AC Delco Spark Plug #MR43T 4-PAK MR43T4 | 2024

AC Delco Spark Plug 4-PAK #603-MR43T4

• Smaller, more efficient, Iridium electrode designs improve cold starting and quicker acceleration. Designed to last over 100,000 miles in most applications. Require reduced ignition system voltage which increases lifespan of costly ignition system components.