AC Delco 41-110 Iridium Spark Plug, Cross-Reference NGK IZTR5B11

The AC Delco 41-110 is an iridium spark plug built for outstanding strength and high temperature resistance. Its iridium construction supports better engine idle stability, quicker acceleration, and smooth overall engine performance, making it a dependable choice for engines that call for this plug's specification. The electrode uses a laser-welded design that raises the plug's melting point, helping it hold up under sustained heat cycles without breaking down prematurely. This construction also contributes to reliable cold starting, so the engine fires consistently even in cooler conditions. AC Delco applies its current spark plug technology to the 41-110 to deliver consistent ignition performance and dependable startups over the plug's service life. It is designed as a direct equivalent to the NGK IZTR5B11 and Donovan 203054 plugs, so it can be used as a replacement wherever those part numbers are specified. Buyers replacing worn plugs or servicing an engine that calls for the 41-110, IZTR5B11, or 203054 spark plug can install this part without modification.

Specifications

• Brand: AC Delco
• Manufacturer Part Number: 41-110
• UPC: 707773443538
• Type: Iridium Spark Plug
• Electrode Material: Iridium
• Construction: Laser-welded
• Weight: 0.1 pounds
• OEM Cross-Reference: Donovan 203054, NGK IZTR5B11

Replaces (OEM)

• Donovan 203054
• NGK IZTR5B11

Frequently Asked Questions

What is the AC Delco 41-110 spark plug made of? The AC Delco 41-110 uses an iridium electrode with a laser-welded construction, which raises its melting point and supports long-term durability.

Does the 41-110 cross-reference to an NGK plug? Yes, the AC Delco 41-110 is a direct cross-reference to the NGK IZTR5B11 spark plug.

Is there a Donovan equivalent to this AC Delco plug? Donovan 203054 is the cross-reference number for the AC Delco 41-110 spark plug.

How much does the 41-110 spark plug weigh? This spark plug weighs 0.1 pounds.

Will the 41-110 help with cold starting? Reliable cold starting is one of the listed benefits of the AC Delco 41-110, thanks to its iridium construction.

What performance benefits does the iridium construction provide? On the AC Delco 41-110, iridium construction is said to improve engine idle stability, support quicker acceleration, and contribute to smooth overall engine performance.

Is the AC Delco 41-110 a genuine AC Delco part? Yes, the 41-110 is manufactured and sold under the AC Delco brand, not a generic aftermarket copy.

Can the 41-110 replace an NGK IZTR5B11 plug directly? Since the AC Delco 41-110 cross-references to the NGK IZTR5B11, it can be installed as a replacement wherever that NGK number is specified.

What construction method is used on the electrode? The AC Delco 41-110 electrode is laser-welded, a construction method used to increase its melting point and reliability.

What is included when I order this spark plug? Ordering the AC Delco 41-110 gets you a single iridium spark plug of that part number.