NGK Iridium Spark Plug 454-502
This is an NGK Iridium Spark plug to replace the stock plugs found in many 454-502 marine big block engines. (replaces AC-MR43T).
Product Number: NGK 454-502
Tip Design: Non-extended Seat Design: Tapered Heat Range: Stock Threads: 14mm Resistor: Yes Gap: .035"