Multi-brand Universal Iridium Spark Plug 6637 BPR6EIX Strong Ignition, Moderate Heat Range

Universal iridium spark plug 6637 BPR6EIX for Toyota, Nissan, Subaru, Mazda post-2000 models; plugs into cylinder head spark plug hole to ignite mixture and ensure smooth operation and power output. OEM 6637 BPR6EIX; installation difficulty: medium; labor 1–2 hours. If idle jitter, acceleration hesitation, or increased fuel consumption occur, electrode wear or carbon buildup; replace promptly.