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OverviewRestore factory performance and efficiency to your Toyota or Lexus with the OEM SC16HR11 Iridium Spark Plug. Manufactured by DENSO in Japan, this plug is the exact original equipment specified for Toyota's modern 1.8L ZR and NR engine families. Featuring a 0.7mm iridium center electrode and a platinum-tipped ground electrode, it is engineered to deliver reliable ignition for up to 100,000 miles, ensuring optimal fuel economy and smooth idling.Key BenefitsUltimate Longevity: Rated for 100,000+ miles (160,000 km) thanks to the high-durability Iridium and Platinum construction.Resolved Carbon Fouling: This "16" heat range plug is the official Toyota update to supersede the older "20" heat range (SC20HR11), running slightly hotter to burn off carbon deposits and prevent cold-start misfires.Superior Ignitability: The ultra-fine 0.7mm Iridium Center Electrode concentrates spark energy, requiring less voltage to fire and improving throttle response.OEM Fit & Finish: Guaranteed compatibility with Toyota coil packs and cylinder head threads—no gapping or modifications required.
