Autolite 3136 Spark Plug

Overview

Autolite 3136 is a copper non-resistor spark plug built for OE-style form, fit, and function. It is a practical replacement choice for classic ignition systems that call for a 10 mm plug with a 0.034 in. pre-gap and a flat seat.

Compatible with a wide range of vintage Chevrolet, Cadillac, Volvo, Packard, Lagonda, and LaSalle applications, this spark plug supports reliable starting and steady ignition performance. The Autolite 3136 part number is also referenced in interchange listings for select applications.

Key Features

• Copper center electrode for responsive ignition performance.
• Non-resistor design for applications that specify a non-resistor plug.
• Tapered nickel ground electrode with a single ground electrode.
• Ceramic short insulator for traditional spark plug construction.
• Removable nut terminal for flexible connection style.
• OE-style replacement with a flat seat and standard 10 mm thread.

Detailed Description

Autolite 3136 is engineered as an OE-style spark plug for older vehicles that require a copper, non-resistor design. Its 0.250 in. reach, 5/8 in. hex, and 0.034 in. pre-gap align with common classic-engine specifications, while the nickel-tipped electrodes and ceramic insulator support consistent spark delivery. This part number is a fitment match for many Chevrolet, Cadillac, and Volvo models from the 1939-1961 range, including Fits 1946-1948 Chevrolet Fleetmaster, N/A and Fits 1950-1961 Volvo 444, N/A.

Autolite positions this spark plug as an OE-form replacement for domestic and foreign applications, and the brand’s aftermarket and OEM presence adds confidence for buyers restoring or maintaining original ignition setups. The Autolite 3136 is a straightforward choice when the engine calls for a copper non-resistor spark plug with classic dimensions and OE-style construction.

This part cross-references Hayden 526 for the same application.

What It Helps Solve

• Hard starting caused by worn or incorrect spark plugs.
• Rough idle from inconsistent spark delivery.
• Misfire concerns in engines that require a non-resistor plug.
• Loss of throttle response from degraded ignition performance.
• Fitment issues when replacing an OE-style classic spark plug.

Installation Notes

Verify thread diameter, reach, seat type, and gap before installation. This plug uses a removable nut terminal and a flat seat, so confirm the ignition lead connection and cylinder head specification match the engine requirements. For best results, set the gap to the engine’s specified value before installation.

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.