Autolite APP5145 Spark Plug

Reliable Ignition Performance for Ford, Lincoln, and Mercury Vehicles

The Autolite Double Platinum Spark Plug APP5145 is engineered to deliver consistent ignition performance for a range of Ford, Lincoln, and Mercury models. Designed with durable platinum electrodes and a tapered ground electrode tip, this spark plug supports efficient combustion and long service life.

• Double platinum center and ground electrode tips for enhanced durability
• 4000 ohm resistor to reduce electrical interference
• Tapered ground electrode design with nickel core material
• Extra-long ceramic insulator for improved heat dissipation
• Standard center electrode design with platinum core and tip
• Pre-gap size of 0.054 inches (1.40 mm) for optimal spark gap
• Compatible with Ford, Lincoln, and Mercury models including Mustang, Taurus, Town Car, and more
• Hex size 5/8 inch (16 mm) with tapered seat type for secure fit

About the Autolite Double Platinum Spark Plug Line

The Double Platinum Spark Plug line from Autolite features dual platinum electrodes on both the center and ground tips. This design improves wear resistance and maintains a stable spark gap over time, which is critical for maintaining engine efficiency and reducing misfires. The APP5145 model benefits from this technology, providing reliable ignition for secondary ignition systems in select Ford, Lincoln, and Mercury vehicles.

Technical Details and Features

The APP5145 spark plug incorporates a 4000 ohm resistor to minimize radio frequency interference, ensuring smooth operation of onboard electronics. The ground electrode features a tapered tip made of platinum with a nickel core, enhancing durability and heat resistance. The center electrode also uses platinum for both the core and tip, supporting consistent spark delivery. The extra-long ceramic insulator improves heat dissipation and prevents fouling, while the tapered seat and 14 mm thread diameter ensure proper installation and sealing.

Applications and Problem Solving

• Restores proper ignition in Ford Mustang, Taurus, and Ranger models
• Reduces engine misfires and rough idling in Lincoln Continental and Mark VII
• Improves fuel efficiency and throttle response in Mercury Cougar and Sable
• Supports smooth starting and consistent combustion in Ford Town Car and Thunderbird
• Helps maintain ignition system reliability in Ford Aerostar and Windstar

Installation Notes and Tips

• Verify compatibility with your specific vehicle make and model before installation
• Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage
• Check and adjust the pre-gap size if necessary; factory pre-gap is 0.054 inches (1.40 mm)
• Inspect ignition wires and boots for wear during replacement
• Replace spark plugs in sets to maintain balanced engine performance

Quality Assurance and Warranty

Autolite spark plugs are manufactured to meet OEM standards for fit, form, and function. The APP5145 is designed for durability and consistent performance in secondary ignition systems. While specific warranty details may vary, Autolite products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.