Autolite 63 Spark Plug

Autolite 63 Copper Resistor Spark Plug

Autolite 63 is a copper resistor spark plug built for OE-style service in a wide range of import and domestic applications. It uses a copper center electrode, nickel tip materials, and a 4,000 ohm resistor to support quick starts, smooth acceleration, and steady ignition performance.

This Copper Resistor Spark Plug line is positioned as an OE-form, fit, and function replacement for everyday maintenance on vehicles such as Mitsubishi Eclipse, Volkswagen Jetta, and Honda Civic applications.

Key Features

• Part number: 63
• Copper center electrode with nickel center tip
• Nickel ground electrode with tapered tip design
• 4,000 ohm resistor for reduced electrical noise
• Pre-gapped to 0.032 in / 0.80 mm
• 14.0 mm thread diameter, 0.750 in reach, flat seat
• Ceramic insulator with mid-projection design
• Stud terminal type

Detailed Description

Autolite 63 is a standard copper spark plug designed for direct replacement service where OE-style dimensions and gap matter. The copper core helps promote reliable ignition response, while the resistor design supports cleaner electrical operation in secondary ignition systems. With a 13/16 in hex and flat seat, this plug is built for common service applications across many older and mid-era vehicles.

Fitment coverage includes long-tail searches such as 1990-1999 Mitsubishi Eclipse spark plug replacement, 1996-1999 Volkswagen Jetta copper spark plug, and 1985-1987 Honda Civic OE-style spark plug. It also appears in applications for Chevrolet Metro, Geo Metro, Porsche 944, and other vehicles listed in the fitment data. This part cross-references Champion Spark Plug 300 for the same application.

What It Helps Address

• Hard starting caused by worn spark plugs
• Rough idle from weak or inconsistent spark
• Misfire symptoms tied to aged ignition components
• Reduced throttle response during acceleration
• Routine tune-up replacement on OE-style ignition systems

Installation Notes and Tips

Verify the required gap before installation and compare it to the vehicle specification in the fitment notes. This plug is pre-gapped to 0.032 in / 0.80 mm, but some listed applications call for different gap settings, so confirm before use. Check thread diameter, reach, seat type, and terminal style against the original plug to ensure proper installation.

• Fits 1990-1999 Mitsubishi Eclipse, N/A
• Fits 1996-1999 Volkswagen Golf, N/A
• Fits 1996-1999 Volkswagen Jetta, N/A
• Fits 1985-1987 Honda Civic, N/A
• Fits 1989-1998 Hyundai Sonata, N/A
• Fits 1983-1996 Mitsubishi Mighty Max, N/A

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this spark plug is built to OE-style form, fit, and function standards for broad vehicle coverage.