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Genuine GM Spark Plugs

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What Causes Spark Plugs to Wear Out?

Spark plugs wear out over time due to various factors. Repeated sparking and exposure to combustion byproducts cause natural wear, leading to electrode and insulator deterioration. Carbon deposits from combustion can accumulate on the spark plug electrodes, reducing their effectiveness. Overheating, incorrect gaps, fuel additives and contaminants, and long service intervals can also contribute to spark plug wear. To prevent premature wear, regular inspections, proper maintenance, and using the correct spark plugs are crucial. If you notice poor engine performance, replacing the spark plugs may be necessary.

Other Interior Parts

  1. Starters

    The starter plays a crucial role in initiating the engine's ignition process. When the ignition key is turned, starters quickly engage, cranking the engine into life by meshing with the flywheel.

  2. Alternators

    Alternators convert mechanical energy into electrical power. They are mounted within the engine, and they produce a steady stream of electricity to recharge the battery and power various vehicle systems.

Get Factory GM Spark Plugs at Gateway Parts Online

Buy from our store and take advantage of our reliable nationwide shipping! Questions? Let us know.

Spark Plug Wire

Part Number: 21024467
GM GM
Other Names: Wire
Description: Cylinder 3. Black Composite Camshaft Cover.
Fits:
  • Saturn:
    • SC2,
    • SL2,
    • SW2
MSRP $17.42
$10.45

Spark Plug Wire

Part Number: 21024465
GM GM
Other Names: Wire
Description: Cylinder 1,4. Black Composite Camshaft Cover.
Fits:
  • Saturn:
    • SC2,
    • SL2,
    • SW2
MSRP $36.18
$21.71

Spark Plug Wire

Part Number: 21024474
GM GM
Other Names: Wire
Description: Cylinder 3.
Fits:
  • Saturn:
    • SC1,
    • SL,
    • SL1,
    • SW1
$8.60

Spark Plug Wire

Part Number: 12192474
GM GM
Other Names: Wire, 354b
Description: Cylinder 1.
Fits:
  • Buick:
    • Park Avenue
  • Pontiac:
    • Bonneville
$2.44

Spark Plug Wire

Part Number: 12716289
GM GM
Notes: Included with plug wire set.
Applications: 1.5L.
Other Names: Wire
Replaces: 12633447, 12670293
Description: 4.3L, 2018-19. Express, savana. 4.3l. Wire set. 6.6L gas. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Spark plug wire....
Fits:
  • Cadillac:
    • CT5,
    • CTS,
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Camaro,
    • Corvette,
    • Equinox,
    • Express 2500,
    • Express 3500,
    • Express 4500,
    • LCF 3500,
    • LCF 3500HG,
    • Silverado 1500,
    • Silverado 1500 LD,
    • Silverado 1500 LTD,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban,
    • Tahoe
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Savana 4500,
    • Sierra 1500,
    • Sierra 1500 Limited,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Terrain,
    • Yukon,
    • Yukon XL
MSRP $32.93
$20.16

Iridium Spark Plug

Part Number: 12688094
GM GM
Other Names: Spark Plug, 41106ip
Description: 2.7L turbo. 1.3L turbo. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components...
Fits:
  • Buick:
    • Encore GX
  • Cadillac:
    • CT4
  • Chevrolet:
    • Colorado,
    • Silverado 1500,
    • Silverado 1500 LTD,
    • Trailblazer
  • GMC:
    • Canyon,
    • Sierra 1500,
    • Sierra 1500 Limited
MSRP $18.44
$11.29

Conventional Spark Plug

Part Number: 95519058
GM GM
Other Names: Spark Plug
Replaces: 93176801
Description: Black Onyx coating helps reduce corrosion Copper core provides great heat transfer and helps maximize plug durability In...
Fits:
  • Saturn:
    • Astra
MSRP $12.98
$7.95

Iridium Spark Plug

Part Number: 12571165
GM GM
Other Names: Spark Plug, 851
Description: 6.2L with supercharged. 6.2L with supercharger. Vendor:acdelco. Vendor #41-104. 7.0L. Coupe, 6.2L. Iridium is the latest in spark plug...
Fits:
  • Cadillac:
    • CTS
  • Chevrolet:
    • Camaro,
    • Corvette
MSRP $18.50
$11.33

Iridium Spark Plug

Part Number: 12681656
GM GM
Other Names: Spark Plug, 1268
Replaces: 55576026, 55585517
Description: 1.4L turbo. Without high output. 1.8L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original...
Fits:
  • Buick:
    • Encore
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic,
    • Trax
MSRP $17.70
$10.84

Spark Plug Wire

Part Number: 12666910
GM GM
Other Names: Plug Wire, 357s
Replaces: 12623412
Description: 6.2L with supercharged. Durable to help transfer high voltage pulses without damage Manufactured to GM OE specification for fit, form,...
Fits:
  • Chevrolet:
    • Corvette
MSRP $30.74
$18.83

Iridium Spark Plug

Part Number: 55504354
GM GM
Other Names: Spark Plug, 41103ip
Description: 2.0l. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...
Fits:
  • Buick:
    • Envision
  • Cadillac:
    • CT4,
    • CT5,
    • CT6,
    • XT4,
    • XT5,
    • XT6
  • Chevrolet:
    • Blazer,
    • Equinox
  • GMC:
    • Acadia
MSRP $20.42
$12.51

Iridium Spark Plug

Part Number: 12681657
GM GM
Other Names: Spark Plug, 1269
Replaces: 12611882
Description: Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...
Fits:
  • Buick:
    • Enclave
  • GMC:
    • Acadia
  • Saturn:
    • Outlook
MSRP $16.46
$10.08

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