HT15 Autolite Spark Plugs Spark Plug

Since its inception, the Autolite ® brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. We have been in operation for over 100 years and have produced more than 11 billion spark plugs and glow plugs. Our plugs are specifically designed for each application to meet or exceed OE quality and performance. Autolite makes plugs for Japanese, European and Korean cars as well as plugs for Lawn and Garden and Power Sports. As a leading supplier of spark plugs, ignition wire sets and Coil-on-Plug boots, the Autolite brand has the right ignition products for your vehicle, regardless of make or model, import or domestic.

A Unique, Patented Design That Results In More Durability And Greater Power From A More Comprehensive Seal

Improved Heat Transfer And More Focused Ignition Power. One-Piece Ground Shield Strap For Better Heat Transfer

Insulator - High Alumina Ceramic Body. Improved Resistor For Longer Service Life

One-Piece Ground Shield Strap For Better Heat Transfer. Spark Plug Assembly - Jam Nut Is Hot-Pressed Onto The Insulator/Ground Shield

Motor Seat - Contact Area For Sealing To Engine Cylinder Head. Uses Existing Electrode Durability Enhancements Of Fine Wire Platinum Center Wire And Platinum Pad Welded To Ground Shield

Platinum Alloy Enhancement In Fine-Wire Form On Center Electrode. Patented Autolite ® Technology Creates A More Compact Design Without Degrading Mechanical Strength

Unique 10mm High Thread Design Enables More Space For Other Engine Components. Terminal Stud - Uses SAE1008 Steel With Nickel-Plated Finish

Resistor Seal - Conducting Glass-Seal Terminations And Carbon-Based Resistor

Copper-Core Center Electrode - Made With Nickel-Alloy Sheath Over A Copper Core

Limited 90 Day Warranty