Genuine GM Spark Plugs

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Iridium Spark Plug

GM 12637197

Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...

$10.44

MSRP $17.04

Save $6.60

38.7% Off

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Iridium Spark Plug

GM 19417055

4.8, 5.3 & 6.0L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium...

$10.82

MSRP $17.66

Save $6.84

38.7% Off

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Spark Plug Boot

GM 12689269

4.2L twin-turbo. Durable boot seal helps protect against moisture and contaminants

$18.01

MSRP $29.40

Save $11.39

38.7% Off

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Iridium Spark Plug

GM 12681657

Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...

$10.34

MSRP $16.88

Save $6.54

38.7% Off

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Iridium Spark Plug

GM 12680075

2.0L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition...

$9.14

MSRP $14.92

Save $5.78

38.7% Off

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Conventional Spark Plug

GM 19363518

Black Onyx coating helps reduce corrosion Copper core provides great heat transfer and helps maximize plug durability In...

$2.76

MSRP $4.50

Save $1.74

38.7% Off

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Conventional Spark Plug

GM 25193473

Black Onyx coating helps reduce corrosion Copper core provides great heat transfer and helps maximize plug durability In...

$2.62

MSRP $4.28

Save $1.66

38.8% Off

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Spark Plug Wire Set

GM 19171854

Straight Boot On Distributor. Vendor:acdelco. Vendor #726G. Durable to help transfer high voltage pulses without damage

$53.34

MSRP $92.16

Save $38.82

42.1% Off

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Spark Plug Wire Set

GM 19154580

Magnavox Coil Pack. Vendor:acdelco. Vendor #616V. All models. 3.8l. Without supercharger. 1st design. Durable to help transfer high...

$39.23

MSRP $67.79

Save $28.56

42.1% Off

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Spark Plug Wire Kit

GM 19417606

All models. 4.8l, 5.3l, 6.0l. 5.3, 6.0L. Hummer H2. 9.2". Coil Stamped 19005218. Durable to help transfer high voltage pulses without...

$90.75

MSRP $158.52

Save $67.77

42.8% Off

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Spark Plug Wire Set

GM 12192094

S-series. 2.2l. Durable to help transfer high voltage pulses without damage

$41.33

MSRP $71.43

Save $30.10

42.1% Off

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Spark Plug Wire Set

GM 19417613

Express, savana. 4.3l. Wire set. Silverado, sierra. 4.3l. 4.3L, 2008-2014. Durable to help transfer high voltage pulses without damage

$99.71

MSRP $174.16

Save $74.45

42.7% Off

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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

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.
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.