Spark Plug Set (6pcs) - 5/8" Hex High Performance Twin Plug Engine Applications (IGN R 5672A 9)
High Performance Spark Plugs with 5/8" hex for clearance - Used In Twin Plug Conversions With Standard Compression Ratio
Our preferred spark plug for twin plug applications. With a standard depth in combustion chamber
NGK - Sold as a set of 6 - 2 sets for twin plug application
Alternate Part Numbers: IGN R 5672A 9 / R.5672A.9 / R5672A9 / 7405