ACDelco Professional Iridium Spark Plug

The ACDelco Professional Iridium Spark Plug line gives you reliable ignition performance and long service life. Each plug has an iridium center electrode for consistent firing. Use these plugs as a replacement for worn spark plugs in many gasoline engines.

Key Features:

• Iridium center electrode: Iridium is a hard, durable metal that resists electrode wear. This helps the plug keep a stable spark gap over time.
• Fine-wire design: A fine center electrode helps the plug ignite the air-fuel mixture efficiently. This supports smooth starts and steady idle.
• Long service life: Iridium construction is intended to last longer than conventional copper spark plugs, so replacements are needed less often.
• Professional-grade quality: ACDelco is General Motors' original equipment parts brand. The line is built for dependable, consistent performance.
• Good for engine performance: A properly working spark plug helps with throttle response, fuel efficiency and emissions control.

Each plug in this line is made as a direct-fit replacement. Choose the correct part number for your engine to get the right heat range, thread size and reach.