The HKS Super Fire Racing MR45HLZ is a Ruthenium-alloy spark plug from the MR series, an NGK 9 equivalent heat range HL-type plug developed for the Honda Civic Type R FK8 2.0 turbo and similar M12 long-reach protruding-electrode applications. The ruthenium center electrode improves fuel burn for quicker throttle response, smoother idle, and better cold starts, with extended life over standard plugs and a colder heat range for tuned cars. Sold individually.
Specifications
| Brand | HKS |
| Product Line | Super Fire Racing MR-Series |
| Heat Range | NGK 9 equivalent |
| Seat / Type | HL type (M12 long reach, protruding) |
| Thread | φ12 x 26.5 mm |
| Hex (Wrench) | 14 mm |
| Center Electrode | 0.6 mm ruthenium alloy |
| Application | Honda Civic Type R FK8 (and similar) |
| Quantity | Single plug |
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