Champion 400 Spark Plug

Reliable Spark Plug for Buick, Chevrolet, Ford, and GMC Vehicles

The Champion Copper Plus 400 spark plug is engineered to deliver consistent ignition performance for a range of vehicles including Buick, Chevrolet, Ford, and GMC models. Designed with durable materials and precise specifications, this spark plug supports efficient engine operation and reliable starts.

• Ground electrode core and center electrode tip made of nickel for durability
• Pre-set gap size of 0.035 inches (0.89 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 and reach of 0.441 inches
• Hex size of 0.625 inches (15.88 mm) for easy installation
• Removable nut electrical terminal type for versatile connection
• Manufacturer heat range rating of 9 suitable for small engine applications

About the Champion Copper Plus Product Line

The Copper Plus line from Champion focuses on spark plugs that utilize copper cores to enhance conductivity and heat dissipation. This line is designed to provide reliable ignition performance in small engine applications, making it suitable for various automotive models such as the Chevrolet Camaro, Ford Mustang, and Buick Century. The Copper Plus 400 spark plug combines copper core technology with nickel alloy electrodes to balance durability and efficient spark delivery.

Technical Details and Specifications

The Champion Copper Plus 400 spark plug features a nickel ground electrode core and center electrode tip, which contribute to its durability and consistent spark generation. The pre-gap size is factory set at 0.035 inches (0.89 mm), ensuring optimal ignition without additional adjustment. It includes a single ground electrode made from a nickel copper alloy, enhancing wear resistance. The spark plug has a tapered seat type and a thread diameter of 14 mm with a reach of 0.441 inches, making it compatible with a variety of engine designs. The resistor type design helps minimize radio frequency interference, and the removable nut terminal allows for flexible electrical connections. The hex size of 0.625 inches (15.88 mm) facilitates installation with standard tools.

Compatible Vehicles and Applications

• Buick models including Century, Skylark, and Starfire
• Chevrolet vehicles such as Camaro, Caprice, and El Camino
• Ford models including Mustang, Fiero, and S10 Blazer
• GMC trucks and SUVs like C10 Suburban, K1500 Suburban, and S10
• Other makes including Oldsmobile, Pontiac, and Acadian

Common Issues Addressed by Champion Copper Plus 400

• Engine misfires due to worn or faulty spark plugs
• Difficulty starting engines in Buick, Chevrolet, or Ford vehicles
• Reduced fuel efficiency caused by inconsistent ignition
• Rough idling or hesitation during acceleration
• Electrical interference affecting vehicle electronics

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.035 inches (0.89 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 removable nut terminal allows for easy connection to various ignition wire types. Ensure the engine is cool before replacing spark plugs to prevent thread damage. Regular inspection and replacement according to vehicle maintenance schedules will help maintain optimal engine performance.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet industry standards for ignition components. The use of nickel and copper alloy materials ensures durability and consistent performance. While specific warranty details may vary, Champion products typically come with a limited warranty against manufacturing defects. Refer to the product packaging or manufacturer documentation for exact warranty terms.