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Spark Plugs - GM Genuine Parts

GM Parts PRODUCT FACTS

Find out more about the ACDelco Professional Platinum Spark Plug and how it fits into the Starting and Charging System with the product facts below.

Function:

Uses a high-voltage spark from the ignition coil to ignite the air/fuel mixture inside the engine’s cylinders.

Signs Of Wear & Troubleshooting:

Signs that your spark plugs need to be replaced:

  • Engine has trouble starting, hesitates or cuts out.
  • Sluggish engine performance, loss of engine power or decreased fuel economy.
  • Lack of acceleration or loss of speed when driving uphill.
  • Cracks in the upper or lower portion of the spark plug insulator.
  • Chipped or broken insulator tip.
  • Damaged spark plug boot.

 

What It Does:

The Starting and Charging System starts the engine, maintains the battery’s charge and provides power to the electrical accessories while the engine is running.

Good Maintenance Practices:

It is important to inspect spark plugs at regular intervals for signs of deterioration. Follow these steps for removing spark plugs for inspection, servicing or replacement:

  • Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use a spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
  • Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
  • Brush or air-blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from dirt when applying compressed air to spark plug wells.
  • Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
  • Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
  • Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace the incorrectly gapped ACDelco Professional Iridium Spark Plug with one that is correctly gapped.

FAQs:

Should I change my spark plugs every 3,000 miles?

  • No, it depends on what type of spark plug your vehicle requires. Refer to your Owner’s Manual or contact your vehicle’s manufacturer for more information.


Can changing my spark plugs improve my engine’s performance?

  • Yes, but spark plugs may not be the only factor impacting performance. Replacing old spark plugs may temporarily improve poor engine performance due to reduced demand on the ignition system. However, this is not the cure for poor engine performance caused by worn rings, faulty carburetion, worn distributor parts or other engine performance issues.


Should I change all of my vehicle’s spark plugs at the same time?

  • Yes, if it is the scheduled time for spark plug replacement. It may be OK to replace one spark plug if it was broken for any reason prior to scheduled maintenance.


Does a diesel engine require a different type of plug than a gas engine?

  • Yes. Diesel engines require glow plugs because diesel engine ignitions operate differently than gas engines. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for their cold starts.


Are ACDelco spark plugs pre-gapped?

  • Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.


When I replace my spark plugs, should I also replace my spark plug wires?

  • Not always. Refer to your vehicle Owner’s Manual or contact the manufacturer for more information.


How do spark plugs become fouled?

  • Certain engine conditions can cause oil, powder and carbon to collect on the spark plug, causing a misfire. See our list of Signs and Causes of Spark Plug Wear.


What is pre-ignition and can it damage my engine?

  • Yes, pre-ignition can cause serious damage to your engine. Pre-ignition happens when the spark plug is too hot and fires before the piston is in the correct position.


Can I just clean my spark plugs instead of replacing them?

