The ACDelco 41-110 Professional Iridium Spark Plug is designed to provide a stable spark and reliable operation when used in the manufacturer’s specified engine and calibration.

The fine-wire iridium electrode promotes ignition, starting, and engine response, with good wear resistance in compatible applications.

Compatible applications:

• Applications that specify ACDelco 41-110 or any of these part numbers: OEM 12621258.
• Compatibility depends on the make, model, year, displacement, and engine version; confirm the part number in the manual or on the installed spark plug before purchasing.

Features:

• Brand: ACDelco
• Model: 41-110
• Technology / family: Professional Iridium Spark Plug

Important: Verify the recommended part number, electrode gap, and installation torque indicated in the engine manual. A spark plug with incorrect dimensions, heat range, or calibration can affect the performance of the ignition system.