Spark Plug Indexing Washers

Marsoni

M251S

$15.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Spark Plug Indexing WashersIndexed 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.

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