Original GM Spark Plugs

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What Do Spark Plugs Do?

They ignite the mixture of oxygen and fuel a vehicle's engine needs to burn for power.

How Do Spark Plugs Work?

The process, called spark ignition, starts when the key turns in the ignition lock cylinder and the ignition switch trips. The car battery, plus other ignition parts, like a starter motor, a starter solenoid, and an ignition coil, then start to generate electricity. The charge travels to the plugs' leads, which capture it, and combustion occurs. The engine's pistons then begin to pump, and its crankshaft turns. The vehicle then starts and, thanks to the alternator, remains running.

In short, no engine could start at all, let alone run, without spark plugs.

What are the Symptoms of Spark Plugs Going Bad?

  • Corrosion
  • Widening leads
  • Inferior conductivity
  • Hard starts
  • A marked drop in fuel economy
  • Engine misfires
  • Idling roughly
  • Problems speeding up
  • Physical deterioration and breakage

When Should Spark Plugs Be Changed?

If you see any of the aforementioned signs, or if an engine inspection's results suggest you need to replace them. Otherwise, be sure to make the change before they surpass the kilometrage limits specified in your owner's manual.

Why Buy Genuine OEM Spark Plugs?

They're built to fit a brand's cars , trucks, and SUVs specifically. In other words, they'll be compatible with your model, guaranteed.

Where Can I Order Replacement Spark Plugs?

Online, right here at our auto parts store. They'll come straight from your OEM, too. We carry the copper, platinum, and iridium kind, both regular and extended-life. Just browse our inventory by make, model, and year to find those that fit what you drive. Buy now, and we'll ship on the double, directly to your address.

