Denso 3524 FC16HR-Q8 Iridium Long Life Spark Plug

Denso iridium long life spark plugs are factory installed on luxury vehicles by automakers such as GM, Toyota, Honda and Mitsubishi. 0.7mm iridium tipped laser welded fine wire center electrode and platinum tipped fine wire ground electrode minimize spark interference and maximize ignitability, resulting in better power, torque and fuel economy. 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.

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• 2021
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