Champion 315 Spark Plug

Reliable Ignition Performance for European Luxury Vehicles

The Champion Copper Plus 315 spark plug is engineered to deliver consistent ignition and efficient combustion for select European luxury and performance cars. Designed with durable nickel and copper alloy components, this spark plug supports smooth engine operation in models like the Jaguar XJ, Porsche 911, and Mercedes-Benz 300SE.

• Ground electrode core made of nickel for durability
• Nickel center electrode tip for reliable spark delivery
• Pre-set gap size of 0.025 inches (0.64 mm) for optimal ignition
• Flat seat type ensuring proper sealing and fit
• Thread diameter of 14 mm (0.551 inches) with 0.75-inch reach
• Hex size of 20.65 mm (0.813 inches) for standard installation tools
• Non-resistor type spark plug for direct ignition systems
• Manufacturer heat range rating of 6 suitable for moderate engine temperatures

About the Champion Copper Plus Spark Plug Line

The Copper Plus line from Champion focuses on delivering dependable ignition components with copper cores and nickel alloy electrodes. This combination enhances conductivity and wear resistance, making the Copper Plus 315 spark plug a practical choice for small engine applications in high-performance and luxury vehicles. The design balances longevity with consistent spark performance, supporting engine efficiency and smooth operation.

Technical Details and Specifications

The Champion Copper Plus 315 spark plug features a single ground electrode constructed from a nickel copper alloy, paired with a nickel center electrode tip. The pre-gap is factory set at 0.025 inches (0.64 mm), ensuring optimal spark gap for ignition without additional adjustment. The flat seat design provides a secure fit and proper sealing in the combustion chamber. With a thread diameter of 14 mm and a reach of 0.75 inches, this plug fits specific European models requiring these dimensions. The insulator height and projection are both 0.06 inches, contributing to the plug's overall installed height of 2.24 inches. This plug does not include a resistor, making it suitable for compatible ignition systems that do not require suppression.

Compatible Vehicles and Applications

• Jaguar XJ and 300D models
• Lamborghini Countach and Biturbo
• Maserati Quattroporte and 425
• Mercedes-Benz 300SE and 300SEL
• Porsche 911 series
• Rolls-Royce Silver Dawn

This spark plug is designed to address common ignition issues such as misfires, rough idling, poor fuel economy, and difficulty starting in these specific European luxury and performance vehicles.

Installation Notes and Tips

Ensure the spark plug gap is checked before installation, although the pre-gap is factory set at 0.025 inches (0.64 mm). Use a 20.65 mm (13/16 inch) socket wrench to install the plug, tightening to the manufacturer’s torque specifications to avoid damage. The flat seat design requires proper seating to prevent compression leaks. This spark plug is compatible with engines that do not require resistor-type plugs.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet OEM specifications for fit, form, and function. While specific warranty details are not provided, Champion products typically adhere to industry standards for durability and performance. Using the correct part number 315 ensures compatibility and reliable operation in the listed vehicle models.