Spark plug · Denso

Equivalents for the Denso spark plug S109

Denso S109, a spark plug : thread 12 mm, tightening torque cast iron 15–25 N·m · aluminium 15–20 N·m — or 180° (½ turn), reach 26.5 mm, heat range very cold, electrode iridium. Compare its 64 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.

Technical information Denso S109 spark plug

Torque
cast iron 15–25 N·m · aluminium 15–20 N·m — or 180° (½ turn)

→ How to read a Denso reference

Buy this spark plug Denso S109 — best retailers

Partner links: a purchase made through these links may earn us a commission, at no extra cost to you.

What can replace a Denso S109 spark plug?

The Denso S109 is interchangeable with: NGK ILKAR7B11, Bosch VR7NII33X, Champion OE253, NGK ILKAR7C10, NGK ILKAR7C11, NGK ILKAR7L11. These spark plugs share the same mounting (thread, seat) and heat range.

What are the specifications of the Denso S109?

Thread 12 mm, Reach 26.5 mm, Heat range Very cold, Electrode Iridium, Torque cast iron 15–25 N·m · aluminium 15–20 N·m — or 180° (½ turn)

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.