Autolite 353 Spark Plug

Autolite 353 Copper Spark Plug Overview

The Autolite Copper Non-Resistor Spark Plug 353 is built for quick starts, steady combustion, and smooth throttle response. It uses a copper center electrode with nickel tip materials and a standard regular design for OE-style service in a wide range of foreign and domestic engines.

For drivers searching for an Autolite 353 spark plug or a copper spark plug replacement for Honda Civic, this part delivers the OE form, fit, and function expected from the Autolite Copper Spark Plug line.

Key Features

• Copper center electrode core for reliable ignition performance
• Non-resistor design for applications that require a no-resistor spark plug
• Nickel center and ground electrode tip materials
• Tapered ground electrode tip design with one ground electrode
• Pre-gapped to 0.030 in. / 0.80 mm
• 14.0 mm thread diameter, 0.374 in. reach, flat seat
• Ceramic short insulator with removable nut terminal

Autolite Copper Non-Resistor Line

The Autolite Copper Non-Resistor Spark Plug line focuses on OE-style replacement coverage with practical ignition performance. These plugs are commonly selected when the application calls for a copper-core, non-resistor spark plug that matches factory-style dimensions and terminal configuration.

Detailed Description

Autolite 353 is a copper spark plug engineered around standard ignition service requirements. The copper center electrode supports consistent spark delivery, while the nickel tip materials and tapered ground electrode help maintain stable firing characteristics. With a 13/16 in. hex, flat seat, and short ceramic insulator, this spark plug follows common OE packaging dimensions for straightforward replacement service. It is a direct-fit style choice for owners looking for an Autolite 353 replacement spark plug for Honda Civic and other applications that specify this configuration.

This part cross-references AMS Automotive 4027 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Reduced throttle response from degraded spark performance
• Misfire conditions tied to plug wear or incorrect plug type
• Service intervals where an OE-style copper plug is specified

Installation Notes and Tips

Verify thread diameter, reach, seat type, and terminal style before installation. The Autolite 353 uses a 14.0 mm thread, 0.374 in. reach, flat seat, and removable nut terminal, so it should be matched to the engine’s original spark plug specification. Check the pre-gap against the vehicle service information before installing, and inspect ignition wires or coil boots for wear at the same time.

For fitment-based searches, use the exact vehicle application data provided by the catalog. This part is commonly searched as an Autolite 353 spark plug for Honda Civic service where the OE-style dimensions match the engine requirement.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment channels, and this spark plug is built to OE-style form, fit, and function standards for specified applications.