Equivalents for the Denso spark plug D 81
The Denso D 81 spark plug featuring thread 18 mm, electrode iridium, tightening torque cast iron 20–30 N·m · aluminium 20–30 N·m — or 180°–240° (½–⅔ turn), reach 19.0 mm, resistor type (RFI-suppressed), heat range medium. Find its 224 compatible and interchangeable spark plugs: cross-references for NGK, Bosch, Champion, Denso and every brand.
Technical information Denso D 81 spark plug
- Resistor
- Yes
- Torque
- cast iron 20–30 N·m · aluminium 20–30 N·m — or 180°–240° (½–⅔ turn)
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What can replace a Denso D 81 spark plug?
The Denso D 81 is interchangeable with: NGK A6FS, Bosch W2C, Champion F10, NGK APR6F, NGK APR6FS, Bosch WR5. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Denso D 81?
Thread 18 mm, Reach 19.0 mm, Heat range Medium, Electrode Iridium, Resistor Yes, Seat Tapered, Torque cast iron 20–30 N·m · aluminium 20–30 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.