Champion 91 Spark Plug

Reliable Spark Plug for Jeep Wagoneer Vehicles

The Champion Copper Plus 91 spark plug is engineered to deliver consistent ignition performance for Jeep Wagoneer models. Designed with durable nickel and copper alloy materials, this spark plug supports efficient combustion and reliable engine operation.

• Ground electrode core and center electrode tip made of nickel for durability
• Flat seat type with a thread diameter of 14 mm (0.551 inch) for secure fitment
• Pre-gap size of 0.035 inch (0.91 mm) optimized for ignition efficiency
• Reach length of 0.438 inch and insulator height of 0.06 inch for proper combustion chamber positioning
• Non-removable nut electrical terminal type for stable connection
• Manufacturer heat range rating of 14 suitable for Jeep Wagoneer engine requirements
• Hex size of 13/16 inch (0.813 inch) for standard installation tools

About the Champion Copper Plus Spark Plug Line

The Copper Plus line from Champion features spark plugs with a copper core designed to improve heat transfer and provide reliable ignition. This line is known for its nickel alloy electrodes that offer a balance of durability and conductivity. The Copper Plus 91 spark plug is part of this series, delivering consistent performance tailored for agricultural and automotive applications, including Jeep Wagoneer vehicles.

Technical Details and Specifications

The Champion Copper Plus 91 spark plug features a single ground electrode made from a nickel copper alloy, enhancing electrode longevity and spark consistency. The center electrode tip is nickel, complementing the ground electrode for stable ignition. With a flat seat design and a thread diameter of 14 mm, this plug ensures a secure and proper fit in the combustion chamber. The pre-gap size of 0.035 inch (0.91 mm) is factory set to optimize spark efficiency and engine performance. The insulator projection and height are both 0.06 inch, supporting proper insulation and heat dissipation. This spark plug does not include a resistor, which may be suitable for specific ignition systems in Jeep Wagoneer models.

Applications and Problem Solving

• Compatible with Jeep Wagoneer models requiring a heat range 14 spark plug
• Addresses misfiring issues caused by worn or damaged spark plugs
• Helps improve cold starts and overall engine responsiveness
• Reduces fouling and electrode wear in agricultural and automotive engines
• Supports consistent combustion for smoother engine operation

Installation Notes and Tips

Ensure the spark plug gap is checked before installation, although the pre-gap is factory set at 0.035 inch (0.91 mm). Use a 13/16 inch (0.813 inch) hex socket for installation to avoid damage to the electrode or insulator. Torque the spark plug to the manufacturer’s specifications for Jeep Wagoneer vehicles to ensure proper sealing and performance. Avoid over-tightening to prevent thread damage.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet industry standards for ignition components. While specific warranty details are not provided, Champion products typically undergo rigorous quality control to ensure durability and reliable performance in compatible vehicles such as the Jeep Wagoneer.