Equivalents for the PAL spark plug 21R51
Meet the PAL 21R51 spark plug featuring reach 15.2–19.0 mm, heat range very hot. 151 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information PAL 21R51 spark plug
- Resistor
- no
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What can replace a PAL 21R51 spark plug?
The PAL 21R51 is interchangeable with: Bosch CH62, Champion CH62, Denso DG202, Bosch CH170, Bosch CH62002, Champion CH70. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the PAL 21R51?
Reach 15.2–19.0 mm, Heat range Very 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.