Spark Plugs

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The mixture of fuel and air in your engine is ignited by a spark plug. Known as "spark ignition" the process begins with the turn of the key in the ignition lock cylinder. With assistance from the car battery and the starter motor, the electric charge is enough to create the combustion that pumps the pistons and turns the crankshaft of your engine. All essential factors that get your car in motion.

Spark plugs can have a short or long lifespan, but none of them last forever. They can become rusty and misshapen over time, if not protected. And if they break, the whole combustion process will be thrown off. If you notice a rough ignition start, engine misfiring, or a completely dead car when you turn the key, it may be time to switch out your spark plug.

OEM engine components are the best choice for your vehicle. Rest assured you'll receive the quality parts fitted for your specific engine type. There are three common spark plugs. Platinum, copper, and iridium.

Copper spark plugs are more affordable, while platinum and iridium are more expensive, tend to fire better under extreme conditions, and are said to last longer. There are also double platinum, and double iridium spark plugs that, in some cases, receive up to 4 times the normal life span of a copper spark plug.

Order Genuine OEM Spark Plugs Through Us

No matter your GM model, you can locate the genuine spark plugs fitted for your vehicle year and engine by searching in your owner's manual. Once you find what you need, browse our online parts store and have your items shipped directly to your home residence immediately so you can make the fix and get back on the road.

Spark Plug Wire

Part Number: 12192474
GM GM
Other Names: Wire, 354b
Description: Cylinder 1.
Fits:
  • Buick:
    • Park Avenue
  • Pontiac:
    • Bonneville
$2.40

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
$14.71

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
$21.35

Spark Plug Wire

Part Number: 12192478
GM GM
Other Names: Wire, 354f
Replaces: 12192396
Description: Cylinder 5.
Fits:
  • Buick:
    • Park Avenue
  • Chevrolet:
    • Camaro
  • Pontiac:
    • Bonneville,
    • Firebird
MSRP $28.16
$16.61

Spark Plug Wire

Part Number: 21024474
GM GM
Other Names: Wire
Description: Cylinder 3.
Fits:
  • Saturn:
    • SC1,
    • SL,
    • SL1,
    • SW1
$8.46

2015-2017 Chevrolet Impala - Iridium Spark Plug

Part Number: 92457960
GM GM
Other Names: Spark Plug, 15865
Description: 3.6L, with bi-fuel. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium...
Fits:
  • Chevrolet:
    • Impala
MSRP $16.46
$10.53

2014-2024 GM - Iridium Spark Plug

Part Number: 12622441
GM GM
Other Names: Spark Plug, 1156
Description: 4.3L, 2018-19. 6.6L gas. 6.2L. without supercharger. Iridium is the latest in spark plug technology and is an exact replacement for...
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Camaro,
    • Corvette,
    • 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,
    • Yukon,
    • Yukon XL
MSRP $16.88
$10.80

2020-2025 Chevrolet Corvette - Iridium Spark Plug

Part Number: 12622442
GM GM
Other Names: Spark Plug, 1157
Description: Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...
Fits:
  • Chevrolet:
    • Corvette
MSRP $35.76
$22.35

2015-2024 Cadillac - Iridium Spark Plug

Part Number: 12662396
GM GM
Other Names: Spark Plug, 1230
Description: Coupe, 3.6L with twin-turbo. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original...
Fits:
  • Cadillac:
    • ATS,
    • CT4,
    • CTS,
    • XTS
MSRP $17.00
$10.88

2019-2020 Cadillac CT6 - Iridium Spark Plug

Part Number: 12672175
GM GM
Other Names: Spark Plug, 41104ip
Description: 4.2L twin-turbo. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium...
Fits:
  • Cadillac:
    • CT6
  • Chevrolet:
    • Corvette
MSRP $16.62
$10.64

2006-2020 GM - Iridium Spark Plug

Part Number: 12680072
GM GM
Other Names: Spark Plug, 1252
Replaces: 12563707, 12571164, 12609877, 12621258
Description: 6.0L. Iridium. Vendor:acdelco. Vendor #41-985. Iridium is the latest in spark plug technology and is an exact replacement for vehicles'...
Fits:
  • Buick:
    • LaCrosse,
    • Rainier
  • Cadillac:
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche,
    • Avalanche 1500,
    • Camaro,
    • Caprice,
    • Colorado,
    • Corvette,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • Express 4500,
    • LCF 3500,
    • Silverado 1500,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • SS,
    • Suburban 1500,
    • Suburban 2500,
    • Suburban 3500 HD,
    • Tahoe
  • GMC:
    • Canyon,
    • Savana 1500,
    • Savana 2500,
    • Savana 3500,
    • Savana 4500,
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H3,
    • H3T
  • Pontiac:
    • G8
MSRP $16.46
$10.53

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