Description

SPARK PLUG PKG
Use Case & Fitment

Colder-heat plug (heat range 2) designed for high-performance or modified applications to avoid detonation, especially in boosted or high-RPM engines. [highwaystars.net]
Not ideal for typical street vehicles—it may run too cool and foul if used outside of demanding environments. [highwaystars.net]
OEM equivalent for GM part numbers: 19157982, 19300874, 23. [rockauto.com]
Compatible with various late‑’70s to mid‑’80s GM models (e.g., Buick Skylark/Skyhawk, Cadillac Cimarron, Chevy Citation, Celebrity, Chevette, Cavalier)