Champion 347 Spark Plug

Reliable Ignition Performance for Dodge, Jeep, Lexus, and More

The Champion Copper Plus 347 spark plug is engineered to deliver consistent ignition performance for a variety of vehicles including Dodge Ram 1500, Jeep Grand Cherokee, Lexus IS300, and Toyota Camry. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Ground electrode tip design: J gap for stable spark delivery
• Nickel center and ground electrode materials for durability
• Pre-set gap size of 0.030 inches for optimal ignition
• Flat seat type ensuring proper sealing and fit
• Resistor type spark plug to reduce electrical interference
• Thread diameter of 14 mm and reach of 0.75 inches for correct installation
• Non-removable nut electrical terminal for secure connection
• Hex size 5/8 inch (15.88 mm) for standard tool compatibility

Champion Copper Plus Product Line Overview

The Copper Plus line from Champion focuses on delivering spark plugs with copper cores that enhance conductivity and heat dissipation. The 347 spark plug benefits from this technology by providing reliable ignition and improved engine responsiveness. Copper Plus plugs are designed to meet OEM specifications, making them suitable for a range of vehicles such as the Pontiac G3 Wave and Volkswagen EuroVan.

Technical Details and Specifications

This Champion spark plug features a nickel copper alloy ground electrode and a nickel center electrode tip, both contributing to long-lasting performance. The J gap design supports consistent spark formation, while the 0.75-inch reach and 14 mm thread diameter ensure compatibility with specific engine configurations. The insulator height of 0.117 inches and flat seat type help maintain proper combustion chamber sealing. Additionally, the resistor built into the plug reduces radio frequency interference, protecting vehicle electronics.

Applications and Common Issues Addressed

• Restores smooth engine starting in Dodge Ram 1500 and Jeep Liberty
• Improves fuel efficiency and reduces misfires in Lexus GS300 and IS300
• Helps resolve rough idling and hesitation in Toyota Avalon and Camry
• Supports consistent ignition in Volkswagen EuroVan and Pontiac G3 Wave
• Maintains engine performance in off-road conditions for Jeep Commander and Nitro

Installation Notes and Tips

• Verify correct spark plug gap of 0.030 inches before installation
• Use a 5/8 inch (15.88 mm) socket wrench for proper torque application
• Ensure the flat seat type matches the engine’s cylinder head design
• Apply anti-seize compound sparingly on threads if recommended by vehicle manufacturer
• Check for proper reach of 0.75 inches to avoid engine damage

Quality Assurance and Warranty

Champion Copper Plus spark plugs, including part number 347, are manufactured to meet strict quality standards. The use of nickel and copper materials ensures durability and consistent performance. While specific warranty details vary by retailer, Champion products typically come with a limited warranty against manufacturing defects. Always consult vehicle service manuals and follow recommended maintenance schedules for optimal results.