Spark Plug
Part Number: 12672175
Other Names: Iridium Spark Plug More Names
Description: 4.2L twin-turbo. More Info
MSRP $19.88 CAD
$12.30 CAD
MSRP $19.88 CAD
$12.30 CAD
Spark Plug
Part Number: 12680074
Other Names: Iridium Spark Plug More Names
Replaces: 12627160
Description: 2016-20, 2.5L. Sedan, 2.5L, 2.0L turbo, 2.5L. More Info
MSRP $17.88 CAD
$11.08 CAD
MSRP $17.88 CAD
$11.08 CAD
Spark Plug
Part Number: 12681664
Options: Left, Right
Other Names: Iridium Spark Plug More Names
Replaces: 12565030, 12568387, 24504873, 25161444, 25330840
Description: Vendor:acdelco. Vendor #41-101. 3.4L. 3.5L. Iridium. 4.3L. Platinum. Vendor #41-921. 3.1L. 3.8L, without supercharged. More Info
MSRP $19.55 CAD
$12.10 CAD
MSRP $19.55 CAD
$12.10 CAD
Spark Plug
Part Number: 12688094
Other Names: Iridium Spark Plug More Names
Description: 2.7L turbo. 1.3L turbo. More Info
MSRP $22.68 CAD
$14.03 CAD
MSRP $22.68 CAD
$14.03 CAD
Spark Plug
Part Number: 12556183
Other Names: Double Platinum Spark Plug More Names
Description: Platinum. More Info
MSRP $20.97 CAD
$12.98 CAD
MSRP $20.97 CAD
$12.98 CAD
Spark Plug
Part Number: 12571533
Description: 4.4 & 4.6L, 4.6L. More Info
MSRP $20.87 CAD
$12.91 CAD
MSRP $20.87 CAD
$12.91 CAD
Spark Plug
Part Number: 12582002
Description: 3.5L. More Info
MSRP $37.27 CAD
$26.11 CAD
MSRP $37.27 CAD
$26.11 CAD
Spark Plug
Part Number: 12621258
Replaces: 12563707, 12571164, 12609877
Description: Vendor:acdelco. Vendor #41-985. 6.0L. 5.3L. 6.2L without supercharger. Iridium. 6.0 & 6.2L. More Info
MSRP $19.55 CAD
$12.10 CAD
MSRP $19.55 CAD
$12.10 CAD
Spark Plug
Part Number: 12650283
Other Names: Iridium Spark Plug More Names
Description: 3.0L. More Info
MSRP $20.54 CAD
$12.74 CAD
MSRP $20.54 CAD
$12.74 CAD
Spark Plug
Part Number: 12664824
Other Names: Iridium Spark Plug More Names
MSRP $37.67 CAD
$23.30 CAD
MSRP $37.67 CAD
$23.30 CAD
Spark Plug
Part Number: 21025102
Other Names: Conventional Spark Plug More Names
Replaces: 21021362, 21024774
MSRP $7.50 CAD
$5.49 CAD
MSRP $7.50 CAD
$5.49 CAD
Spark Plug
Part Number: 19300382
Other Names: Conventional Spark Plug More Names
Replaces: 19157983
Description: Standard. Vendor:acdelco. Vendor #R43TS. Cast Iron Cylinder Head. More Info
MSRP $5.89 CAD
$3.66 CAD
MSRP $5.89 CAD
$3.66 CAD
Spark Plug
Part Number: 19300874
Other Names: Conventional Spark Plug More Names
Replaces: 19157982
Description: Vendor:acdelco. Vendor #R42TS. Standard. More Info
MSRP $7.45 CAD
$4.64 CAD
MSRP $7.45 CAD
$4.64 CAD
Spark Plug
Part Number: 19301808
Other Names: Double Platinum Spark Plug More Names
Replaces: 19158032, 19208524, 19244465
Description: Platinum. Vendor:acdelco. Vendor #41-906. More Info
MSRP $20.47 CAD
$12.68 CAD
MSRP $20.47 CAD
$12.68 CAD
Spark Plug
Part Number: 19301811
Other Names: Double Platinum Spark Plug More Names
Replaces: 19158035, 19158040, 19208528, 19208532, 19244470, 19244471, 19301320, 25178637
Description: 2.4L. Platinum. Vendor:acdelco. Vendor #41-913. More Info
MSRP $19.91 CAD
$12.31 CAD
MSRP $19.91 CAD
$12.31 CAD
Spark Plug
Part Number: 19302741
Other Names: Conventional Spark Plug More Names
Replaces: 19157996
Description: Optional. Vendor:acdelco. Vendor #cr43tsm. Standard. More Info
MSRP $5.90 CAD
$3.66 CAD
MSRP $5.90 CAD
$3.66 CAD
Spark Plug
Part Number: 19308034
Other Names: Double Platinum Spark Plug More Names
Replaces: 19250973, 19250994, 88901031
Description: Platinum. More Info
MSRP $15.04 CAD
$9.33 CAD
MSRP $15.04 CAD
