Indexed spark plugs align the open end of the electrode toward the intake port. The hottest flame meets the new fuel charge for a performance gain, increases fuel mileage and plug life. This is a speed secret car racers have used for years. You simply mark the electrode side of the plug with a magic marker on the porcelain. You then shim the plugs with the washers to align the electrodes toward the intake ports. Fits 14mm threaded spark plugs.
| Product Type | |
| Spark Plugs | |
INDEXING WASHER KIT 3-CYLINDER 12/PK
- Brands SP1
- Product Code: 7727
- Sku: 14-1107
- Availability: Out Of Stock
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$10.99
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