  • No, cleaning your old spark plugs is not recommended. Dirty, fouled spark plugs may also have broken, chipped insulator tips, worn electrodes or worn or missing side wires. These conditions severely affect spark plug performance. Replace your dirty, fouled spark plugs with new ACDelco spark plugs.
Spark Plug
12673527
Other Names: F (S)Spark Plug More
Replaces: 12673528
Description: 1.5L turbo, ac delco markings. More
Fits:
  • Buick:
    • Cascada,
    • Encore
  • Chevrolet:
    • Cruze,
    • Equinox,
    • Malibu
  • GMC:
    • Terrain
  • 1 more
$13.56
$8.22
$13.56
$8.22
Spark Plug
12647827
Replaces: 12626906
Description: Coupe, 2.0L turbo. 2.5L, 2.0L turbo, 2.0L turbo. More
Fits:
  • Buick:
    • Envision,
    • Regal,
    • Regal Sportback,
    • Regal TourX
  • Cadillac:
    • ATS,
    • CT6,
    • CTS
  • Chevrolet:
    • Camaro,
    • Equinox,
    • Malibu,
    • Traverse
  • GMC:
    • Terrain
  • 7 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
12611882
Other Names: F (S)Spark Plug More
Fits:
  • Buick:
    • Enclave
  • GMC:
    • Acadia
  • Saturn:
    • Outlook
$11.90
$7.22
$11.90
$7.22
Spark Plug
19185432
Other Names: F (S)Spark Plug More
Description: 2.4L. 1.8l with ho. More
Fits:
  • Pontiac:
    • Vibe
$11.90
$7.22
$11.90
$7.22
Spark Plug
12681663
Replaces: 12625058
Description: 3.5L. 4.2L. 2.2L, 2007-08. 2.2L, 2004-06. 2.2L, 2007-10. Coupe, 2.2, 2.4L. 2.9, 3.7L, 2007-12. More
Fits:
  • Buick:
    • Rainier
  • Chevrolet:
    • Classic,
    • Cobalt,
    • Colorado,
    • HHR,
    • Malibu,
    • Trailblazer,
    • Trailblazer EXT
  • GMC:
    • Canyon,
    • Envoy,
    • Envoy XL,
    • Envoy XUV
  • Hummer:
    • H3,
    • H3T
  • Oldsmobile:
    • Alero,
    • Bravada
  • Pontiac:
    • G5,
    • G6,
    • Grand Am,
    • Solstice
  • Saturn:
    • Aura,
    • Ion,
    • Sky,
    • Vue
  • 19 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
24425327
Description: 3.0L. More
Fits:
  • Cadillac:
    • CTS
  • Saturn:
    • Vue
$11.02
$6.68
$11.02
$6.68
Spark Plug
19300875
Replaces: 19244463, 19244468
Description: Platinum. More
Fits:
  • Buick:
    • Regal
  • Cadillac:
    • 60 Special,
    • Commercial Chassis,
    • DeVille,
    • Eldorado,
    • Fleetwood,
    • Seville
  • 2 more
$11.02
$6.68
$11.02
$6.68
Spark Plug
19308031
Description: 2.4L. More
Fits:
  • Chevrolet:
    • Corvette
  • Pontiac:
    • Grand Am
$6.38
$3.90
$6.38
$3.90
Spark Plug
19301807
Replaces: 19244464, 19179571, 19301804
Fits:
  • Buick:
    • Century
  • Chevrolet:
    • Beretta,
    • Cavalier,
    • Corsica,
    • LLV,
    • Lumina,
    • S10
  • Oldsmobile:
    • Cutlass Ciera
  • Pontiac:
    • Sunfire
  • 4 more
$11.02
$6.68
$11.02
$6.68
Spark Plug
55504354
Description: 2.0L turbo. More
Fits:
  • Cadillac:
    • CT6,
    • XT4
$13.54
$8.21
$13.54
$8.21
Spark Plug
12650283
Other Names: F (S)Spark Plug More
Description: 3.0L twin-turbo. More
Fits:
  • Cadillac:
    • CT6
$11.90
$7.22
$11.90
$7.22
Spark Plug
12662396
Description: Coupe, 3.6L with twin-turbo. More
Fits:
  • Cadillac:
    • ATS,
    • CTS,
    • XTS
$11.90
$7.22
$11.90
$7.22
Spark Plug
19316339
Fits:
  • Chevrolet:
    • City Express
$21.68
$15.51
$21.68
$15.51
Spark Plug
55486272
Description: 1.8L. More
Fits:
  • Chevrolet:
    • Malibu
$11.90
$7.22
$11.90
$7.22
Spark Plug
12681656
Replaces: 55576026, 55585517
Description: 1.8L. 1.4L turbo. More
