Iridium Spark Plug | AC Delco 41-110

Swap your boat engine spark plugs annually for the same plugs trusted and recommended by GM. The AC Delco 41-110 Spark Plug is an OE part for many GM LS marine engines, and it’s also an aftermarket replacement for other boat engines and some vehicle power plants. It uses an iridium fine-wire electrode that reduces carbon deposit buildup, giving you a more powerful, complete and consistent spark. The efficiency gives boat engines better cold starting, more stable idling and excellent acceleration. ACDelco 41-110 plugs also have a suppressor seal with meters that boost spark energy and obstruct certain radio frequencies known to affect car and boat electronics.

With strong wear resistance and a high melting point, the AC Delco 41-110 is an excellent spark plug to power any high-performance marine application. Check the part number below against your service manual for compatibility or contact us with questions. We sell these plugs as singles so you can order the exact amount you need while still getting a great price and fast same-day shipping.

AC Delco 41-110 Iridium Spark Plug Features:

• Iridium AC Delco spark plug is used in GM LS engines.
• It provides stable idling and smooth performance.
• It provides more complete combustion and outstanding longevity.
• Original equipment for a variety of marine engine manufacturers.
• Replaces AC Delco part #12621258
• It will also replace AC Delco 41-162 plugs
• Thread Size: 14mm
• Thread Pitch: 1.25mm
• Reach: 0.68 inches (17.5mm)
• Gap: 0.04 inches (1mm)
• Hex Size: 5/8 inches (16mm)
• Resistor: Yes (4-7.5k ohm)
• Tapered seat