Spark plug · Denso

Equivalents for the Denso spark plug IWM31

Denso IWM31 is an automotive spark plug with electrode iridium, heat range cold, thread 14 mm, tightening torque cast iron 25–35 N·m · aluminium 25–30 N·m — or 180°–240° (½–⅔ turn), reach 19.0 mm. All its 24 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…

Technical information Denso IWM31 spark plug

Torque
cast iron 25–35 N·m · aluminium 25–30 N·m — or 180°–240° (½–⅔ turn)

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What can replace a Denso IWM31 spark plug?

The Denso IWM31 is interchangeable with: NGK BR10ECM, Denso W31EMRZ-U, Torch G10RTI, NGK BR10ECMIX, NGK BR10ECMVX, Tacti V91104160. These spark plugs share the same mounting (thread, seat) and heat range.

What are the specifications of the Denso IWM31?

Thread 14 mm, Reach 19.0 mm, Heat range Cold, Electrode Iridium, Seat Flat (gasket), Torque cast iron 25–35 N·m · aluminium 25–30 N·m — or 180°–240° (½–⅔ 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.