Champion 82 Spark Plug

Champion Copper Plus 82 Spark Plug

Champion Copper Plus 82 is a replacement spark plug built for dependable ignition performance and steady heat control. Its copper core electrode improves conductivity, while the nickel center and ground electrode materials support consistent wear characteristics in everyday service.

Compatible With Jeep Wrangler, Cherokee, CJ7, CJ5, J10, Wagoneer, Grand Wagoneer, and Scrambler applications that call for plug type RFN14LY and a 0.035 in gap. The Champion 82 spark plug is a direct-fit ignition service part for a wide range of Jeep secondary ignition needs.

Key Features

• Copper core electrode for improved conductivity and heat control
• Nickel center electrode tip and nickel ground electrode core material
• Pre-gapped at 0.035 in (0.89 mm)
• Resistor spark plug design
• Flat seat with 0.75 in reach and 14 mm thread diameter
• Non-removable nut terminal and 15.88 mm hex size
• Champion Copper Plus line for OE-style replacement service

Product Details

The Champion Copper Plus line focuses on straightforward ignition service with a copper core design that helps move heat away from the firing tip and maintain stable performance. Part number 82 uses the RFN14LY plug type, a 14 heat range, and a 0.035 in factory gap specification, making it a practical choice for Jeep engines that specify this configuration. This part cross-references 14GPR53 and RFN14LY for the same application.

Fits 1989-1990 Jeep Wrangler, N/A; Fits 1987-1988 Jeep Wrangler, N/A; Fits 1981-1987 Jeep J10, N/A; Fits 1981-1986 Jeep CJ7, N/A; Fits 1984-1986 Jeep Grand Wagoneer, N/A; Fits 1986 Jeep Scrambler, N/A; Fits 1981-1985 Jeep Cherokee, N/A; Fits 1981-1985 Jeep Scrambler, N/A; Fits 1981-1985 Jeep Wagoneer, N/A; Fits 1981-1983 Jeep CJ5, N/A; Fits 1983 Jeep CJ5, N/A, 150 Engine(s); VIN # U; Gap 0.035 (in); Plug Type Number RFN14LY; Copper Plus.

Common Service Issues

• Hard starting caused by worn or fouled spark plugs
• Rough idle from weak or inconsistent spark output
• Misfire complaints tied to incorrect gap or aged electrodes
• Reduced throttle response from degraded ignition performance
• Heat-related plug wear in older Jeep ignition systems

Installation Notes and Quality

Verify the engine’s required plug type, thread diameter, reach, seat style, and gap before installation. Set the gap to 0.035 in if your application calls for that specification, and confirm the terminal style matches the ignition lead or boot connection. For best results, install on a cool engine and inspect the old plug for signs of oil fouling, carbon buildup, or abnormal wear that may point to a separate engine or ignition issue.

Champion manufactures this Copper Plus spark plug as an OE-style service part for applications that specify RFN14LY. The nickel electrode construction and copper core design are intended to provide consistent conductivity and heat management in regular maintenance use.