Autolite AP104 Spark Plug

Autolite Platinum Spark Plug AP104 Overview

The Autolite Platinum Spark Plug AP104 is engineered for reliable ignition performance in a wide range of vehicles including Buick, Ford, Chevrolet, and Mercedes-Benz 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 with nickel core for stable spark
• Resistor type with 5000 ohms resistance to reduce electrical noise
• Mid projection ceramic insulator for optimal heat dissipation
• Standard 0.050 inch pre-gap size and 14 mm thread diameter
• Hex size 5/8 inch (16 mm) for easy installation
• Tapered seat type ensuring proper fit and seal

Detailed Features and Specifications

The Autolite Platinum Spark Plug AP104 features a platinum center electrode tip and core, which provides longer service life compared to conventional spark plugs. The ground electrode is constructed with a nickel core and a tapered tip design, promoting a stable and efficient spark. This spark plug includes a 5000 ohm resistor to minimize radio frequency interference, ensuring smooth operation of vehicle electronics.

The ceramic insulator is mid projection type, offering effective insulation and heat management. With a thread diameter of 14 mm and a reach of 0.679 inches (17.0 mm), the AP104 fits securely in compatible engines. The hex size of 5/8 inch (16 mm) allows for straightforward installation using standard tools. The tapered seat type ensures a tight seal to prevent combustion gas leaks.

Platinum Spark Plug Product Line

The Autolite Platinum Spark Plug line is designed to provide enhanced durability and consistent ignition performance. By utilizing platinum materials on the center electrode tip and core, these spark plugs offer improved wear resistance and longer service intervals compared to traditional spark plugs. The AP104 model benefits from this technology, making it suitable for vehicles requiring reliable secondary ignition components.

Compatible Vehicles and Applications

This spark plug is compatible with a variety of makes and models, including Buick, Cadillac, Chevrolet, Ford, GMC, Isuzu, Lincoln, Mazda, Mercedes-Benz, Mercury, Oldsmobile, and Pontiac. Common applications include models such as the Ford F-150, Chevrolet Camaro, Buick Century, Mercedes-Benz 300E, and Lincoln Continental.

• Resolves misfires and rough idling issues
• Improves cold start performance
• Reduces engine hesitation and stalling
• Maintains consistent spark for fuel efficiency
• Prevents radio frequency interference affecting vehicle electronics

Installation Notes and Tips

When installing the Autolite Platinum Spark Plug AP104, ensure the engine is cool to avoid damage to the threads. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to prevent over-tightening or under-tightening. Verify the pre-gap size of 0.050 inches before installation, adjusting if necessary. The 5/8 inch hex size allows for compatibility with common spark plug sockets.

Quality Assurance and Warranty

Autolite maintains strict quality control standards for the Platinum Spark Plug line, including the AP104 model. The use of premium materials such as platinum and ceramic ensures durability and reliable performance. While specific warranty details are not provided, Autolite products typically meet or exceed OEM specifications for ignition components.