Equivalents for the Denso spark plug DG121
Meet the Denso DG121 spark plug — heat range medium, reach 15.2–19.0 mm. Here are its 136 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
Technical information Denso DG121 spark plug
- Resistor
- no
Buy this spark plug Denso DG121 — 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 DG121 spark plug?
The Denso DG121 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 DG121?
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.