*Please Select Engine Configuration Before Ordering*
Box of NGK spark plugs for TR1/MR1 Yamaha boat and waverunner engines.
MR1 and TR1 Engines Will Receive 2- 4 Packs
Pre gapped - Works with both High Output and non High Output engines.
Spark Plugs Include One Vial Of Wacker Brand Thread Lubricant (Heat-Sink Paste) Per Engine
Spark Plug Swap Video