The Toyota Genuine Spark Plug (90919-01221), also known by its Denso manufacturer part number SK20BGR11, is a high-performance iridium spark plug specifically engineered for Toyota’s direct fuel-injection engines.

• The Toyota 90919-01221 SK20BGR11 is a “Long Life” iridium spark plug designed to provide high ignition performance and durability. According to Denso, this specific design features three earthed (ground) electrodes to ensure reliable spark generation even if the main electrode becomes fouled, which is particularly beneficial for direct-injection (D-4) engines.

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