Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith

Spark Plug Index Washers, Tapered

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Specs
Sold in Quantity:
Set
Inside Diameter:
.53
Outside Diameter:
.69
Notes
Used for indexing the orientation of the spark plug electrode in the combustion chamber.

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Please NOTE the following about this product:

  • This item is sold as a set.

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What's in the Box

For use on all 14 mm spark plugs. Ten washers, each of three thicknesses, stamped copper. 30 per package.

545-71900 Instructions (PDF)

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545-71910 Instructions (PDF)