Spark Plug set of 6 - 5/8" High Performance Twin Plug (IGN.R.5672A.9)


  • $31.50
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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   7405

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