High Thread Pro Spark Plug Autolite HT1

High Thread Pro Spark Plug Autolite HT1

High Thread Pro® plugs are an OE patented design exclusively for Ford 3V engines. Its comprehensive seal provides more durability, greater power, improved heat transfer, and a more focused ignition, ensuring your engine reaches and maintains optimal performance levels.

Engineered with a fine-wire platinum design that provides more focused ignition power and longer service life.
The ground strap provides improved heat transfer over standard J-gap plugs.
Its proprietary design improves performance for heat management, fouling resistance & increased dielectric strength.
The position of the thread above the cylinder head seating allows for a more compressive seal.
Designed with a nickel-plated shell that delivers increased protection against corrosion.

Center Electrode Design (Inch): Fine Wire
Center Electrode Tip Material (Inch): Platinum
Ground Electrode Tip Design: Not Tapered
Ground Electrode Tip Material: Nickel
Hex Size (Inch): 5/8
Thread Diameter (Millimeter): 16
Reach (Inch): 0.87
Seat Type: Tapered
Pre-Gap Size (Inch): 0.035
Manufacturer Heat Range: 11
Resistance (Ohm): 5000
Center Electrode Projection: Extra-Long Special
Terminal Type: Non Removable Nut