Is there a recommended interval for changing my vehicle’s spark plugs?

Yes, the interval depends on each vehicle model’s specifications. Refer to your vehicle Owner’s Manual for guidance on when you should change your vehicle’s spark plugs.

Should I change all of my vehicle’s spark plugs at the same time?

Yes, when it is time for a scheduled spark plug replacement, all spark plugs should be changed. If a single spark plug is fouled or damaged outside of scheduled maintenance, finding the source of the damage and changing it is recommended.

Can I just clean my spark plugs instead of replacing them?

No, ACDelco does not recommend cleaning old spark plugs. Cleaning spark plugs does not repair broken components, chipped insulator tips, and worn electrodes and wires.

What is pre-ignition and can it damage my engine?

Yes, pre-ignition can cause serious damage to an engine. Pre-ignition, often accompanied by engine knocking sounds, air and fuel ignite in the engine before the spark plug fires. The condition commonly occurs when old spark plugs are worn or dirty.

Does a diesel engine require a different type of plug than a gas engine?

Yes, diesel engines require glow plugs instead of spark plugs. To learn what type of glow plugs or spark plugs your vehicle requires, refer to your vehicle Owner’s Manual for guidance.

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ACDelco 41-122 Professional Iridium Spark Plug (Pack of 1)

Product ID: 389352069

Details

Brand
ACDelco
Core material
Iridium
Thread size
14mm
Top material type
Iridium
Vehicle service type
Car

⚡Smaller electrode design for quicker acceleration

🔥Iridium fine-wire electrode for superior ignition

⏱️Improved cold start performance

€ 31.57

Duties & taxes included

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Description

⚡ Ignite your drive with precision and power!

PERFECT OEM FIT - Engineered to match your vehicle’s original specs flawlessly
DURABILITY THAT LASTS - Highest melting point metal for unmatched wear resistance
FUEL ECONOMY CHAMPION - Self-cleaning tip burns carbon deposits for better mileage
PRECISION IGNITION POWER - Iridium electrode ensures stable engine idle and smooth rides
RAPID ACCELERATION BOOST - Compact electrode design accelerates your drive instantly

The ACDelco 41-122 Professional Iridium Spark Plug delivers advanced iridium technology for enhanced engine stability, quicker starts, and improved fuel efficiency. Engineered for durability and exact OEM fit, it’s the smart upgrade for drivers seeking reliable performance and long-lasting value.

Specifications

ASIN	B00DU2530W
Automotive Fit Type	Vehicle Specific Fit
Brand Name	ACDelco
Compatible with Vehicle Type	Car
Core Material	Iridium
Country of Publication	USA
Customer Reviews	4.4 4.4 out of 5 stars (311)
Included Components	Spark Plug
Item Type Name	Iridium Plugs - GM,Iridium Plugs - GM
Manufacturer	GM GENUINE PARTS
Manufacturer Part Number	12681655
Model Number	41-122
Number of Items	1
Number of Packs	1
OEM Equivalent Part Number	55585534
Thread Size	14mm
Top Material Type	Iridium
UPC	808709616856
Unit Count	1 Count

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