ACDelco 41-121 Spark Plug - Iridium
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Description
This is an Iridium Spark Plug.
- Features a fine-wire iridium center electrode for maximum durability and a long service life.
- Provides consistent ignitability and optimal engine performance.
For more technical details and/or manufacturers product guides, email us.
Most orders leave our warehouse within 1 business day unless otherwise noted.
*Add this item to the cart to estimate shipping costs and any applicable taxes.
Features
- Reach 1:19 (MM)
- Reach 2:0.75 (IN)
- Weight (lb):0.03
- Width (in):0.8
- Height (in):0.8
- Hex Size:16 MM
- Pre-Gap Size 1:1.5 (MM)
- Pre-Gap Size 2:0.06 (IN)
- Ground Electrode Quantity:1
- Insulator Height 1:1.99 (IN)
- Insulator Height 2:50.5 (MM)
- Length (in):3
- Thread Diameter (mm):14
- Hex Size (mm):16
- Thread Diameter (in):0.55
- Product Description:ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous s
- Signs of Wear & Troublesh 1:Chipped or broken insulator tips
- Signs of Wear & Troublesh 2:Cracks in the upper or lower portion of the spark plug insulator
- Signs of Wear & Troublesh 3:Lack of acceleration or loss of speed when driving uphill under load
- Signs of Wear & Troublesh 4:Signs of wear for spark plugs include but are not limited to:
- Signs of Wear & Troublesh 5:Damaged spark plug boots
- Signs of Wear & Troublesh 6:Your engine having trouble starting, hesitating, or cutting out
- Good Maintenance Practice 1:Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress
- Good Maintenance Practice 2:Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles t
- Good Maintenance Practice 3:Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot
- Good Maintenance Practice 4:Install spark plugs or glow plugs to the proper torque per the manufacturers specification.
- Good Maintenance Practice 5:Remove each spark plug and place each one in a tray by cylinder number. This will help identify and
- Good Maintenance Practice 6:Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark p
- Good Maintenance Practice 7:Visually inspect spark plugs for signs of wear. Follow these steps for removing spark plugs for insp
- Good Maintenance Practice 8:Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correc
- Features & Benefits - 1:Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDe
- Features & Benefits - 2:ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and a
- Features & Benefits - 3:Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate,
- Features & Benefits - 4:Iridium composition provides a high melting point and great strength, helps to provide excellent wea
- Features & Benefits - 5:Iridium is the latest in spark plug technology and is an exact replacement for vehicles original com
- Features & Benefits - 6:Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smoot
- Features & Benefits - 7:GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac v
- Features & Benefits - 8:GM regularly updates production and service part designs to integrate new materials and technologies
- Features & Benefits - 9:Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent comb
- Center Electrode Core Material:Copper
- Center Electrode Tip Material:Iridium
- Ground Configuration:Standard
- Ground Electrode Tip Design:Standard
- Resistor Type:Yes
- Resistance (kOhms):7500
- Grade Type:Regular
- Hex Type:Hex
- Center Electrode Design:Standard
- Seat Type:Flat
- Washer (s) Included:Yes
- Washer Type:Crush
- Thread Size:M14 - 1.25
- Programming Required:No
- FAQ - Question 1:Is there a recommended interval for changing my vehicle s spark plugs?
- FAQ - Answer 1:Yes, this interval depends on what type of spark plug your vehicle requires. Refer to your owner s m
- FAQ - Question 2:Should I change all of my vehicle s spark plugs at the same time?
- FAQ - Answer 2:Yes, if it is the scheduled time for spark plug replacement. It is okay to replace one spark plug if
- FAQ - Question 3:Does a diesel engine require a different type of plug than a gas engine?
- FAQ - Answer 3:Yes. Diesel engines require glow plugs because diesel engines operate differently than gas engines.
- FAQ - Question 4:Are ACDelco spark plugs pre-gapped?
- 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. R
- 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 - Answer 6:Yes, pre-ignition can cause serious damage to your engine. Pre-ignition is the ignition of fuel befo
- FAQ - Question 7:Can I just clean my spark plugs instead of replacing them?
- FAQ - Answer 7:No, cleaning your old spark plugs is not recommended. Dirty, fouled spark plugs may also have broken
- FAQ - Question 8:Does ACDelco have marine spark plugs?
- FAQ - Answer 8:Yes, ACDelco has marine spark plugs for many applications.
- Interchange - AUTOLITE:XP3922 AI3922 XP3922DP2 XP3923
- Interchange - AUTOPART INTERNATIONAL:ACD41-121
- Interchange - AUTOZONE/AUTOLITE:XP3923 XP3922
- Interchange - CHAMPION SPARK PLUGS:9770
- Interchange - E3 SPARK PLUGS:E3.64
- Interchange - GENERAL MOTORS OE:55585517
- Interchange - NAPA CANADA/AC DELCO SPARK PLUGS - ACP:41121
- Interchange - NAPA CANADA/AUTOLITE SPARK PLUGS- AUT:XP3923 AP3923 XP3922 APP3923
- Interchange - NAPA CANADA/CHAMPION SPARK PLUG - CHA:9770
- Interchange - NAPA CANADA/NGK SPARK PLUGS - NGB:91039 92400
- Interchange - NAPA/AC SPARK PLUGS-AC:41121
- Interchange - NAPA/AUTOLITE - AUT:XP3923 AP3923 APP3923 XP3922
- Interchange - NAPA/CHAMPION SPK PLUGS-CHA:9770
- Interchange - NAPA/FEL - PRO GASKETS - FPG:9770
- Interchange - NAPA/NGK SPARK PLGS-OXYGEN SENS-NGK:91039
- Interchange - NGK CANADA BASE NUMBERS:IFR7X7G 91039 FR7BHX-S
- Interchange - NGK CANADA STOCK NUMBERS:92400 91039
- Interchange - NGK USA BASE NUMBERS:FR7BHX-S IFR7X7G
- Interchange - NGK USA STOCK NUMBERS:92400 91039
- Interchange - SKP:SP1011
- Applications 1:Buick (9), 2013 - 2021
- Applications 2:Chevrolet (24), 2011 - 2021
Reviews
Details
Product Details:
- Manufacturer:ACDelco
- Part Number:41-121
- UPC:707773972090
- Sold in QTY:1
- Condition:New
- Country of Origin:Japan
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Questions shoppers ask
See all FAQsHow soon does it ship?
Most orders leave our warehouse within 1 business day unless otherwise noted. Add the item to your cart to see shipping cost and any tax.
Can I return it?
Most items can be returned within 30 days of delivery if they are unused and in their original, undamaged packaging. Email us for a Return Authorization (RA) number first, and make sure the item reaches our warehouse within those 30 days. A 15% restocking fee applies and you pay return shipping, unless the item is defective or the mistake was ours. Special orders and items marked No Return can't be returned. Full return policy.
Do you offer quantity discounts?
Many items do. When this one has them, the price breaks are listed with the price above, and the price updates as you change the quantity. Need a larger quantity than we show? Ask us.
Your prices are so good, is it new?
Yes. This item is new and in its original ACDelco packaging unless the description above says otherwise.