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Spark Plug - ACDelco (55564748)

ACDelco part # 55564748

ACDelcoMPN55564748
Sale Price$10.92
Description : ACDelco Professional Iridium Spark Plugs are a high quality replacement for many vehicles on the road today. They are our latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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Product Details

Description

ACDelco Professional Iridium Spark Plugs are a high quality replacement for many vehicles on the road today. They are our latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
spark-plug;

Part Number (MPN)
55564748
Brand
SKU
55564748
UPC / GTIN
707773167557 / 00707773167557
Condition
New
Other Names
55564748
Brand
ACDelco GM Original Equipment
Approximate Resistor Value (k ohms)
3-7.5k ohms
Center Electrode Core Material
Copper
Center Electrode Tip Material
Iridium
FAQ - Answer 1
Yes, this interval depends on what type of spark plug your vehicle requires. Refer to your owner's manual or contact your vehicle's manufacturer for more information.
FAQ - Answer 2
Yes, if it is the scheduled time for spark plug replacement. It is okay to replace one spark plug if it is fouled or damaged prior to scheduled maintenance, provided the source of the damage is found and corrected.
FAQ - Answer 3
Yes. Diesel engines require glow plugs because diesel engines operate differently than gas engines. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for their cold starts. Refer to your owner's manual or contact your vehicle's manufacturer for more information.
FAQ - Answer 4
Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
FAQ - Answer 5
Not always, but you should inspect your spark plug wires for wear when replacing your spark plugs. Refer to your vehicle owner's manual or contact the manufacturer for more information.
FAQ - Answer 6
Yes, pre-ignition can cause serious damage to your engine. Pre-ignition is the ignition of fuel before the actual spark occurs, which causes a rapid temperature rise in the combustion chamber that can damage engine components and melt spark plug electrodes. Causes of pre-ignition include but are not limited to a buildup of deposits that can become incandescent in the combustion chamber, improper installation torque being applied to spark plugs, and having spark plugs with a heat range that is too hot for the engine's operating condition.
FAQ - Answer 7
No, cleaning your old spark plugs is not recommended. Dirty, fouled spark plugs may also have broken or chipped insulator tips, worn electrodes, or worn or missing side wires. These conditions severely affect spark plug performance. Replace your dirty, fouled spark plugs with new ACDelco spark plugs.
FAQ - Answer 8
Yes, ACDelco has marine spark plugs for many applications.
FAQ - Question 1
Is there a recommended interval for changing my vehicle's spark plugs?
FAQ - Question 2
Should I change all of my vehicle's spark plugs at the same time?
FAQ - Question 3
Does a diesel engine require a different type of plug than a gas engine?
FAQ - Question 4
Are ACDelco spark plugs pre-gapped?
FAQ - Question 5
When I replace my spark plugs, should I also replace my spark plug wires?
FAQ - Question 6
What is pre-ignition and can it damage my engine?
FAQ - Question 7
Can I just clean my spark plugs instead of replacing them?
FAQ - Question 8
Does ACDelco have marine spark plugs?
Features & Benefits - Bullet 1
Iridium composition provides a high melting point and great strength, providing excellent wear resistance and durability
Features & Benefits - Bullet 2
Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance
Features & Benefits - Bullet 3
Three Piece Fired in Suppressor seal meters spark energy for long electrode life, prevents combustion leakage and helps block radio frequencies that can affect vehicle electronics
Good Maintenance Practices - Section 1 - Bullet 1
Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use a spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
Good Maintenance Practices - Section 1 - Bullet 2
Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from debris when applying compressed air to spark plug wells.
Good Maintenance Practices - Section 1 - Bullet 3
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.
Good Maintenance Practices - Section 1 - Bullet 4
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.
Good Maintenance Practices - Section 1 - Bullet 5
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.
Good Maintenance Practices - Section 1 - Bullet 6
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 any incorrectly gapped ACDelco Professional Iridium Spark Plugs with plugs that are correctly gapped.
Good Maintenance Practices - Section 1 - Bullet 7
Install spark plugs or glow plugs to the proper torque per the manufacturers' specification.
Good Maintenance Practices - Section 1 - Header
Visually inspect spark plugs for signs of wear. Follow these steps for removing spark plugs for inspection, servicing or replacement:
Ground Configuration
Standard
Ground Electrode Quantity
1
Ground Electrode Tip Design
Standard
Height (in)
2
Hex Size (mm)
16
Length (in)
4
Manufacturer Heat Range
7
PADB ID 557
0.551<br />14
Pack Of
1
Pre-Gap Size
0.039<br />1
Reach
1.043<br />26.5
Resistor Type
Yes
Seat Type
Tapered
Signs of Wear & Troubleshooting - Section 1 - Bullet 1
Your engine having trouble starting, hesitating, or cutting out
Signs of Wear & Troubleshooting - Section 1 - Bullet 2
Sluggish engine performance, loss of engine power, or decreased fuel economy
Signs of Wear & Troubleshooting - Section 1 - Bullet 3
Lack of acceleration or loss of speed when driving uphill under load
Signs of Wear & Troubleshooting - Section 1 - Bullet 4
Cracks in the upper or lower portion of the spark plug insulator
Signs of Wear & Troubleshooting - Section 1 - Bullet 5
Chipped or broken insulator tips
Signs of Wear & Troubleshooting - Section 1 - Bullet 6
Damaged spark plug boots
Signs of Wear & Troubleshooting - Section 1 - Header
Signs of wear for spark plugs include but are not limited to:
Weight (lb)
0.11
Width (in)
2

