Set of 8 NGK TR-5 Spark Plugs for LS Engines
TR-5 spark plugs are nearly identical to the TR-55, but come with a tighter plug gap out of the box (.035 instead of .050). These plugs are great for applications that require a tighter plug gap, but need a hotter plug than the TR-6 (TR-5s are one heat range hotter than TR-6s).
NOTE: If you're running a naturally aspirated, bolt-on, combination, we recommend NGK TR-55 plugs.
Heat range 5, copper core. Also known as NGK V-POWER Part Number 2238.
As the largest OE manufacturer of spark plugs in North America, NGK brings more than 80 years of automotive experience into producing some of the best performing and most reliable spark plugs in the industry. From passenger vehicles to race cars, motorcycles to watercraft, NGK offers high-quality spark plugs for nearly every application.