Autolite 103 Spark Plug

Overview of Autolite Copper Resistor Spark Plug 103

The Autolite Copper Resistor Spark Plug 103 is engineered to deliver reliable ignition performance for a variety of vehicles including Ford, Audi, and Mercedes-Benz models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine operation.

• Part Number: 103
• Brand Line: Copper Resistor Spark Plug
• Ground Electrode Tip Design: Tapered
• Center Electrode Core Material: Copper
• Ground Electrode Core and Tip Material: Nickel
• Pre-Gap Size: 0.050 inches (1.30 mm)
• Hex Size: 16 mm (5/8 inch)
• Thread Diameter: 14.0 mm
• Reach: 0.679 inches (17.0 mm)
• Resistor Type: Yes
• Insulator Material: Ceramic with Mid Projection
• Electrical Terminal Type: Stud

About the Copper Resistor Spark Plug Line

The Copper Resistor Spark Plug line by Autolite is designed to provide consistent spark delivery while reducing radio frequency interference through its built-in resistor. This line features copper core electrodes for improved thermal conductivity and enhanced durability. The tapered ground electrode tip and nickel materials contribute to stable ignition and extended service life, making it suitable for a range of secondary ignition applications.

Detailed Product Description

The Autolite Copper Resistor Spark Plug 103 incorporates a copper core center electrode that improves heat dissipation and electrical conductivity, which helps maintain optimal engine performance. The tapered ground electrode tip, made of nickel, ensures precise spark gap and reliable ignition. With a pre-set gap of 0.050 inches (1.30 mm), this spark plug is ready for installation in compatible vehicles. The ceramic insulator with mid projection design provides excellent insulation and heat resistance. The 16 mm hex size and 14 mm thread diameter allow for straightforward installation and compatibility with various ignition systems.

Compatible Vehicles and Applications

This spark plug is compatible with a wide range of makes and models, including but not limited to:

• Ford F-150, Explorer, Mustang, and E-Series Econoline vans
• Audi A8 and A8 Quattro
• Mercedes-Benz 190E and other models
• Cadillac STS and XLR
• Dodge Firebird and Grand Prix
• Jaguar X-Type and XJ series
• Lincoln Navigator and Town Car
• Mazda B3000 and B4000
• Mercury Mountaineer and Mariner
• Pontiac Grand Marquis and GT
• Volvo V8 Quattro

Common Issues Addressed by This Spark Plug

• Misfiring or rough idling due to worn or fouled spark plugs
• Difficulty starting the engine in cold or damp conditions
• Reduced fuel efficiency caused by incomplete combustion
• Engine hesitation or loss of power under load
• Radio frequency interference affecting vehicle electronics

Installation Notes and Tips

• Verify the correct spark plug gap of 0.050 inches (1.30 mm) before installation
• Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage
• Ensure the spark plug threads are clean and free of debris
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Check compatibility with your specific vehicle make and model before installation

Quality Assurance and Warranty

Autolite Copper Resistor Spark Plug 103 is manufactured to meet industry standards for ignition components. The use of high-quality copper and nickel materials ensures durability and consistent performance. While specific warranty details may vary, Autolite products typically come with a limited warranty against manufacturing defects. Consult the product packaging or manufacturer for exact warranty terms.