*Please Select Engine Configuration Before Ordering*
NGK spark plugs for TR1/MR1 Yamaha boat and waverunner engines.
MR1 and TR1 Engines Will Receive 2- 4 Packs (8 Spark Plugs Total)
Pre gapped - Works with both High Output and non High Output engines.
Includes Two Vials Of Wacker Brand Thread Lubricant (Heat-Sink Paste)
Boater's Pre-Season Checklist: DOWNLOAD CHECKLIST HERE
Spark Plug Swap Video
