Champion 438 Spark Plug

Reliable Ignition Performance for Dodge and Jeep Vehicles

The Champion Copper Plus 438 spark plug is engineered to deliver consistent ignition performance for a range of Dodge and Jeep models. Designed with durable nickel electrodes and a precise pre-gap, this spark plug supports efficient combustion and reliable engine operation.

• Ground electrode core and center electrode tip made of nickel for durability
• Pre-set gap size of 0.035 inches (0.90 mm) for optimal spark
• Flat seat type with a 0.75-inch reach and 14 mm thread diameter
• Non-removable nut electrical terminal for secure connection
• Resistor type spark plug to reduce electrical interference
• Heat range rating of 12 suitable for various engine conditions
• Hex size of 0.625 inches (15.88 mm) for easy installation

About the Champion Copper Plus Spark Plug Line

The Copper Plus line from Champion is designed to provide dependable ignition with copper core technology. This line focuses on delivering consistent spark and heat dissipation, which helps maintain engine efficiency and performance. The 438 spark plug is part of this line, offering a balance of durability and reliable ignition for secondary ignition systems in compatible vehicles.

Technical Details and Specifications

The Champion Copper Plus 438 spark plug features a nickel ground electrode core and center electrode tip, which provide resistance to wear and corrosion. The pre-gap is factory set at 0.035 inches (0.90 mm), ensuring optimal spark gap for ignition. It has a flat seat design with a reach of 0.75 inches and a thread diameter of 14 mm (0.551 inches), making it compatible with specific Dodge and Jeep engines. The spark plug includes a resistor to minimize radio frequency interference and a non-removable nut electrical terminal for secure attachment. Its heat range is rated at 12, suitable for maintaining proper operating temperatures in the ignition system.

Compatible Vehicles and Applications

• Dodge Ram 1500
• Dodge Dakota
• Dodge Viper
• Jeep Cherokee
• Jeep Grand Cherokee
• Jeep Wrangler
• Jeep TJ

This spark plug is designed for secondary ignition systems in these models, ensuring reliable engine starts and smooth operation.

Common Issues Addressed by Champion Copper Plus 438

• Engine misfires due to worn or damaged spark plugs
• Reduced fuel efficiency from inconsistent ignition
• Difficulty starting the engine in cold or damp conditions
• 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 (0.90 mm) as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 0.75-inch reach and 14 mm thread diameter must match the engine specifications for proper fitment. Ensure the electrical terminal is securely connected to maintain consistent ignition performance.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet OEM standards for fit, form, and function. The use of nickel electrodes and a resistor design supports long-term durability and reliable ignition. While specific warranty details may vary, Champion products typically come with a limited warranty against manufacturing defects. Consult product documentation or the manufacturer for exact warranty terms.