NGK Spark Plug DCPR6E Marine Motorboat Speedboat Ship Engine Part 3481

If your outboard motor or jet ski shows starting difficulty, unstable idle, obvious jerking during acceleration, or even stall, this is typically a symptom of worn or heavily carbonized spark plugs. Properly functioning spark plugs ignite the mixture precisely, ensuring smooth power delivery and stable fuel economy. This NGK DCPR6E (part number 3481) is specifically designed for marine engines, compatible with most outboards and speedboats manufactured after 2000, without a specific OEM number but broadly compatible with Yamaha, Mercury, and other major brands. Installation uses a torque wrench per factory standards (about 20-25 N·m), avoid over-tightening to prevent cylinder head thread damage, and ensure electrode gap of 0.8-1.0 mm.