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Tag: ruthenium spark plugs
| # | Post Title | Date | User |
| Toyota OEM spark plug replacement for 90919-01233 (Denso SK16HR11) | 4 years ago | FutureSoCalEscapee | |
| Are NGK Ruthenium HX spark plugs worth the money vs. Iridium? | 5 years ago | wfromme | |
| Ruthenium Spark Plugs | 5 years ago | pdiddler | |
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