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 41-121 (55585517) Iridium Spark Plug (Pack of 1)

Product ID: 20323951

Details

Brand
ACDelco
Core Material
Iridium
Thread Size
14mm
Top Material Type
Nickel
Vehicle Service Type
Motorcycle

⚡Iridium fine-wire electrode for efficient spark

🔇Suppressor seal blocks radio frequency interference

🔥High melting point for durability & wear resistance

€ 36.23

Duties & taxes included

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

⚡ Ignite your ride with precision and power — don’t get left in the dust!

CLEAN PERFORMANCE - Fine-wire design actively burns away carbon deposits, maintaining peak efficiency.
ELECTRONICS FRIENDLY - One-piece suppressor seal blocks disruptive radio frequencies for smooth vehicle electronics.
PERFECT FIT GUARANTEE - Engineered as an exact OEM replacement for seamless installation and optimal performance.
LONG LASTING DURABILITY - High melting point iridium core resists wear for extended spark plug life.
PRECISION IGNITION POWER - Iridium electrode ensures stable engine idle and lightning-fast acceleration.

The ACDelco Professional 41-121 Iridium Spark Plug delivers superior engine performance with a durable iridium fine-wire electrode that ensures stable idling, quick acceleration, and long-lasting wear resistance. Its suppressor seal minimizes electronic interference, making it an ideal OEM replacement for motorcycles and other vehicles, backed by a 7-year unlimited mile warranty.

Specifications

ASIN	B00DU252BM
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#396,734 in Automotive ( See Top 100 in Automotive ) #2,205 in Automotive Replacement Spark Plugs
Brand Name	ACDelco
Compatible with Vehicle Type	Motorcycle
Core Material	Iridium
Customer Reviews	4.8 4.8 out of 5 stars (806)
Global Trade Identification Number	40707773972098
Included Components	Spark Plug
Item Type Name	Spark Plug
Item Weight	1.44 ounces
Manufacturer	ACDelco
Manufacturer Part Number	55585517
Manufacturer Warranty Description	7 Year / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.
Model Number	41-121
Number of Items	1
Number of Packs	1
OEM Equivalent Part Number	55585517
Part Interchange Info	41-121
Thread Size	14mm
Top Material Type	Nickel
UPC	707773972090
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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€ 36.23

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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