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Old 01-15-2011 | 09:10 PM
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w8ye
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From: Shelby, OH
Default RE: G62 Electronic Ignition sparkplug
The NGK plugs with the "F" on the end are Tapered seat.

The NGK plugs with the "A" on the end have a gasket seat

I have swapped these back and forth in some engines and couldn't see any difference in performance or compression.


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