Autolite APP5224 Spark Plug

Autolite Double Platinum Spark Plug Overview

The Autolite Double Platinum Spark Plug APP5224 is engineered for reliable ignition performance across a wide range of vehicles including Acura, Ford, Honda, Toyota, and Volkswagen models. Designed with durable platinum electrodes and a tapered ground electrode tip, this spark plug ensures consistent spark delivery and long service life.

• Double platinum center and ground electrode tips for enhanced durability
• Tapered ground electrode design for improved ignition efficiency
• Nickel ground electrode core material for strength
• Long projection ceramic insulator for better heat dissipation
• Flat seat type with 14.0 mm thread diameter and 0.750 inch reach
• Pre-gapped to 0.044 inches (1.10 mm) for optimal spark gap
• Resistor type spark plug with 4000 ohm resistance to reduce electrical noise
• Standard center electrode design with stud electrical terminal
• Hex size 5/8 inch (16 mm) for easy installation

Detailed Product Features and Specifications

The APP5224 spark plug from Autolite’s Double Platinum Spark Plug line features platinum tips on both the center and ground electrodes, which provide enhanced wear resistance and consistent spark performance over time. The tapered ground electrode tip design improves ignition by focusing the spark energy more precisely. The nickel core ground electrode adds mechanical strength, while the ceramic long projection insulator helps maintain proper heat range and prevents fouling. This spark plug is pre-gapped at 0.044 inches (1.10 mm), suitable for many ignition systems requiring precise gap settings. The flat seat design and 14.0 mm thread diameter with a 0.750 inch (19.5 mm) reach ensure compatibility with a variety of engines.

About the Double Platinum Spark Plug Line

Autolite’s Double Platinum Spark Plug line is designed to provide a balance of durability and performance by using platinum on both the center and ground electrodes. This dual platinum construction reduces electrode wear and maintains a stable spark gap longer than conventional plugs. The line targets vehicles requiring reliable ignition components that can withstand extended service intervals, making it suitable for many Acura, BMW, Ford, Honda, Toyota, and Volkswagen models.

Compatible Vehicles and Applications

This spark plug is compatible with a broad range of makes and models, including but not limited to Acura Accord, Ford 1500, Honda Civic, Toyota 4Runner, and Volkswagen Golf. It is ideal for secondary ignition systems in passenger cars, SUVs, and light trucks that require a 14 mm thread diameter and a 0.750 inch reach.

• Resolves misfires caused by worn or fouled spark plugs
• Improves cold start performance and throttle response
• Reduces ignition system electrical noise with built-in resistor
• Helps maintain fuel efficiency by ensuring consistent combustion
• Prevents electrode wear for longer service intervals

Installation Notes and Tips

When installing the Autolite APP5224 spark plug, ensure the spark plug gap is checked and adjusted if necessary to 0.044 inches (1.10 mm). Use a torque wrench to tighten the plug to the manufacturer’s specifications to avoid damage to the threads or improper sealing. The 5/8 inch (16 mm) hex size allows for standard spark plug socket use. Inspect the spark plug hole for debris before installation to prevent contamination.

Quality Assurance and Warranty

Autolite spark plugs are manufactured to meet OEM specifications and undergo rigorous quality control testing. The Double Platinum Spark Plug APP5224 includes a resistor to minimize radio frequency interference and is constructed with high-quality ceramic insulators for durability. While specific warranty details are not provided, Autolite products typically come with manufacturer-backed quality assurance to ensure reliable performance.