Fits:
  • Buick:
    • Encore
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic,
    • Trax
$11.90
$7.22
$11.90
$7.22
Spark Plug
19185438
Description: 1.8L. More
Fits:
  • Pontiac:
    • Vibe
$11.90
$7.22
$11.90
$7.22
Spark Plug
12592619
Description: 4.4 & 4.6L, 4.4L. More
Fits:
  • Cadillac:
    • STS,
    • XLR
$10.66
$6.47
$10.66
$6.47
Spark Plug
96130723
Description: 2007-08. More
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5
$11.02
$6.68
$11.02
$6.68
Spark Plug
94859448
Description: 1.8l without ho. More
Fits:
  • Chevrolet:
    • Prizm
  • Pontiac:
    • Vibe
$21.29
$12.69
$21.29
$12.69
Spark Plug
19301814
Positions: Left, Right
Replaces: 12565996
Description: 2.8 & 3.6L. 3.6L, 1st design. More
Fits:
  • Buick:
    • LaCrosse,
    • Rendezvous
  • Cadillac:
    • CTS,
    • SRX,
    • STS
$11.90
$7.22
$11.90
$7.22
Spark Plug
19301810
Replaces: 19244475, 19301822
Description: 3.4L. More
Fits:
  • Chevrolet:
    • C2500,
    • C3500,
    • Express 3500,
    • K2500 Pickup,
    • K3500 Pickup,
    • Malibu,
    • P30,
    • Suburban C2500,
    • Suburban K2500,
    • Venture
  • GMC:
    • C2500 Pickup,
    • C3500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P3500,
    • Savana 3500,
    • Suburban C2500,
    • Suburban K2500
  • Oldsmobile:
    • Alero,
    • Silhouette
  • Pontiac:
    • Aztek,
    • Grand Am,
    • Montana
  • 18 more
$11.02
$6.68
$11.02
$6.68
Spark Plug
19302723
Description: Conventional. More
Fits:
  • Buick:
    • Century,
    • LeSabre,
    • Park Avenue,
    • Regal,
    • Riviera,
    • Skylark
  • Chevrolet:
    • Lumina APV
  • Oldsmobile:
    • 88,
    • 98,
    • Achieva,
    • Cutlass Ciera,
    • Cutlass Cruiser,
    • Silhouette,
    • Toronado
  • Pontiac:
    • Bonneville,
    • Grand Am,
    • Trans Sport
  • 12 more
$9.36
$9.36
Spark Plug
19308033
Replaces: 19250971, 19238464
Description: 3.1L. 3.8L, without supercharged. More
Fits:
  • Buick:
    • Century
  • Chevrolet:
    • Corvette
  • Pontiac:
    • Grand Prix
$6.38
$3.90
$6.38
$3.90
Spark Plug
19302741
Fits:
  • Buick:
    • Commercial Chassis,
    • Roadmaster
  • Cadillac:
    • Brougham,
    • Commercial Chassis
  • Chevrolet:
    • Astro,
    • Blazer,
    • C1500,
    • C2500,
    • C3500,
    • Caprice,
    • G10,
    • G20,
    • G30,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P20,
    • P30,
    • R20,
    • R2500,
    • R30,
    • R3500,
    • S10,
    • S10 Blazer,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Suburban R10,
    • Suburban R1500,
    • Suburban R20,
    • Suburban R2500,
    • Suburban V10,
    • Suburban V1500,
    • Suburban V20,
    • Suburban V2500,
    • Tahoe,
    • V30,
    • V3500
  • GMC:
    • C1500 Pickup,
    • C2500 Pickup,
    • C3500 Pickup,
    • G1500,
    • G2500,
    • G3500,
    • Jimmy,
    • Jimmy S15,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P2500,
    • P3500,
    • R2500 Pickup,
    • R3500 Pickup,
    • S15,
    • Safari,
    • Sonoma,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Suburban R1500,
    • Suburban R2500,
    • V1500 Suburban,
    • V2500 Suburban,
    • V3500,
    • Yukon
  • Oldsmobile:
    • Bravada,
    • Custom Cruiser
  • 64 more
$9.36
$9.36
Spark Plug
12637197
Fits:
  • Chevrolet:
    • Spark,
    • Volt
$11.90
$7.22
$11.90
$7.22
Spark Plug
12674112
Description: 1.4L, acdelco # 1267411. More
Fits:
