Equivalents for the Denso spark plug G121
The Denso G121 spark plug : heat range hot, reach 15.2–19.0 mm. Browse its 131 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
Technical information Denso G121 spark plug
- Resistor
- no
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What can replace a Denso G121 spark plug?
The Denso G121 is interchangeable with: Bosch CH196, Champion W580, Denso DG121, Bosch GLP024, Bosch O25O2O2131, Champion GX96. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Denso G121?
Reach 15.2–19.0 mm, Heat range Hot, Resistor no, Seat Flat (gasket)
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.