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 Professional 41-110 (12621258) Iridium Spark Plug (Pack of 1)

ACDelco Professional 41-110 (12621258) Iridium Spark Plug (Pack of 1)

Product ID: 37133923

Details

Brand
ACDelco
Core Material
Iridium
Thread Size
M14x1.25
Top Material Type
Iridium
Vehicle Service Type
Truck

⏳100,000 miles warranty

🔥Iridium core for max durability

⚙️Exact OEM fit & function

R487

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your drive with iridium power — because your truck deserves the best!

UNMATCHED LONGEVITY - Iridium's ultra-high melting point means your spark plug outlasts platinum and conventional types.
HEAVY DUTY DURABILITY - Built to withstand tough truck conditions with superior wear resistance and strength.
CONSISTENT PERFORMANCE - Delivers reliable ignition and optimal combustion for smoother rides and better fuel efficiency.
PEACE OF MIND WARRANTY - Backed by a 100,000-mile parts-only warranty to keep your engine firing flawlessly.
PRECISION ENGINEERED FIT - Designed as a direct OEM replacement for Freightliner MT45 6.0L V8 Gas engines (2020-2021).

The ACDelco Professional 41-110 Iridium Spark Plug is a premium, vehicle-specific replacement designed for Freightliner MT45 trucks with 6.0L V8 Gas engines (2020-2021). Featuring an iridium core for superior wear resistance and durability, it ensures optimal ignition performance and fuel efficiency. Engineered to meet exact OEM specifications, it offers a hassle-free fit and is backed by a 100,000-mile warranty, making it the smart choice for professional-grade reliability.

Specifications

ASIN	B01IU4WC6M
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#667,346 in Automotive ( See Top 100 in Automotive ) #108 in Automotive Performance Spark Plugs #342,775 in Automotive Replacement Parts
Brand Name	ACDelco
Compatible with Vehicle Type	Truck
Core Material	Iridium
Customer Reviews	4.5 4.5 out of 5 stars (807)
Global Trade Identification Number	00808709570936
Included Components	Iridium Spark Plug
Item Type Name	Iridium Spark Plug
Item Weight	6.4 ounces
Manufacturer	ACDelco
Manufacturer Part Number	12621258
Manufacturer Warranty Description	100,000 Miles / Unlimited Months (Parts Only)
Model Number	41-110
OEM Equivalent Part Number	41-110
Thread Size	M14x1.25
Top Material Type	Iridium
UPC	808709570936
Unit Count	4 Count

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R487

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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