Hyundai Kia (Multiple Models Applicable) Spark Plug 18849-11070 SILZKR7E11 OEM Replacement

For Hyundai/Kia cold-start difficulties or acceleration jitter, replace spark plug 18849-11070 (SILZKR7E11). This iridium plug directly replaces OEM 18849-11070; compatible with many Hyundai/Kia models post-2000; iridium electrode offers stable ignition and longer life. Installed in cylinder head to generate high-voltage spark at end of compression, igniting the mixture to drive operation. Replacing improves idle jitter, responsiveness, and fuel economy. If acceleration seems sporadic or fuel economy is abnormal, inspect and replace to protect engine performance.