Denso Spark Plug K20TR-11 1PC

Denso Spark Plug Multi-ground electrodes specified by engine manufacturer for unusual combustion chamber design. Copper core for better thermal conductivity. Machine rolled threads to reduce cross-threading and seizing . The plug insulator is constructed of purified alumina powder for extreme stress with 5 ribs to prevent flashover.

• 2 ground electrodes increase durability
• Machine rolled threads prevent seizing or cross threading during installation and removal
• 100% pre-fired to assure the highest quality possible
• Purified alumina powder insulator provides exceptional strength and thermal conductivity
• Five rib insulator prevents flashover
• Copper-glass seal bonds center electrode and insulator for a gas-tight seal