NGK N2238 TR5 Spark Plug

, Tapered Spark Plug Seat Style, 14mm Thread Pitch

• Correct spark plug for GM 602, 604, and CT525 racing crate engines
• Also Works well in 4.8, 5.3, 5.7, 6.0, and 6.2 liter LS Gen III and Gen IV engines for stock and mildly modified street engines
• Features a 14mm thread and .708" reach with a 5/8" hex head
• Tip is made out of a nickel alloy material and has heat range of 5
• Core is made out of copper and projected insulator