The NGK R56738 Racing Spark Plug is designed to provide a stable spark and reliable operation when used with the engine and calibration specified by the manufacturer.

Designed for high-performance and high-temperature applications when this heat range and setup are specified by the manufacturer.

Compatible applications:

• Outboard engines, inboard engines, and personal watercraft (PWC) that specify NGK R56738.
• Compatibility depends on the make, model, year, displacement, and engine version; confirm the part number in your manual or on the installed spark plug before purchasing.

Features:

• Brand: NGK
• Model: R56738
• Technology / Family: Racing Spark Plug

Important: Verify the recommended part number, electrode gap, and installation torque indicated in your engine’s manual. A spark plug with incorrect dimensions, heat range, or calibration can affect the performance of the ignition system.