BMW B48 B58 Gen 1 spark plugs NGK 94201 - fast road & track day

NGK Laser Iridium spark plugs (94201) for BMW B48 and B58 Gen 1 engines. Designed for stock, fast road and track day use - not just OEM replacement.

• 14mm double-hex design; requires thin-wall socket
• Fine-wire iridium centre electrode + platinum ground pad for stable spark and even wear
• Iridium tip six times harder than platinum - suits E85, water methanol injection and larger turbos
• Factory gap 0.030 inch; adjustable down to 0.028 inch (stock turbo) or 0.022 inch (aftermarket turbo)