Ignition coil boot / spark plug connector for selected Toyota and Lexus vehicles with 2GR-FE and 2GR-FXE 3.5L engines. Designed for coil-on-plug ignition coils used on Toyota/Lexus 2GR applications listed in the fitment table. 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.