Description:

[Vehicle Fitment]: Compatible with Cadillac CT4/CT5 2020-2022, CT6 2019-2019, XT4 2019-2023; Compatible with Chevrolet Blazer 2020-2021 2023; Compatible with GMC Acadia 2020-2022 --- L4 2.0L. [Reference Number]: 55511558, 55508084, 55511558, 55504354, UF-914. [Specifications]: Coil Terminal Quantity: 4; Terminal Type: Pin; Mount Type: Bolt On; Mounting Location: Valve Cover; Spark Plug Material: Iridium+Platinum; Gap Size(IN): 0.6-0.7; Thread Diameter(MM): 12; Installation Torque(N): 15N. [Iridium Spark Plug]: Iridium is a type of refined alloy which is highly suitable to be used as the materials of the central electrode in a spark plug. It extends the life of the spark plug nearly threefold, ensures a more stable idle speed of the engine, and delivers a super performance to the engine with improved fuel efficiency, reduced emissions and faster starting up..