Champion 337 Spark Plug

Reliable Spark Plug for Cadillac, Chevrolet, Saab, and Volvo Vehicles

The Champion Copper Plus 337 spark plug is engineered to deliver consistent ignition performance for select Cadillac, Chevrolet, Saab, and Volvo models. Designed with durable nickel electrodes and a precise pre-gap, this spark plug supports efficient combustion and engine reliability.

• Ground electrode tip design: J gap for stable spark
• Nickel center and ground electrode materials for durability
• Non-removable nut electrical terminal type
• Pre-gap size of 0.030 inches (0.75 mm) for optimal ignition
• Flat seat type with 0.75 inch reach and 14 mm thread diameter
• Resistor type spark plug to reduce electrical interference
• Hex size of 0.625 inches (15.88 mm) for easy installation
• Manufacturer heat range rating of 8 for balanced heat dissipation

Champion Copper Plus Product Line Overview

The Copper Plus line from Champion focuses on spark plugs that combine copper core technology with nickel electrodes to provide reliable ignition and consistent performance. This line is designed to meet the demands of various ignition systems, offering a balance of conductivity and durability. The Copper Plus 337 spark plug is part of this line, ensuring compatibility and dependable operation in compatible vehicles.

Technical Details and Compatibility

The Champion Copper Plus 337 spark plug features a single ground electrode with a J gap design, which helps maintain a stable spark for efficient combustion. Both the center and ground electrodes use nickel material, providing resistance to wear and corrosion. The spark plug includes a non-removable nut electrical terminal and a flat seat type, ensuring proper fitment and sealing in the combustion chamber. With a thread diameter of 14 mm and a reach of 0.75 inches, it is engineered to fit specific engine configurations.

Compatible Vehicles and Applications

This spark plug is compatible with a range of Cadillac, Chevrolet, Saab, and Volvo models, including but not limited to:

• Cadillac ELR
• Chevrolet Cruze Limited
• Saab 900 and 9000
• Volvo C70, S40, S60, S70, S80, S90, V40, V70, XC70, XC90

Common Issues Addressed by Champion Copper Plus 337

• Misfires caused by worn or damaged spark plugs
• Reduced fuel efficiency due to inconsistent ignition
• Hard starting or rough idling in compatible vehicles
• Engine hesitation during acceleration
• Electrical interference affecting ignition system performance

Installation Notes and Tips

When installing the Champion Copper Plus 337 spark plug, ensure the pre-gap is set to 0.030 inches (0.75 mm) as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid damage to the threads or improper sealing. The hex size of 0.625 inches (15.88 mm) allows for standard spark plug socket compatibility. Always inspect the ignition system components for wear or damage during replacement.

Quality Assurance and Warranty

Champion spark plugs, including the Copper Plus 337, are manufactured to meet strict quality standards for ignition components. The resistor type design helps reduce electrical noise, protecting sensitive vehicle electronics. While specific warranty details may vary, Champion products typically come with manufacturer-backed quality assurance to support reliable performance in compatible Cadillac, Chevrolet, Saab, and Volvo vehicles.