NGK SPARK PLUGS Spark Plug - MAR9A-J 6869

Spark plug performance directly impacts engine efficiency, throttle response, and overall reliability—especially under high-load racing conditions. The NGK MAR9A-J delivers a wider effective heat range, eliminating the fouling issues that plague cooler plugs and the preignition risks of overly hot designs. If you're serious about extracting consistent power from your engine, this is the plug engineered to handle it.

Built with advanced materials and proven NGK engineering, this plug maintains optimal combustion temperatures across aggressive driving conditions, reducing misfires and extending service intervals between replacements.

• High alumina ceramics
• Improved heat dissipation
• Deep-seated copper core
• Nickel alloy tip
• Wide heat range capability
• Superior electrical insulation
• Extended service life
• MPN: 6869
• Fouling resistant design
• Preignition prevention