Proform - Spark Plug Indexing Tool (778-66795)
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60 days return policy
Spark plug indexing is now made simple with this Proform Indexing Tool. It's no surprise that high compression engines run better when the spark plugs have been indexed. Spark plugs can now be properly set so there is no piston dome interference. This extremely helpful tool is inexpensive and a must have for any engine builder or mechanic.