Mercury / Quicksilver NGK BPR6EFS Spark Plug
- Brand:
- Mercury
- Part no:
- 816336Q
Where to buy
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The BPR6EFS is an NGK spark plug supplied under the Mercury and Quicksilver part number 816336Q. It comes pre-gapped to the engine maker's specification, though the maker still recommends checking the gap before it goes in. The insulator is a pure alumina silicate ceramic, and a triple seal is there to help prevent leakage.
Our take
The triple seal on the BPR6EFS is aimed at stopping leakage past the plug, and the ceramic insulator is described as strong. Even so, it ships pre-gapped only to the engine maker's setting, so check the gap before fitting.