  • Chevrolet:
    • Cruze
$11.90
$7.22
$11.90
$7.22
Spark Plug
12680074
Replaces: 12627160
Description: Sedan, 2.5L, 2.0L turbo, 2.5L. More
Fits:
  • Buick:
    • Envision,
    • LaCrosse
  • Cadillac:
    • ATS
  • Chevrolet:
    • Colorado,
    • Impala,
    • Malibu,
    • Malibu Limited
  • GMC:
    • Acadia,
    • Canyon
  • 4 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
92457960
Other Names: F (S)Spark Plug More
Description: 3.6L, with bi-fuel. More
Fits:
  • Chevrolet:
    • Impala
$11.90
$7.22
$11.90
$7.22
Spark Plug
12642791
Description: 3.6L, with twin-turbo. More
Fits:
  • Cadillac:
    • CTS,
    • XTS
$11.90
$7.22
$11.90
$7.22
Spark Plug
12620540
Description: 3.0L. 2.4L. 2.0L turbocharged. More
Fits:
  • Buick:
    • LaCrosse,
    • Regal,
    • Verano
  • Chevrolet:
    • Captiva Sport,
    • Cobalt,
    • Equinox,
    • HHR,
    • Impala,
    • Malibu
  • GMC:
    • Terrain
  • Pontiac:
    • Solstice
  • Saturn:
    • Sky
  • 7 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
12571165
Description: 7.0L. Wagon, 6.2L. 6.2L with supercharger. 6.2L with supercharged. More
Fits:
  • Cadillac:
    • CTS
  • Chevrolet:
    • Camaro,
    • Corvette
$11.90
$7.22
$11.90
$7.22
Spark Plug
55564962
Fits:
  • Chevrolet:
    • Volt
$11.90
$7.22
$11.90
$7.22
Spark Plug
19417055
Description: 4.8, 5.3 & 6.0L. More
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
  • 1 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
12681662
Positions: Left, Right
Replaces: 12591131
Description: 3.5L. 3.5 & 3.9L. More
Fits:
  • Buick:
    • Lucerne,
    • Terraza
  • Chevrolet:
    • Impala,
    • Malibu,
    • Monte Carlo,
    • Uplander
  • Pontiac:
    • G6,
    • Montana
  • Saturn:
    • Aura,
    • Relay,
    • Vue
  • 6 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
95519058
Replaces: 93176801
Fits:
  • Saturn:
    • Astra
$11.02
$6.68
$11.02
$6.68
Spark Plug
12582002
Description: 3.5L. More
Fits:
  • Saturn:
    • Vue
$26.92
$16.05
$26.92
$16.05
Spark Plug
19299585
Description: 4.8, 5.3 & 6.0L. More
Fits:
  • Chevrolet:
    • Avalanche 1500,
    • Express 1500,
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
  • 2 more
$11.02
$6.68
$11.02
$6.68
Spark Plug
19256067
Positions: Left, Right
Description: 5.7L. 5.3L. Platinum. 5.3, 6.0L. Vendor #41-993. Vendor:acdelco. 4.3L, 2003-2007. 4.3L, 2008-2014. 4.8, 5.3, 6.0 & 6.2L. More
Fits:
  • Buick:
    • LaCrosse,
    • Rainier
  • Cadillac:
    • CTS,
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Astro,
    • Avalanche 1500,
    • Avalanche 2500,
    • Blazer,
    • C1500,
    • C2500,
    • C3500,
    • Corvette,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • Impala,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • Monte Carlo,
    • P30,
    • S10,
    • Silverado 1500,
    • Silverado 1500 Classic,
    • Silverado 2500,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban 1500,
    • Suburban 2500,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Tahoe
  • GMC:
    • C1500 Pickup,
    • C2500 Pickup,
    • C3500 Pickup,
    • Jimmy,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P3500,
    • Safari,
    • Savana 1500,
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 1500 Classic,
    • Sierra 2500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Sonoma,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H3
  • Oldsmobile:
