Autolite 216 Spark Plug

Autolite Copper Non-Resistor Spark Plug 216

Autolite 216 is a copper non-resistor spark plug built for OE-style ignition performance in classic and vintage applications. It uses a copper center electrode, nickel ground electrode, and a 0.030-inch pre-gap to support quick starts, steady combustion, and smooth throttle response.

The Autolite Copper Spark Plug line focuses on OE form, fit, and function for a wide range of domestic and foreign vehicles. Part number 216 follows that approach with a flat seat, stud terminal, 14 mm thread diameter, 13/16-inch hex, and ceramic insulator construction for direct replacement service.

Key Features

• Copper center electrode with nickel tip materials for consistent ignition performance
• Non-resistor design for applications that call for a resistor-free spark plug
• Pre-gapped at 0.030 inch / 0.80 mm
• Flat seat, 14 mm thread diameter, and 0.433-inch reach
• 13/16-inch hex size with stud terminal connection
• Single ground electrode with tapered tip design
• Ceramic insulator with short insulator type

Application Details

Autolite 216 is a direct-fit style spark plug for older ignition systems that require a copper non-resistor plug. Compatible With 1953-1955 Ford F-100, F-250, and F-350 spark plug applications, as well as 1941-1942 Chrysler Town & Country and New Yorker models, this plug also matches select Lincoln Zephyr, Continental, and Jeep Wagoneer applications. The part number 216 is also referenced in classic vehicle service listings for these OE-style setups.

This part cross-references Champion Spark Plug 512 for the same application.

What It Helps Address

• Hard starting in older ignition systems that specify a copper non-resistor plug
• Rough idle caused by worn or incorrect spark plug specifications
• Weak throttle response from plugs that do not match OE-style heat and gap requirements
• Misfire concerns related to incorrect terminal, reach, or seat type
• Service issues on classic Ford, Chrysler, Lincoln, and Jeep applications

Installation Notes and Tips

Verify thread diameter, reach, seat type, and terminal style before installation. Confirm the specified gap for the vehicle application and adjust only if the service manual calls for it. Use the correct torque procedure for the cylinder head material, especially on vintage aluminum-head applications.

For fitment, this plug is listed for 1953-1955 Ford F-100, F-250, and F-350; 1941-1942 Chrysler Town & Country and New Yorker; 1942 Lincoln Continental and Zephyr; 1936-1939 Lincoln Zephyr; 1937 Chrysler Imperial; and 1965-1966 Jeep Wagoneer.

Quality Assurance

Autolite positions this copper spark plug line as an OE-style replacement option for a broad range of makes and models. Part number 216 is built to match the form, fit, and function expected in service applications that specify a non-resistor copper plug.