DENSO Spark Plug FC16HR-Q8 Fits RAV4 Hybrid and Avalon

Toyota RAV4 Hybrid (2016-2023) and Avalon Hybrid (2019-2023) 2.5L hybrids, as well as post-2000 some Toyota/Lexus models, are compatible with this DENSO FC16HR-Q8 iridium spark plug. It ignites the mixture for efficient combustion, improving power response and fuel economy. OEM number FC16HR-Q8【3524】; no factory part number but directly substitutes original spark plug. Replacement difficulty: medium; recommended every 80,000-100,000 km; tighten with torque 25-30 N·m. Iridium electrode long life; resistance 6 kΩ; suitable for high-compression hybrid systems; reduces carbon buildup.