$9.33 CAD
Spark Plug
Part Number: 19354418
Other Names: Conventional Spark Plug More Names
Replaces: 19157998, 19302729
Description: Optional. Vendor:acdelco. Vendor #r44ltsm. Standard. Vendor #r43ltse. More Info
MSRP $5.49 CAD
$3.41 CAD
MSRP $5.49 CAD
$3.41 CAD
Spark Plug
Part Number: 19354429
Other Names: Conventional Spark Plug More Names
Replaces: 19302724, 5614167, 5614257, 91171719, 96068563, 5614285
Description: Standard. Vendor:acdelco. Vendor #41-602. Vendor:NGK. Vendor #BKR6E. Vendor:nippon. Vendor #K20PR-U. More Info
MSRP $5.05 CAD
$3.15 CAD
MSRP $5.05 CAD
$3.15 CAD
Spark Plug
Part Number: 19355205
Other Names: Conventional Spark Plug More Names
Replaces: 19158000, 19301655
Description: Standard. More Info
MSRP $6.01 CAD
$3.74 CAD
MSRP $6.01 CAD
$3.74 CAD
Spark Plug
Part Number: 19362247
Other Names: Conventional Spark Plug More Names
Replaces: 19302726, 5613796, 5614286, 88901233
Description: Standard. Aluminum Cylinder Head. Vendor:bosch. Vendor #FR3LS. More Info
MSRP $5.15 CAD
$3.19 CAD
MSRP $5.15 CAD
$3.19 CAD
Spark Plug
Part Number: 55486272
Other Names: Iridium Spark Plug More Names
Description: 1.8L. More Info
MSRP $20.54 CAD
$12.74 CAD
MSRP $20.54 CAD
$12.74 CAD
Spark Plug
Part Number: 55564748
Other Names: Iridium Spark Plug More Names
Description: 2.8L. More Info
MSRP $32.07 CAD
$24.30 CAD
MSRP $32.07 CAD
$24.30 CAD
Spark Plug
Part Number: 05613878
MSRP $4.74 CAD
$2.98 CAD
MSRP $4.74 CAD
$2.98 CAD
Spark Plug
Part Number: 05613882
Replaces: 5613881
MSRP $5.00 CAD
$3.10 CAD
MSRP $5.00 CAD
$3.10 CAD
Spark Plug
Part Number: 12646780
Other Names: Iridium Spark Plug More Names
Description: Coupe, 3.6L without twin-turbo. Sedan, 3.6L, 3.6L twin-turbo, without twin-turbo. More Info
MSRP $18.75 CAD
$11.59 CAD
MSRP $18.75 CAD
$11.59 CAD
Spark Plug
Part Number: 12680072
Other Names: Iridium Spark Plug More Names
Description: 6.0L. Iridium. Vendor:acdelco. Vendor #41-985. More Info
MSRP $18.77 CAD
$11.59 CAD
MSRP $18.77 CAD
$11.59 CAD
Spark Plug
Part Number: 12680075
Other Names: Iridium Spark Plug More Names
Replaces: 12610767, 12787099
Description: 2.0L. More Info
MSRP $21.45 CAD
$13.30 CAD
MSRP $21.45 CAD
$13.30 CAD
Spark Plug
Part Number: 12681655
Other Names: Iridium Spark Plug More Names
Replaces: 55564962, 55580961, 55585534
Description: 1.8L. More Info
MSRP $21.45 CAD
$13.25 CAD
MSRP $21.45 CAD
$13.25 CAD
Spark Plug
Part Number: 12681660
Other Names: Iridium Spark Plug More Names
Replaces: 12622561
Description: 3.6L, without bi-fuel. 3.0L. Sedan, 3.0 & 3.6L. 3.6L, without twin-turbo. 3.6L, 2nd design. Wagon, 3.0, 3.6L. More Info
MSRP $17.89 CAD
$13.15 CAD
MSRP $17.89 CAD
$13.15 CAD
Spark Plug
Part Number: 12681663
Other Names: Iridium Spark Plug More Names
Replaces: 12598004, 12625058
MSRP $19.14 CAD
$11.88 CAD
MSRP $19.14 CAD
$11.88 CAD
Spark Plug
Part Number: 12578277
Replaces: 12561454
Description: Vendor:acdelco. Vendor #41-983. 8.1L. More Info
MSRP $18.69 CAD
$11.58 CAD
MSRP $18.69 CAD
$11.58 CAD
Spark Plug
Part Number: 88901021
Description: Platinum. More Info
MSRP $16.81 CAD
$10.38 CAD
MSRP $16.81 CAD
$10.38 CAD
Spark Plug
Part Number: 24425327
Other Names: Double Platinum Spark Plug More Names
Description: 3.0L. More Info
MSRP $19.50 CAD
$12.09 CAD
MSRP $19.50 CAD
$12.09 CAD
Spark Plug
Part Number: 21025103
Other Names: Conventional Spark Plug More Names
Replaces: 21024775
Description: Standard. More Info
MSRP $6.87 CAD
$5.06 CAD
MSRP $6.87 CAD
