OE Replacement; 3/4 Inch Thread Reach
- Includes (4) 403 Spark Plugs.
- Thread Size: 14mm, Thread Pitch: 1.25mm, Seat Type: Gasket, Reach: 19mm (3/4").
- Hex Size: 13/16" (21mm), Terminal Type: Removable Nut, Gap:.030" (0.75mm).
- Material: Nickel, Type: Standard, Projection: Non-Projected.
- Copper core improves resistance to fouling.
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