NGK ARF42-8 Spark Plug
Specs, cross-brand equivalents, vehicle fitment, and live prices for the NGK ARF42-8.
The NGK ARF42-8 is a 18mm thread, gasket seat, copper electrode spark plug. These specifications are decoded from the NGK part number and determine which plugs it safely cross-references to — a valid equivalent must match the thread, reach, seat and heat range.
Cross-reference equivalents
| Brand | Part | Metal | Buy |
|---|---|---|---|
| Denso | ITF16 | Iridium | Buy |
| Denso | T16PR-U15 | Copper | Buy |
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