$5.06 CAD
Spark Plug
Part Number: 19185432
Other Names: Iridium Spark Plug More Names
Replaces: 88969636
Description: 2.4L. 1.8l with ho. More Info
MSRP $27.15 CAD
$16.80 CAD
MSRP $27.15 CAD
$16.80 CAD
Spark Plug
Part Number: 19300872
Options: Left, Right
Other Names: Double Platinum Spark Plug More Names
Replaces: 12597464
Description: Platinum. Vendor:acdelco. Vendor #41-990. 2.8 & 3.6L. 3.0 & 3.6L. 2nd Design. More Info
MSRP $20.97 CAD
$12.98 CAD
MSRP $20.97 CAD
$12.98 CAD
Spark Plug
Part Number: 19300875
Other Names: Double Platinum Spark Plug More Names
Replaces: 19158029, 19158033, 19207828, 19208525, 19244463, 19244468
Description: Platinum. More Info
MSRP $18.37 CAD
$11.35 CAD
MSRP $18.37 CAD
$11.35 CAD
Spark Plug
Part Number: 19301812
Other Names: Double Platinum Spark Plug More Names
Replaces: 19158038, 19208530, 19244472, 25165715
Description: Platinum. More Info
MSRP $17.61 CAD
$10.89 CAD
MSRP $17.61 CAD
$10.89 CAD
Spark Plug
Part Number: 19307139
Other Names: Rapidfire Spark Plug More Names
Replaces: 19145283, 19238452, 19250960, 25164639
Description: Exc.Police. Exc.Taxi. Platinum. Vendor:acdelco. Vendor #CR43TS. More Info
MSRP $11.19 CAD
$6.90 CAD
MSRP $11.19 CAD
$6.90 CAD
Spark Plug
Part Number: 19308030
Other Names: Rapidfire Spark Plug More Names
Replaces: 19145287, 19238456, 19250964, 25164643
Description: Rapid Fire. Vendor:acdelco. Vendor #5. More Info
MSRP $10.61 CAD
$6.55 CAD
MSRP $10.61 CAD
$6.55 CAD
Spark Plug
Part Number: 19308031
Other Names: Rapidfire Spark Plug More Names
Replaces: 19145290, 19238459, 19250967, 25171347
Description: 2.4L. Rapid Fire. Vendor:acdelco. Vendor #8. More Info
MSRP $10.64 CAD
$6.58 CAD
MSRP $10.64 CAD
$6.58 CAD
Spark Plug
Part Number: 19308033
Other Names: Rapidfire Spark Plug More Names
Replaces: 19145295, 19238464, 19250971, 25332828
Description: Rapid Fire. Vendor:acdelco. Vendor #14. 3.8L, without supercharged. 3.1L. More Info
MSRP $11.19 CAD
$6.90 CAD
MSRP $11.19 CAD
$6.90 CAD
Spark Plug
Part Number: 19366108
Other Names: Spark Plug Assembly More Names
Replaces: 19310637, 5614000, 88901234
MSRP $5.15 CAD
$3.19 CAD
MSRP $5.15 CAD
$3.19 CAD
Spark Plug
Part Number: 19185438
Other Names: Iridium Spark Plug More Names
Description: 1.8L. More Info
MSRP $21.34 CAD
$16.80 CAD
MSRP $21.34 CAD
$16.80 CAD
Spark Plug
Part Number: 19208523
Replaces: 19158031
Description: Police. Taxi. Vendor:acdelco. Vendor #CR43TS. Platinum. More Info
MSRP $18.88 CAD
$11.71 CAD
MSRP $18.88 CAD
$11.71 CAD
Spark Plug
Part Number: 19299585
Other Names: Double Platinum Spark Plug More Names
Description: 4.8, 5.3 & 6.0L. Vendor:acdelco. Vendor #41-962. More Info
MSRP $18.36 CAD
$11.35 CAD
MSRP $18.36 CAD
$11.35 CAD
Spark Plug
Part Number: 19301813
Other Names: Double Platinum Spark Plug More Names
Replaces: 19158036, 19158039, 19208529, 19208531, 19244473, 19244474, 19301321, 25163148, 25166821
Description: 3.4L. Platinum. Vendor:acdelco. Vendor #41-943. Vendor #41-940. More Info
MSRP $17.62 CAD
$10.89 CAD
MSRP $17.62 CAD
$10.89 CAD
Spark Plug
Part Number: 19301814
Options: Left, Right
Other Names: Iridium Spark Plug More Names
Replaces: 12565996, 19256624
Description: 3.6L, 1st design. More Info
MSRP $21.21 CAD
$13.13 CAD
MSRP $21.21 CAD
$13.13 CAD
Spark Plug
Part Number: 19302728
Other Names: Conventional Spark Plug More Names
Replaces: 19158001
MSRP $5.75 CAD
$3.56 CAD
MSRP $5.75 CAD
$3.56 CAD

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