High Thread Pro
High-thread-group

Autolite High Thread Pro® Spark Plugs

You'll get more durability, greater power, improved heat transfer and more focused ignition power thanks to a unique, patented design that forms a more comprehensive seal. Copper core center electrode a nickel-alloy sheath.

  • OE DESIGN EXCLUSIVELY FOR FORD 3V ENGINES
  • The space-saving benefits of a 10mm spark plug with the durability of a 14mm plug
  • Better heat transfer than a standard J-gap design
  • Easier installation because pre-gapped plugs do not require pre-adjustment
  • Finewire design for more focused ignition power and longer service life
  • High Strength Shell to avoid breakage issues
  • Thread positioned above cylinder head seating for a more compressive seal
  • Robust ceramic body reduces the chance of dielectric punctures
  • Nickel-plated shell for improved corrosion protection
Autolite highly recommends that you consult with your vehicle’s owner’s manual for any specific instructions for changing the spark plugs. Engines can vary widely by make and model. These instructions should be considered for general guidance only.
Replacing spark plugs can be a simple job, if you take things one step at a time. Given a basic understanding of mechanical matters, here's a guide to the proper procedures in changing spark plugs.

  • Insulator - High alumina ceramic body
  • Spark Plug Assembly - Jam nut is "hot-pressed" onto the insulator/ground shield
  • Motor Seat - Contact area for sealing to engine cylinder head
  • Platinum alloy enhancement in "fine-wire" form on center electrode
  • Terminal Stud - Uses SAE1008 steel with nickel-plated finish
  • Jam Nut - 9/16" hex with 16 x 1.5-mm thread, nickel-plated steel
  • Resistor Seal - Conducting glass-seal terminations and carbon-based resistor
  • Copper-Core Center Electrode - Made with nickel-alloy sheath over a copper core (2.16-mm diameter)
Part # Application
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
Part # Application
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
--Part #-- --Application-- Learn More
Autolite_bottom-callout_bolt

Create An Autolite Account

Register today for access to special offers and exclusive content.