Cycle Performance Spark Plug Indexing Washers

Available to fit 10mm, 12mm and 14mm spark plug threads
Allows the tuner to precisely index spark plugs for maximum fuel burn
Kit includes 15 washers:
- five .040" thick
- five .050" thick
- five .060" thick
Made in the USA

Specification	Details
Country of Origin	USA
Quantity	15
Size	Varies (make selection above)

Customer Reviews

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Only place that I had found that carried these 12MM indexing washers. I put them to use on my 60+ year old race car engine with a aluminum cylinder head. You still have to install plugs down finger tight mark where the plug electrode end is. Then figure a additional 1/2 turn for full tightness to see where the plug would end up at. The 1/2 turn comes just short of 10 ft lbs. of torque that is the aluminum cylinder head recommended maximum torque.

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