Autolite APP104 Spark Plug

Autolite Double Platinum Spark Plug Overview

The Autolite Double Platinum Spark Plug APP104 is engineered for reliable ignition performance in a wide range of vehicles including Buick, Ford, Chevrolet, and Mazda 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 with nickel core for improved ignition
• Standard electrical terminal type: stud
• Pre-gapped to 0.050 inches (1.30 mm) for optimal spark efficiency
• Ceramic mid-projection insulator for excellent heat dissipation
• Resistor type spark plug with 5000 ohms resistance to reduce electrical noise
• Compatible with multiple makes and models including Ford F-150, Chevrolet Camaro, and Mazda MPV

Double Platinum Spark Plug Product Line Details

The Autolite Double Platinum Spark Plug line features spark plugs with platinum on both the center and ground electrode tips. This design provides improved wear resistance and longer service intervals compared to conventional spark plugs. The APP104 model benefits from this technology, offering consistent ignition performance and reduced electrode erosion, making it suitable for vehicles requiring reliable secondary ignition components.

Technical Specifications and Features

The APP104 spark plug incorporates a tapered ground electrode tip made from platinum over a nickel core, which enhances ignition reliability and electrode longevity. The center electrode is constructed with a platinum core and tip, providing stable spark generation. The spark plug features a 16 mm (5/8 inch) hex size and a 14 mm thread diameter with a 0.679 inch (17.0 mm) reach, ensuring proper fitment in compatible engines. The ceramic insulator is mid-projection type, designed to withstand high temperatures and electrical stress. Additionally, the resistor type design with 5000 ohms resistance helps minimize radio frequency interference.

Compatible Vehicles and Applications

• Buick models including Century and LeSabre
• Ford trucks and SUVs such as F-150, Explorer, and Expedition
• Chevrolet vehicles including Camaro, Cavalier, and S10
• Mazda MPV and B-series trucks
• Other makes like Cadillac, Lincoln, Mercury, and Pontiac

Common Issues Addressed by Autolite APP104

• Misfires caused by worn or corroded spark plugs
• Reduced fuel efficiency due to inconsistent ignition
• Hard starting or rough idling in compatible vehicles
• Engine hesitation or power loss under load
• Electrical interference affecting onboard electronics

Installation Notes and Tips

Before installation, verify the spark plug gap is set to the specified 0.050 inch (1.30 mm) pre-gap size. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque specification to avoid damage to the tapered seat. Ensure the spark plug threads are clean and free of debris. The stud-type electrical terminal requires compatible ignition wires or boots for proper connection. It is recommended to replace spark plugs in sets for balanced engine performance.

Quality Assurance and Warranty

Autolite spark plugs are manufactured to meet OEM specifications and undergo rigorous quality control testing. The Double Platinum Spark Plug APP104 is designed for durability and consistent performance. While specific warranty details may vary, Autolite typically offers coverage against manufacturing defects. Consult vehicle and product documentation for exact warranty terms.