Equivalents for the Opel spark plug 121418
Opel 121418 is an automotive spark plug — heat range medium, reach 15.2–19.0 mm. Here are its 151 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
Technical information Opel 121418 spark plug
- Resistor
- no
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What can replace a Opel 121418 spark plug?
The Opel 121418 is interchangeable with: Bosch CH203, Champion W425, Denso DG145, Bosch GLP040, Bosch GLP228, Champion CH203. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Opel 121418?
Reach 15.2–19.0 mm, Heat range Medium, 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.