Copper Spark Plug Autolite 425

Copper Spark Plug 425
Autolite Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.

The copper core center electrode aids in thermal control and improves resistance to fouling.
Its specially engineered high nickel alloy center and ground electrode provides extended life.
The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.

Center Electrode Design: Standard
Center Electrode Tip Material: Nickel
Ground Electrode Tip Design: Not Tapered
Ground Electrode Tip Material: Nickel
Hex Size (Inch): 13/16
Thread Diameter (Millimeter): 14
Reach (Inch): 0.5
Seat Type: Gasket
Pre-Gap Size (Inch): 0.03
Manufacturer Heat Range: 8
Resistance (Ohm): 5000
Center Electrode Projection: Short Projection
Terminal Type: Removable Nut