Equivalents for the Denso spark plug DG-121
Meet the Denso DG-121 spark plug featuring reach 15.2–19.0 mm, heat range medium. Browse its 136 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
Technical information Denso DG-121 spark plug
- Resistor
- no
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What can replace a Denso DG-121 spark plug?
The Denso DG-121 is interchangeable with: Bosch CH196, Champion W580, Denso G121, 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 DG-121?
Reach 15.2–19.0 mm, Heat range Medium, Electrode Iridium, 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.