    • Bravada
  • Pontiac:
    • Firebird,
    • G8,
    • Grand Prix,
    • GTO
  • 62 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
19300384
Replaces: 19157992
Description: 4.3L, 2003-2007. More
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
  • 13 more
$9.36
$9.36
Spark Plug
19301811
Replaces: 19301320
Description: 2.4L. More
Fits:
  • Chevrolet:
    • Cavalier,
    • Corvette,
    • Malibu
  • Oldsmobile:
    • Alero
  • Pontiac:
    • Grand Am,
    • Sunfire
  • 1 more
$11.02
$6.68
$11.02
$6.68
Spark Plug
12688094
Other Names: F (S)Spark Plug More
Description: 2.7L turbo. More
Fits:
  • Chevrolet:
    • Silverado 1500
  • GMC:
    • Sierra 1500
$13.54
$8.21
$13.54
$8.21
Spark Plug
12622441
Description: 5.3 & 6.2L. 4.3L, 2018-19. 6.2L, without supercharger. More
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Camaro,
    • Corvette,
    • Express 2500,
    • Express 3500,
    • Silverado 1500,
    • Silverado 1500 LD,
    • Suburban,
    • Tahoe
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 1500 Limited,
    • Yukon,
    • Yukon XL
  • 11 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
12642722
Description: 6.2L supercharged. With supercharger. More
Fits:
  • Cadillac:
    • CTS
  • Chevrolet:
    • Camaro,
    • Corvette
$11.90
$7.22
$11.90
$7.22
Spark Plug
12646780
Description: Coupe, 3.6L without twin-turbo. More
Fits:
  • Buick:
    • LaCrosse,
    • Regal Sportback
  • Cadillac:
    • ATS,
    • CT6,
    • CTS,
    • XT5
  • Chevrolet:
    • Blazer,
    • Camaro,
    • Colorado
  • GMC:
    • Acadia,
    • Canyon
  • 6 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
12683541
Replaces: 55490097
Description: 1.4L, acdelco # 41-151. 1.4L, acdelco # 1267411. 1.5L turbo, ac delco markings. More
Fits:
  • Buick:
    • Cascada,
    • Encore
  • Chevrolet:
    • Cruze,
    • Equinox,
    • Malibu
  • GMC:
    • Terrain
  • 1 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
12680072
Description: 4.8, 5.3 & 6.0L. More
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche,
    • Avalanche 1500,
    • Camaro,
    • Caprice,
    • Colorado,
    • Corvette,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • 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,
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H3,
    • H3T
  • Pontiac:
    • G8
  • 29 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
55585534
Replaces: 55580961
Description: 1.8L. More
Fits:
  • Cadillac:
    • ELR
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic,
    • Volt
$11.90
$7.22
$11.90
$7.22
Spark Plug
12681660
Replaces: 12622561
Description: 3.0L & 3.6L. Wagon, 3.0, 3.6L. 3.6L, 2nd design. 3.6L, without bi-fuel. 3.6L, without twin-turbo. More
Fits:
  • Buick:
    • Enclave,
    • LaCrosse
  • Cadillac:
    • ATS,
    • CTS,
    • SRX,
    • STS,
    • XTS
  • Chevrolet:
    • Camaro,
    • Caprice,
    • Captiva Sport,
    • Colorado,
    • Equinox,
    • Impala,
    • Impala Limited,
    • Malibu,
    • Traverse
  • GMC:
    • Acadia,
    • Acadia Limited,
    • Canyon,
    • Terrain
  • Saturn:
    • Aura,
    • Outlook,
    • Vue
  • 18 more
$11.90
$7.22
$11.90
$7.22
Spark Plug
25190786
Replaces: 25181358
Fits:
  • Chevrolet:
    • Spark,
    • Spark EV
$11.90
$7.22
$11.90
$7.22
Spark Plug
55564748
Description: 2.8L. More
Fits:
  • Cadillac:
    • SRX
$19.59
$11.89
$19.59
$11.89