark plug?

The Harley Davidson HD4A is interchangeable with: Bosch W9AO, Champion H10, Denso L14, Champion H11, Champion H12, Champion H10C. These spark plugs share the same mounting (thread, seat) and heat range.

What are the specifications of the Harley Davidson HD4A?

Thread 14 mm, Heat range Medium, 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.