Ignition Coil Upgrade Kit

The HIGHSPARK IGNITIONCOIL Japan Ignition Coil Upgrade Kit is an aftermarket performance solution engineered for 2005-2013 Lexus IS250 and IS350 models equipped with the 2.5L 4GR-FSE engine. By addressing common ignition system concerns such as engine hesitation, misfires, and uneven starting, this kit provides a more stable, consistent spark for improved combustion efficiency and throttle response. Each coil is built using premium components, including high-grade German copper wire and Japanese Kyocera resin, to ensure superior heat resistance and long-term durability compared to factory coils. With a rated 15 kV peak output compared to the 10 kV OEM standard, this system delivers 2–2.5× stronger spark energy, supporting smoother acceleration and better overall engine responsiveness. The kit integrates directly with the factory ignition system for a straightforward, bolt-on replacement process. While standard kits are suitable for street use and occasional track sessions, this performance upgrade is intended to support the higher ignition demands of various driving styles, including road racing, drag racing, and drifting. Compatibility is strictly limited to 2005-2013 Lexus IS250 and IS350 2.5L models. Please note that this kit is not compatible with later Lexus models outside of this specific 2005-2013 range, such as the 2018-2024 Lexus IS 350 AWD.