Autolite AP24 Spark Plug

Autolite Platinum Spark Plug AP24 Overview

The Autolite Platinum Spark Plug AP24 is engineered for reliable ignition performance in a wide range of vehicles including Buick, Chevrolet, Ford, and Jeep models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Platinum center electrode tip and core for enhanced durability
• Tapered ground electrode tip made of nickel for stable spark delivery
• Resistor type spark plug with 5000 ohms resistance to reduce electrical noise
• Ceramic insulator with mid projection design for optimal insulation
• Standard 14.0 mm thread diameter and 0.433 inch reach for proper fitment
• Hex size 5/8 inch (16 mm) for easy installation
• Pre-gap size of 0.044 inches (1.10 mm) factory set for precise spark gap

Detailed Features and Specifications

The Autolite Platinum Spark Plug AP24 features a platinum center electrode tip and core, which provides longer service life compared to conventional spark plugs. The tapered nickel ground electrode tip ensures consistent spark formation and reduces electrode wear. This spark plug includes a 5000 ohm resistor to minimize radio frequency interference, protecting sensitive electronic components in your vehicle. The ceramic insulator with a mid projection design enhances heat dissipation and prevents misfires. With a 14.0 mm thread diameter and 0.433 inch reach, the AP24 is compatible with many domestic and import vehicles.

About the Autolite Platinum Spark Plug Line

The Platinum Spark Plug line from Autolite is designed to offer a balance of durability and performance. Featuring platinum on both the center electrode tip and core, these spark plugs provide extended service intervals and stable ignition under various driving conditions. The AP24 model exemplifies this line’s focus on reliable secondary ignition components suitable for a broad range of vehicles.

Compatible Vehicles and Applications

This spark plug is compatible with numerous makes and models, including Buick, Cadillac, Chevrolet, Ford, GMC, Isuzu, Jeep, Mercury, Oldsmobile, and Pontiac. Common applications include vehicles such as the Chevrolet Camaro, Ford F-150, Jeep Cherokee, Buick Century, and Pontiac Grand Prix, among others. The AP24 is suitable for engines requiring a 14 mm thread diameter and a 0.433 inch reach spark plug with a tapered seat.

• Resolves misfires caused by worn or damaged spark plugs
• Improves ignition stability in vehicles with electronic ignition systems
• Reduces radio frequency interference affecting vehicle electronics
• Helps maintain fuel efficiency by ensuring proper combustion
• Prevents electrode wear and extends spark plug service life

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.044 inches (1.10 mm) as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the tapered seat. The 5/8 inch (16 mm) hex size allows for standard spark plug socket use. Inspect the spark plug threads and cylinder head for debris before installation to ensure proper seating and prevent cross-threading.

Quality Assurance and Warranty

Autolite Platinum Spark Plugs are manufactured to meet or exceed OEM specifications for fit, form, and function. The AP24 spark plug includes a built-in resistor to protect vehicle electronics and is constructed with high-quality materials such as platinum and nickel for durability. While specific warranty details are not provided, Autolite products typically come with a limited warranty against manufacturing defects.