YearMakeModelBody & TrimEngine & Transmission
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission

BrandEquivalent Part Numbers

Rows per page:

0-0 of 0

BrandEquivalent Part Numbers
GM
55564748
General Motors
55564748
NGK
97218, DILFR7B10G

Shipping Policy

At Restauco Parts, we ship to the 48 contiguous U.S. states and Puerto Rico. Every order ships from our supplier's authorized warehouses located in the United States. At this time we do not ship to Alaska, Hawaii, the U.S. Virgin Islands, Guam or other U.S. territories.

When will my order be processed?
Orders are processed Monday through Friday. You will receive a tracking number by email once your order has shipped. Weekend orders will be processed the next business day.

How long will it take to receive my order?
Delivery time depends on the carrier and your location. Oversized shipments may require additional time — you will be contacted prior to shipping for approval.

Which carriers do you use?
We ship via UPS, FedEx, and USPS depending on the size, weight, and destination of your order. The most appropriate carrier will be selected at the time of fulfillment. Carrier substitutions may be made to reduce shipping costs to the customer.

Do you ship internationally?
We do not ship internationally. We ship within the 48 contiguous U.S. states and Puerto Rico.

VIN Requirement
We strive for 100% accuracy on all orders. To help us achieve this goal, we ask that you include your car's VIN when placing your order. This is a courtesy service to help avoid wrong part orders and returns. We are not responsible for 100% guaranteed fitment.

Backordered or Discontinued Parts
In the unlikely event that a part has been placed on backorder or discontinued, we will do our best to find it for you as quickly as possible.

Questions?
If you have any questions about your shipment, please contact us at [email protected]

Check out our Shipping Policy for more details.

Return Policy

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You'll also need the receipt or proof of purchase. To start a return, you can contact us at [email protected] Please note that returns can be made to several branches, contact us to provide thhe correct information.

If your return is accepted, the refund will be processed between 3-4 business day once we receive the item. Items sent back to us without first requesting a return will not be accepted. NOTE: We don't make refund for shipping cost. You can always contact us for any return question at [email protected].

Damages and Issues

Please inspect your order upon receipt and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Refunds

We will notify you once we've received and inspected your return, and let you know if the refund was approved or not. If approved, you'll be automatically refunded on your original payment method within 10 business days (excluding shipping cost). Please remember it can take some time for your bank or credit card company to process and post the refund too. If more than 15 business days have passed since we’ve approved your return, please contact us at [email protected].


Check out our Return Policy for more details.

ACDelco

Shop ACDelco auto parts at Restauco Parts. ACDelco is the only aftermarket parts brand backed by General Motors, offering both Original Equipment and premium aftermarket lines. Our ACDelco inventory includes Gold and Silver product lines covering brake pads, spark plugs, oil filters, batteries, sensors, ignition coils, and more. Every ACDelco part is designed to meet or exceed OEM specifications, ensuring reliable performance for GM vehicles and most other makes and models. Trust the brand that has been delivering automotive excellence for over 100 years.

Browse the Full ACDelco Parts Catalog

Restauco.com

Restauco Parts is your trusted online source for genuine OEM and premium aftermarket auto parts. We carry top brands including ACDelco, GM Genuine Parts, Motorcraft, Dorman, Akebono, Wagner, and Bilstein. Whether you need brake pads, suspension parts, ignition coils, fuel pumps, or engine components, we offer competitive prices and fast shipping on thousands of parts for all major makes and models. Shop with confidence — every part we sell meets or exceeds OEM quality standards.