This listing includes:

Four x 6215 Spark Plug Pre-Gapped

Shell
Thread Size: 12mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Resistor: Yes
Resistor Value: 5K Ohm
Reach: 26.5mm (1.04")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .043" (1.1mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Extended Projection
Ground Electrode
Material: Platinum
Type: Standard
Shape: Taper Cut
Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.