Equivalents for the Arvin spark plug 21R166
Arvin 21R166 is a spark plug : heat range medium, reach 15.2–19.0 mm. 155 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information Arvin 21R166 spark plug
- Resistor
- no
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What can replace a Arvin 21R166 spark plug?
The Arvin 21R166 is interchangeable with: Bosch GLP010, Champion E016, Denso G004, Bosch GLP121, Bosch GLP186, Champion W561. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Arvin 21R166?
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.