Champion 408 Spark Plug

Reliable Ignition with Champion Copper Plus Spark Plug 408

The Champion Copper Plus Spark Plug 408 is engineered to deliver consistent ignition performance for a range of vehicles including Buick, Chevrolet, Ford, Mazda, and Mercedes-Benz models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Ground electrode core and center electrode tip made of nickel for durability
• Pre-set gap size of 0.045 inches (1.13 mm) for optimal spark
• Single ground electrode constructed from nickel copper alloy
• Resistor type spark plug to reduce electrical interference
• Tapered seat type with a thread diameter of 14 mm (0.551 inch)
• Hex size of 15.88 mm (0.625 inch) for easy installation
• Manufacturer heat range rating of 14 suitable for various engine conditions
• Non-removable nut electrical terminal type for secure connection

Detailed Features and Specifications

The Champion Copper Plus 408 spark plug features a nickel ground electrode core and center electrode tip, providing reliable conductivity and resistance to wear. The single ground electrode is made from a nickel copper alloy, enhancing durability under high-temperature conditions. With a pre-gap size of 0.045 inches (1.13 mm), this spark plug is ready for installation without additional adjustment. The tapered seat ensures a tight fit in the combustion chamber, while the 14 mm thread diameter and 0.689 inch reach accommodate a variety of engine designs. The resistor type construction helps minimize radio frequency interference, protecting vehicle electronics. The insulator height and projection are precisely engineered to maintain optimal spark performance.

Champion Copper Plus Product Line Overview

The Copper Plus line from Champion is designed to provide dependable ignition components with copper core technology. This product line focuses on delivering consistent spark performance and durability by utilizing copper and nickel materials in electrode construction. The Copper Plus spark plugs are suitable for a wide range of domestic and import vehicles, including models from Buick, Chevrolet, Ford, Mazda, and Mercedes-Benz, ensuring compatibility and reliable operation.

Compatible Vehicles and Common Applications

• Buick models such as Century, LeSabre, and Lucerne
• Chevrolet vehicles including Malibu, Impala, and Monte Carlo
• Ford trucks and cars like F-150, Mustang, and Fiesta
• Mazda MPV and B2500
• Mercedes-Benz 260E, 300CE, and 300TE

Issues Addressed by Champion Copper Plus Spark Plug 408

• Misfiring or rough engine idle
• Difficulty starting the engine
• Reduced fuel efficiency due to incomplete combustion
• Engine hesitation or loss of power under load
• Electrical interference affecting vehicle electronics

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.045 inches (1.13 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 non-removable nut electrical terminal requires a compatible ignition wire connector. Inspect the spark plug threads and combustion chamber for debris before installation to ensure proper seating and performance.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet OEM specifications and undergo rigorous quality control testing. The part number 408 is backed by Champion’s commitment to durability and performance. While specific warranty details may vary, Champion typically offers coverage against manufacturing defects to ensure customer confidence in their ignition components.