You're buying ONE(1) New Factory Fresh AR3933X Surface Gap Racing Spark Plug that fits primarily high-performance/racing applications.
The experimental "X" plug is similar to the regular AR3933... but sports a specially machined four-corner firing surface gap style instead of the normal single electrode.
Specs. are 5/8" hex, 3/4" reach, 14mm thread, nickel plated shell, gasket seat, non-resistor.
FREE Shipping to US 50 states/territories. Others determined by postal zip code.
| Part Desc | High Performance Racing Non-Resistor Spark Plug |
| Thread Size | 14mm X 1.25 |
| Reach | 3/4" |
| Hex Size | 5/8" (16mm) |
| Seat Type | Gasket |
| Tip Configuration | Short Projection |
| Resistor | Non Resistor |
| Metal Type | Copper |
| Terminal Type | No |