Autolite Copper Resistor Spark Plug

Autolite 4063 is a copper resistor spark plug built with OE form, fit, and function in mind. It uses a copper center electrode, nickel ground electrode, and a 5,000-ohm resistor for stable ignition performance.

• OE-style spark plug for direct replacement applications.
• Copper center electrode with nickel electrode materials.
• Resistor design helps control electrical noise.
• Short projection ceramic insulator with flat seat construction.
• Pre-gapped to 0.030 in. for installation convenience.

Fitment and Application

Compatible with Lamborghini Countach and Lamborghini Jalpa applications listed below. Fits 1974-1976 Lamborghini Countach, N/A. Fits 1981-1985 Lamborghini Countach, N/A. Fits 1982-1988 Lamborghini Jalpa, N/A. This part cross-references Champion Spark Plug 805 and Anchor 3149 for the same application.

Product Details

The Autolite Copper Resistor Spark Plug 4063 is part of Autolites copper spark plug line, which focuses on OE-style replacement geometry and everyday drivability. The tapered ground electrode tip, removable nut terminal, 14 mm thread diameter, 19.5 mm reach, and 13/16 in. hex size match common service requirements for secondary ignition maintenance on classic Lamborghini Countach and Lamborghini Jalpa models. Autolite 4063 is a practical choice when you need a spark plug that follows original-style dimensions and ignition resistance characteristics.

Common Issues Addressed

• Hard starting caused by worn or fouled spark plugs.
• Rough idle from inconsistent spark delivery.
• Reduced throttle response during acceleration.
• Ignition noise from a non-resistor plug setup.

Installation Notes

Verify thread diameter, reach, seat type, and terminal style before installation. Confirm the specified gap and check the vehicles ignition system condition during service. Use the fitment notes for OE-style terminal and gap requirements on the listed Lamborghini applications.

Quality Assurance

Autolite supplies spark plugs to the automotive aftermarket and original equipment manufacturers, with a product design centered on OE-style fit and function.