Autolite HT1 Spark Plug

Autolite Platinum Spark Plug HT1 Overview

The Autolite Platinum Spark Plug HT1 is engineered for reliable ignition performance in select Ford, Lincoln, and Mercury vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Platinum center electrode tip for enhanced durability
• Fine wire copper core center electrode for improved conductivity
• Tapered ground electrode tip made of nickel for stable spark
• Extra-long special ceramic insulator for heat resistance
• Resistor type with 5000 ohms resistance to reduce electrical noise
• Compatible with Ford Expedition, Explorer, F-150, and other models
• Pre-gapped at 0.035 inches for optimal ignition
• Thread diameter of 16.0 mm and reach of 0.750 inches

Detailed Product Features and Specifications

The Autolite Platinum Spark Plug HT1 features a platinum tip on the center electrode, which enhances wear resistance and maintains a stable spark over time. The fine wire copper core center electrode improves electrical conductivity, contributing to efficient combustion. The ground electrode is tapered and constructed from nickel, providing durability and consistent spark gap performance. This spark plug includes a resistor with 5000 ohms resistance to minimize radio frequency interference, ensuring smooth operation of vehicle electronics.

The insulator is made from extra-long special ceramic material, designed to withstand high temperatures and prevent misfires. The spark plug has a tapered seat type and a stud-type electrical terminal. With a hex size of 9/16 inches (14 mm), thread diameter of 16.0 mm, and a reach of 0.750 inches (19.5 mm), it fits securely in the combustion chamber.

About the Autolite Platinum Spark Plug Line

The Platinum Spark Plug line from Autolite is designed to provide enhanced durability and consistent ignition performance. By incorporating platinum on the center electrode tip and a fine wire copper core, these spark plugs offer improved wear resistance and electrical conductivity compared to standard plugs. The HT1 model is part of this line, tailored for specific Ford, Lincoln, and Mercury vehicles requiring precise fitment and reliable ignition components.

Compatible Vehicles and Common Applications

• Ford Expedition
• Ford Explorer and Explorer Sport Trac
• Ford F-150, F-250 Super Duty, F-350 Super Duty
• Lincoln Mark LT and Navigator
• Mercury Mountaineer

This spark plug is suitable for addressing issues such as engine misfires, rough idling, poor fuel economy, hard starting, and reduced engine power in these vehicles.

Installation Notes and Tips

• Verify compatibility with your vehicle’s make, model, and engine specifications before installation.
• Use a torque wrench to tighten the spark plug to manufacturer-recommended torque settings to avoid damage.
• Check and adjust the spark plug gap if necessary; the pre-gap is set at 0.035 inches.
• Inspect the spark plug threads and clean the cylinder head threads before installation.
• Replace spark plugs in sets to maintain consistent engine performance.

Quality Assurance and Warranty

Autolite Platinum Spark Plugs are manufactured to meet OEM standards for fit, form, and function. The HT1 spark plug undergoes rigorous quality control to ensure durability and reliable ignition performance. While specific warranty details are not provided, Autolite products typically come with manufacturer-backed quality assurance to support vehicle maintenance needs.