Champion 406 Spark Plug

Reliable Ignition with Champion Copper Plus Spark Plug 406

The Champion Copper Plus 406 spark plug is engineered to deliver consistent ignition performance for a wide range of vehicles including Buick, Chevrolet, Ford, and Jeep models. Designed with durable nickel and copper alloy materials, this spark plug supports efficient combustion and engine reliability.

• Ground electrode core made of nickel for durability
• Nickel center electrode tip for reliable spark delivery
• Pre-gapped to 0.040 inches (1.03 mm) for optimal ignition
• Resistor type spark plug to reduce electrical interference
• Tapered seat and 0.551 inch (14 mm) thread diameter for secure fit
• Heat range 12 suitable for various engine conditions
• Hex size 0.625 inch (15.875 mm) for easy installation

Detailed Features and Specifications

The Champion Copper Plus 406 spark plug features a single ground electrode constructed from a nickel copper alloy, providing a balance of conductivity and wear resistance. The center electrode tip is made of nickel, ensuring consistent spark generation. With a pre-gap size of 0.040 inches (1.03 mm), this plug is ready for installation without additional adjustment. The spark plug includes a non-removable nut electrical terminal type and a resistor to minimize radio frequency interference. Its tapered seat and 0.441 inch reach ensure proper sealing and fitment in compatible engines. The insulator height and projection are both 0.06 inches, contributing to stable ignition performance. This plug is classified under the Champion Copper Plus line, known for copper core technology that supports efficient heat transfer and reliable spark delivery.

Champion Copper Plus Product Line Overview

The Copper Plus line from Champion is designed to provide dependable ignition performance using copper core technology. Copper cores improve heat dissipation compared to standard plugs, which helps maintain optimal operating temperatures and reduces fouling. The Copper Plus spark plugs are engineered to meet the demands of various vehicles, including many Buick, Chevrolet, Ford, and Jeep models, making them a practical choice for secondary ignition needs.

Compatible Vehicles and Applications

• Buick models such as Century, Regal, and Skylark
• Chevrolet trucks and SUVs including Blazer, Tahoe, and Silverado series
• Ford vehicles like F-150, Bronco, and Mustang
• Jeep models including Cherokee and Wagoneer
• Other makes including Cadillac, GMC, Mercury, Oldsmobile, and Pontiac

Common Issues Addressed by Champion Spark Plug 406

• Engine misfires and rough idling
• Difficulty starting the engine
• Poor fuel efficiency due to incomplete combustion
• Reduced engine power and acceleration
• Excessive exhaust emissions

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.040 inches (1.03 mm) as specified. Use a torque wrench to tighten the plug to the manufacturer’s recommended torque to avoid damage to the tapered seat. The 0.625 inch (15.875 mm) hex size allows for standard spark plug socket use. Ensure the spark plug threads match the engine’s 14 mm diameter and 0.551 inch reach for proper fit. Replace spark plugs in sets to maintain consistent engine performance.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet OEM specifications for fit and function. The use of nickel and copper alloy materials supports durability and reliable ignition. While specific warranty details are not provided, Champion products typically adhere to industry standards for quality and performance.