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Spark Plug Indexing Washers

$15.24 $12.19

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Indexed Spark Plugs align the open end of the electrode towards the intake port.

The hottest flame meets the new fuel charge for a performance gain, increases h.p, fuel mileage, & plug life.

This is a speed secret car racers have used for years. You simply mark the electrode side of the plug with a magic marker on the porcelain. You then shim the plug with washers to align the electrode towards the intake port. Fits 14mm plugs.

4 washers in each kit.

red= 1.68mm Blue= 1.23mm Silver 1.04mm Gold= .91mm

Major two stroke tuning secret!

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