4 Pack Autolite XP985 Iridium XP Spark Plug Solid Terminal

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 19mm (3/4")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Gap: .035" (0.9mm)

Center Electrode
Material: Iridium-Platinum
Type: Fine Wire
Size: 0.6mm
Projection: Extended Projection

Ground Electrode
Material: Platinum
Type: Standard
Shape: Taper Cut

Specifications
Resistor: Yes
Resistor Value: 4k Ohm
Heat Range: 4
Torque Specs: Cast Iron: 26-29 lb. ft. Aluminum: 15-22 lb. ft.

Part Information
Brand: Autolite
Longevity: 100k Miles