Ignition coil boot / spark plug connector for Toyota, Lexus and Scion vehicles with 1AZ-FE, 2AZ-FE and 2AZ-FXE AZ-series engines. Designed for coil-on-plug ignition coils used with Toyota/Lexus references 90080-19023, 90919-02243, 90919-02244 and 90919-02266. The boot seals the spark plug well and provides the high-voltage connection between the ignition coil and spark plug. Recommended for replacement when the original rubber boot is cracked, hardened, oil-contaminated or shows signs of voltage leakage, misfire or arcing.