|Item Weight||2.1 ounces|
|Product Dimensions||3.6 x 1.1 x 6.6 inches|
|Item model number||41-101|
|Discontinued by manufacturer||Yes|
|Manufacturer Part Number||41-101|
|OEM Part Number||12568387|
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ACDelco 41-101 Professional Iridium Spark Plug (Pack of 1)
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- Iridium offers better engine idle stability and smoother performance
- Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
- Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form, to help improve fuel economy
- One piece suppressor seal blocks radio frequencies that can affect vehicle electronics
- Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage
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|Item Dimensions||1.1 x 3.6 x 6.6 in||—||—||—||10 x 3.8 x 6 in||1.1 x 3.6 x 6.6 in|
|Item Weight||2.08 ounces||—||0.57 lb||—||1.18 lbs||—|
|Part Type ID||7212||—||—||—||7228||7212|
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ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today. They are the latest in spark plug technology and an exact replacement for your vehicle’s original components. Iridium composition has the highest melting point and strength of all metals. It provides the greatest wear resistance and durability over Platinum and Conventional spark plugs. ACDelco Professional Iridium Spark Plugs provide the best wear resistance and durability of any spark plug. These premium aftermarket replacement iridium spark plugs are manufactured to meet your expectations for fit, form and function.
From the manufacturer
Good Maintenance Practices
Removing your Professional Iridium spark plug
Grasp the spark plug boot and gently rotate it 90° counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use spark plug boot removing tool. Do not grab or violently pull spark plug cables.
Use the correct deep socket size to loosen each spark plug one or two turns.
Note: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
Inspecting the spark plug
Brush or air blast dirt away from the well areas before removing spark plugs. Caution: Use goggles to protect eyes from dirt when applying compressed air to spark plug wells.
Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
Installing new spark plugs
Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. Note: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace the incorrectly gapped ACDelco Professional Iridium Spark Plug with one that is correctly gapped.
Signs of Wear and Troubleshooting
Signs that your spark plugs need to be replaced:
Engine has trouble starting, hesitates, or cuts out.
Sluggish engine performance, loss of engine power, or decreased fuel economy.
Lack of acceleration or loss of speed when driving uphill.
Cracks in the upper or lower portion of the spark plug insulator.
Chipped or broken insulator tip.
Damaged spark plug boot.
Features and Benefits
- Iridium offers better engine idle stability and smoother performance.
- Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration.
- One piece suppressor seal blocks radio frequencies that can affect vehicle electronics.
The Professional category of high-quality aftermarket auto parts and products covers most GM vehicles as well as many other makes and models (varies by product line). Most of the current ACDelco line falls into this category, which is a high-quality alternative to GM OE products.
Frequently Asked Questions
Q: Are ACDelco spark plugs pre-gapped?
A: Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
Q: When I replace my spark plugs, should I also replace my spark plug wires?
A: Not always. Refer to your vehicle owner’s manual or contact the manufacturer for more information.
Q: How do spark plugs become fouled?
A: Certain engine conditions can cause oil, powder, and carbon to collect on the spark plug causing a misfire. See our list of 'Signs and Causes of Spark Plug Wear'.
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(UPDATE) My gas mileage in the city has since changed from 14mpg to 16mpg. The engine starts much faster and cruises up hill without shifting. I'm happy with the results.
and they still looked pretty good when I removed them. Iridium spark plugs definitely superior to platinum.