Spark Plugs

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Your GM vehicle doesn't start without ignition. That only happens thanks to your spark plugs, which ignite the mixture of oxygen and fuel inside the combustion chamber in a process that's known as spark ignition.

How Spark Plugs Work

It all begins when you turn your key in the ignition lock cylinder or press the "Start" button. That leads to the ignition switch activating and your car battery, starter motor, starter solenoid, and ignition coil teaming to create a small electric charge. The spark plugs capture that charge in their leads to kindle combustion. Once that happens, the pistons pump, the crankshaft turns, and you're ready to go.

How to Recognize Spark Plug Issues

Eventually, your spark plugs may become too corroded to work right, or the gap between the leads may have widened too far to produce an effective spark. When that happens, you'll need to replace yours as soon as possible to keep your engine running right. Signs of trouble include:

  • Engine misfires
  • Uneven engine idles
  • Difficulty starting your vehicle
  • The "Check Engine" dashboard light comes on

You Can Trust Genuine GM Spark Plugs

Since these are similar symptoms to alternator issues, you'll want to carefully examine your entire charging system to determine the source of the problem. If your spark plugs need replacing, insist on using the best for your make and model. Those are the ones made by your manufacturer, since they're designed specifically to work with your vehicle and its engine. Our online GM auto parts store has your next set in stock and ready to ship, so buy now to save!

