Description
Spark plug indexing is critical for optimizing combustion efficiency and maximizing ignition performance in high-performance engines. These Allstar shims allow precise electrode positioning relative to the combustion chamber, ensuring consistent flame kernel development across all cylinders. A complete set of 60° and 90° options gives you the flexibility to dial in the exact geometry your engine demands.
- Manufacturer: Allstar Performance
- Part Number: ALL96506
- Fitment: ALL-PRO cylinder heads
- Seat Type: 14mm flat seat
- O.D. Size: Small
- Shim Angles: 60° and 90°
- Quantity: Set of 24
- Material: Steel construction
- Installation: Bolt-on washers
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