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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.

Conventional Spark Plug

Part Number: 19354416
GM GM
Other Names: Spark Plug, r44lts6
Replaces: 05614158, 19157992, 19300384, 5613906
Description: 4.3L, 2003-2007. Optional. Vendor:acdelco. Standard. Vendor #R44LTS6. Black Onyx coating helps reduce corrosion Copper core provides...
Fits:
  • Buick:
    • Electra,
    • LeSabre,
    • Reatta,
    • Riviera
  • Cadillac:
    • Allante,
    • Commercial Chassis,
    • DeVille,
    • Eldorado,
    • Fleetwood,
    • Seville
  • Chevrolet:
    • Express 1500,
    • Express 2500
  • GMC:
    • Savana 1500,
    • Savana 2500
  • Oldsmobile:
    • 98,
    • Delta 88,
    • Toronado
  • Pontiac:
    • Bonneville
MSRP $4.36
$2.67

Iridium Spark Plug

Part Number: 12642722
GM GM
Other Names: Spark Plug, 1208
Description: 6.2L supercharged. 6.2L. with supercharger. Iridium is the latest in spark plug technology and is an exact replacement for vehicles'...
Fits:
  • Cadillac:
    • CT5,
    • CTS,
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Camaro,
    • Corvette
MSRP $16.58
$10.16

Iridium Spark Plug

Part Number: 12683541
GM GM
Other Names: Spark Plug, 1279
Replaces: 55490097
Description: With high output. 1.5L turbo, ac delco markings. 1.2L turbo. 1.4L, acdelco # 1267411. 1.4L, acdelco # 41-151. Vendor #41-156. Iridium is...
Fits:
  • Buick:
    • Cascada,
    • Encore,
    • Encore GX,
    • Envista
  • Chevrolet:
    • Cruze,
    • Equinox,
    • Malibu,
    • Trailblazer,
    • Trax
  • GMC:
    • Terrain
MSRP $16.80
$10.29

Iridium Spark Plug

Part Number: 12646780
GM GM
Other Names: Spark Plug, 1215
Description: The GM 12646780 Iridium Spark Plug is a genuine OEM ignition component designed for long-lasting performance and efficient combustion in...
Fits:
  • Buick:
    • LaCrosse,
    • Regal Sportback
  • Cadillac:
    • ATS,
    • CT6,
    • CTS,
    • XT5,
    • XT6
  • Chevrolet:
    • Blazer,
    • Camaro,
    • Colorado
  • GMC:
    • Acadia,
    • Canyon
MSRP $18.48
$11.32

Spark Plug Wire

Part Number: 21024472
GM GM
Other Names: Wire
Description: Cylinder 1,4.
Fits:
  • Saturn:
    • SC1,
    • SL,
    • SL1,
    • SW1
MSRP $26.40
$15.84

Iridium Spark Plug

Part Number: 12681659
GM GM
Other Names: Spark Plug, 1271
Replaces: 12626906, 12647827
Description: 2.5L, 2.0L turbo, 2.0L turbo. Coupe, 2.0L turbo. Iridium is the latest in spark plug technology and is an exact replacement for...
Fits:
  • Buick:
    • Envision,
    • Regal,
    • Regal Sportback,
    • Regal TourX
  • Cadillac:
    • ATS,
    • CT6,
    • CTS
  • Chevrolet:
    • Camaro,
    • Equinox,
    • Malibu,
    • Traverse
  • GMC:
    • Terrain
MSRP $16.46
$10.08

Spark Plug Wire

Part Number: 12173581
GM GM
Other Names: Spark Plug Wire, 346w
Description: Cylinder 6. Express, savana. 4.3l. Individual wires. #6. Cylinder 8. Durable to help transfer high voltage pulses without damage
Fits:
  • Chevrolet:
    • Astro,
    • Blazer,
    • C2500,
    • C3500,
    • C3500HD,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • K2500 Pickup,
    • K3500 Pickup,
    • S10,
    • Silverado 1500,
    • Silverado 1500 Classic
  • GMC:
    • C2500 Pickup,
    • C3500 Pickup,
    • C3500HD,
    • Jimmy,
    • K2500 Pickup,
    • K3500 Pickup,
    • Safari,
    • Savana 1500,
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 1500 Classic,
    • Sonoma
  • Oldsmobile:
    • Bravada
MSRP $37.98
$23.26

Spark Plug Wire

Part Number: 12192133
GM GM
Other Names: Spark Plug Wire, 349v
Description: Coil Stamped 12558693. All models. 4.8l, 5.3l, 6.0l. 10.5 long. Hummer H2. 10.5 long. Durable to help transfer high voltage pulses...
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche 1500,
    • Silverado 1500,
    • Silverado 1500 Classic,
    • Silverado 1500 HD,
    • Silverado 1500 HD Classic,
    • Silverado 2500,
    • Silverado 2500 HD,
    • Silverado 2500 HD Classic,
    • Silverado 3500,
    • Silverado 3500 Classic,
    • Suburban 1500,
    • Suburban 2500,
    • Tahoe
  • GMC:
    • Sierra 1500,
    • Sierra 1500 Classic,
    • Sierra 1500 HD,
    • Sierra 1500 HD Classic,
    • Sierra 2500,
    • Sierra 2500 HD,
    • Sierra 2500 HD Classic,
    • Sierra 3500,
    • Sierra 3500 Classic,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H2
MSRP $28.62
$17.53

Spark Plug Wire

Part Number: 12192372
GM GM
Other Names: Wire
Description: Cylinder 4.
Fits:
  • Buick:
    • Century
  • Chevrolet:
    • Impala,
    • Lumina,
    • Malibu,
    • Monte Carlo,
    • Venture
  • Oldsmobile:
    • Alero,
    • Silhouette
  • Pontiac:
    • Grand Am,
    • Grand Prix,
    • Montana
$14.96

Iridium Spark Plug

Part Number: 12664824
GM GM
Other Names: Spark Plug, 1231
Description: Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...
Fits:
  • Chevrolet:
    • Corvette
MSRP $26.14
$16.01

Iridium Spark Plug

Part Number: 12637197
GM GM
Other Names: Spark Plug, 1192
Description: Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...
Fits:
  • Chevrolet:
    • Spark,
    • Volt
MSRP $16.62
$10.18

Spark Plug Boot

Part Number: 12689269
GM GM
Notes: Included with ignition coil.
Other Names: Direct Ignition Coil Boot
Description: 4.2L twin-turbo. Durable boot seal helps protect against moisture and contaminants
Fits:
  • Cadillac:
    • CT6
MSRP $29.40
$18.01

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