Spark Plug
Part Number: 12571535
Options: Left, Right
Description: Platinum. 4.4 & 4.6L, 4.6L. More Info
MSRP $10.66
$6.40
MSRP $10.66
$6.40
Spark Plug
Part Number: 12578277
Description: Vendor:acdelco. Vendor #41-983. 8.1L. More Info
MSRP $10.66
$6.40
MSRP $10.66
$6.40
Spark Plug
Part Number: 05613882
Other Names: F (S)Spark Plug More Names
MSRP $3.22
$1.93
MSRP $3.22
$1.93
Spark Plug
Part Number: 05614046
Other Names: F (S)Spark Plug More Names
Description: Vendor:acdelco. Vendor #R43CTS6. More Info
MSRP $2.90
$1.74
MSRP $2.90
$1.74
Spark Plug
Part Number: 05614281
Other Names: F (S)Spark Plug More Names
Description: Platinum. More Info
MSRP $10.66
$6.40
MSRP $10.66
$6.40
Spark Plug
Part Number: 88901006
Other Names: F (S)Spark Plug Pkg More Names
Description: Vendor:acdelco. Vendor #41-800. Platinum. More Info
MSRP $11.02
$6.61
MSRP $11.02
$6.61
Spark Plug
Part Number: 88901021
Other Names: F (S)Spark Plug Pkg More Names
Description: Platinum. More Info
MSRP $11.02
$6.61
MSRP $11.02
$6.61
Spark Plug
Part Number: 94859009
$3.98
$3.98
Spark Plug,
Part Number: 19301656
Other Names: F (S)Spark Plug Pkg More Names
Replaces: 5613870
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Spark Plug,
Part Number: 19307141
Replaces: 19238455, 19250963
MSRP $6.96
$4.18
MSRP $6.96
$4.18
Spark Plug Assembly
Part Number: 19366108
Replaces: 19310637
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Spark Plug
Part Number: 12571533
Description: 4.4 & 4.6L, 4.6L. More Info
MSRP $10.66
$6.40
MSRP $10.66
$6.40
Spark Plug
Part Number: 12674112
Other Names: F (S)Spark Plug More Names
Description: 1.4L, acdelco # 1267411. More Info
MSRP $14.28
$8.57
MSRP $14.28
$8.57
Spark Plug
Part Number: 19208535
MSRP $11.02
$6.61
MSRP $11.02
$6.61
Spark Plug
Part Number: 19362247
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Spark Plug
Part Number: 12582002
Description: 3.5L. More Info
MSRP $34.02
$20.41
MSRP $34.02
$20.41
Spark Plug
Part Number: 12621258
Description: Vendor:acdelco. Vendor #41-985. 6.0L. 5.3L. 6.2L without supercharger. Iridium. 6.0 & 6.2L. More Info
MSRP $11.90
$7.14
MSRP $11.90
$7.14
Spark Plug
Part Number: 19158037
Other Names: F (S)Spark Plug More Names
MSRP $11.02
$6.61
MSRP $11.02
$6.61
Spark Plug
Part Number: 05613878
Other Names: F (S)Spark Plug More Names
MSRP $3.60
$2.16
MSRP $3.60
$2.16
Spark Plug
Part Number: 19208523
Other Names: F (S)Spark Plug More Names
Description: Police. Taxi. Vendor:acdelco. Vendor #CR43TS. Platinum. More Info
MSRP $11.02
$6.61
MSRP $11.02
$6.61
Spark Plug
Part Number: 19238463
Other Names: F Spark Plug More Names
Description: Rapid Fire. More Info
MSRP $6.14
$3.68
MSRP $6.14
$3.68
Spark Plug
Part Number: 19354417
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Spark Plug Wire
Part Number: 12072148
Other Names: Spark Plug Wire More Names
Description: Cylinder 3. Individual wires. 2.0L. No. 2. Durable to help transfer high voltage pulses without damage More Info
MSRP $17.32
$10.39
MSRP $17.32
$10.39
Spark Plug Wire
Part Number: 12072153
Other Names: Spark Plug Wire More Names
Description: Cylinder 3. All models. 2.2l. No.4. All models. 3.1l. No. 2. Durable to help transfer high voltage pulses without damage More Info
MSRP $18.36
$11.02
MSRP $18.36
$11.02
Spark Plug Wire
Part Number: 12192371
Description: Cylinder 5. More Info
MSRP $20.89
$18.80
MSRP $20.89
$18.80
Spark Plug Wire
Part Number: 12192372
Other Names: Wire More Names
Description: Cylinder 4. More Info
MSRP $20.32
$12.19
MSRP $20.32
$12.19
Spark Plug Wire
Part Number: 12192373
Description: Cylinder 6. More Info
MSRP $22.13
$19.92
MSRP $22.13
$19.92
Spark Plug Wire
Part Number: 12192466
Other Names: Spark Plug Wire More Names
Description: Cylinder 2. All models. 2.5l. Cylinder 1. Individual wires. 2.5L. All models. 2.2l. No.3. 4 cylinder. No 2. Durable to help transfer... More Info
MSRP $32.01
$19.20
MSRP $32.01
$19.20
Spark Plug Wire
Part Number: 12192474
Other Names: Wire More Names
Description: Cylinder 1. More Info
MSRP $18.80
$11.28
MSRP $18.80
$11.28
Iridium Spark Plug
Part Number: 12622442
Other Names: Spark Plug More Names
Description: Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components\ \ Iridium composition... More Info
MSRP $33.12
$19.87
MSRP $33.12
$19.87
Iridium Spark Plug
Part Number: 12646780
Other Names: Spark Plug More Names
Description: Coupe, 3.6L without twin-turbo. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Iridium Spark Plug
Part Number: 12650283
Other Names: Spark Plug More Names
Description: 3.0L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components\ Iridium composition... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Spark Plug Wire
Part Number: 12666910
Other Names: Plug Wire More Names
Replaces: 12623412
Description: 6.2L with supercharged. Durable to help transfer high voltage pulses without damage\ \ \ \ \ \ Manufactured to GM OE specification for... More Info
MSRP $27.52
$16.51
MSRP $27.52
$16.51
Iridium Spark Plug
Part Number: 12672175
Other Names: Spark Plug More Names
Description: 4.2L twin-turbo. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components\ Iridium... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Iridium Spark Plug
Part Number: 12680075
Other Names: Spark Plug More Names
Replaces: 12610767
Description: 2.0L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components\ Iridium composition... More Info
MSRP $13.76
$8.26
MSRP $13.76
$8.26
Iridium Spark Plug
Part Number: 12681658
Other Names: Spark Plug More Names
Replaces: 12620540
Description: 2.4l. 3.0L. 2.0L turbocharged. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Iridium Spark Plug
Part Number: 12681662
Options: Left, Right
Other Names: Spark Plug More Names
Replaces: 12591131
Description: 3.5L. 3.9L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components\ Iridium... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Iridium Spark Plug
Part Number: 12681664
Options: Left, Right
Other Names: Spark Plug More Names
Replaces: 12568387
Description: Vendor:acdelco. Vendor #41-101. 3.4L. 3.5L. Iridium. 4.3L. Platinum. Vendor #41-921. 3.1L. 3.8L, without supercharged. Iridium is the... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Iridium Spark Plug
Part Number: 12683541
Other Names: Spark Plug More Names
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... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Conventional Spark Plug
Part Number: 96130723
Other Names: Spark Plug More Names
Description: 2007-08. Black Onyx coating helps reduce corrosion\ Copper core provides great heat transfer and helps maximize plug durability\ In... More Info
MSRP $12.18
$7.31
MSRP $12.18
$7.31
Spark Plug Wire
Part Number: 89017339
Other Names: Spark Plug Wire More Names
Description: Cylinder 3. G6. #3. 3.5l. 3.5L, #3 cyl. Durable to help transfer high voltage pulses without damage More Info
Notes: Included with plug wire set. More Notes
MSRP $20.46
$12.28
MSRP $20.46
$12.28
Spark Plug Wire
Part Number: 89018055
Other Names: Spark Plug Wire More Names
Description: Durable to help transfer high voltage pulses without damage More Info
MSRP $39.02
$23.41
MSRP $39.02
$23.41
Iridium Spark Plug
Part Number: 92457960
Other Names: Spark Plug More Names
Description: 3.6L, with bi-fuel. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components\... More Info
MSRP $15.00
$9.00
MSRP $15.00
$9.00
Iridium Spark Plug
Part Number: 94859448
Other Names: Spark Plug More Names
Description: Vendor #SK16R11. 1.8l without ho. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original... More Info
MSRP $25.34
$15.20
MSRP $25.34
$15.20
Conventional Spark Plug
Part Number: 19354430
Other Names: Spark Plug More Names
Replaces: 19300873
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Conventional Spark Plug
Part Number: 19300874
Other Names: Spark Plug More Names
Description: Standard. Vendor:acdelco. Vendor #R42TS. Black Onyx coating helps reduce corrosion\ \ Copper core provides great heat transfer and helps... More Info
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Spark Plug Assembly
Part Number: 19301805
Replaces: 19208527, 19244462
MSRP $12.18
$7.31
MSRP $12.18
$7.31
Conventional Spark Plug
Part Number: 19302723
Other Names: Spark Plug More Names
Description: Conventional. Vendor:acdelco. Black Onyx coating helps reduce corrosion\ Copper core provides great heat transfer and helps maximize... More Info
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Conventional Spark Plug
Part Number: 19302726
Other Names: Spark Plug More Names
Description: Aluminum Cylinder Head. Vendor:bosch. Vendor #FR3LS. Black Onyx coating helps reduce corrosion\ Copper core provides great heat transfer... More Info
MSRP $3.78
$2.27
MSRP $3.78
$2.27
Conventional Spark Plug
Part Number: 19302728
Other Names: Spark Plug More Names
Description: Black Onyx coating helps reduce corrosion\ \ Copper core provides great heat transfer and helps maximize plug durability\ \ Ribbed... More Info
MSRP $3.00
$1.80
MSRP $3.00
$1.80

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