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1 Level
1231 Review
34 Karma

Review on Spark Plug Index Shim by Allstar Performance ALL96506 by Sammie Rodriguez

Revainrating 5 out of 5

Large index discs

These index discs are finished thin, silver 0.008, black 0.012. I've had other brands and their thin washer was .048 copper. You can adjust the index anywhere, and they don't pull the spark plug out of the cylinder like thick washers. I was very pleased with how easy it worked.

Pros
  • Absolute legend
Cons
  • Disappearing