Honda, Toyota, Nissan multi-model universal replacement choice, Iridium Spark Plug LZKR6B-E 94937

This replacement uses an iridium center electrode; compared with OEM nickel alloy plugs, it offers significantly improved ignition stability and electrode resistance to burning, with high-temperature and high-pressure durability; lifespan typically extended 2–3 times. OEM 94937; fits Toyota models produced after 2000, also compatible with some Honda and Nissan engines with the same thread size. Function: ignite the air–fuel mixture to keep idle smooth and acceleration responsive. Installation difficulty: medium; requires spark plug socket and torque wrench; cold-start operation recommended; tighten to specified torque to avoid thread damage.