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0) SPARK PLUGS

0) SPARK PLUGS
Item #: 83153966

Product Info

41-103
ACDELCO

0) SPARK PLUGS
ACDelco 41-103 Iridium Spark Plug

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

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.

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.

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.

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 GM OE Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco GM OE Iridium Spark Plug. You could damage the spark plug. Replace any incorrectly gapped ACDelco GM OE Iridium Spark Plugs with plugs that are correctly gapped.

Install spark plugs or glow plugs to the proper torque per the manufacturers' specification.

  • Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components
  • Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability
  • Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance
  • Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics
  • Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
    • Package Quantity1
      UPC707773189627
      ACDelco Market Indicator CA - L0Y
      ACDelco Market Indicator US - L0Y
      Center Electrode Core MaterialCopper
      Center Electrode Tip MaterialIridium
      FAQ - Answer 1Yes, 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 2Yes, 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 3Yes. 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 4Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
      FAQ - Answer 5Not 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 6Yes, 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 7No, 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 8Yes, ACDelco has marine spark plugs for many applications.
      FAQ - Question 1Is there a recommended interval for changing my vehicle's spark plugs?
      FAQ - Question 2Should I change all of my vehicle's spark plugs at the same time?
      FAQ - Question 3Does a diesel engine require a different type of plug than a gas engine?
      FAQ - Question 4Are ACDelco spark plugs pre-gapped?
      FAQ - Question 5When I replace my spark plugs, should I also replace my spark plug wires?
      FAQ - Question 6What is pre-ignition and can it damage my engine?
      FAQ - Question 7Can I just clean my spark plugs instead of replacing them?
      FAQ - Question 8Does ACDelco have marine spark plugs?
      Features & Benefits - Bullet 1Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components
      Features & Benefits - Bullet 2Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability
      Features & Benefits - Bullet 3Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance
      Features & Benefits - Bullet 4Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics
      Features & Benefits - Bullet 5Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability
      Features & Benefits - Bullet 6Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
      Features & Benefits - Bullet 7ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
      Features & Benefits - Bullet 8GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
      Features & Benefits - Bullet 9GM regularly updates production and service part designs to integrate new materials and technologies
      Good Maintenance Practices - Section 1 - Bullet 1Grasp 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, u

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