Spark plug · Splitfire

Equivalents for the Splitfire spark plug SM21F

The Splitfire SM21F spark plug featuring heat range medium, thread 14 mm, reach 11.1 mm, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour). Compare its 58 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.

Technical information Splitfire SM21F 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 Splitfire SM21F spark plug?

The Splitfire SM21F 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 Splitfire SM21F?

Thread 14 mm, Reach 11.1 mm, Heat range Medium, 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.