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Spark plug # Question

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Old 07-02-2007, 12:37 AM
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Default Spark plug # Question

I purchased NGK TR 55's. What are the correct numbers on the top left of the package. Mine are 018-3638-6. Is this the right? I'm just not sure if I purchased the right ones for my 02 SS. Also are they a colder plug? Thanks
Old 07-02-2007, 01:25 AM
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TR5's are the stock heat range. The second 5 is the gap.




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