How to replace spark plugs on Chevrolet Caprice?

The spark plugs are located on both sides of the engine and their accessibility for removal may vary, especially if the car is equipped with air conditioning or power steering, potentially requiring special extension or swivel tools. It is advisable to look under the hood and ascertain whether those things are needed. The tools that are generally needed to replace the spark plug include a plug wrench or spark plug socket insulated for porcelain insulator as well as a feeler gauge for checking and adjusting spark plug gap. For vehicles with HEl ignition (from 1975 to 1981), there is a particular spark plug wire removing tool that you can use to detach the boot from the connector itself. It's recommended to go ahead and purchase new spark plugs, adjust their gap as specified, and replace each one separately. Before removing old spark plugs, let them cool down; check new ones for defects while using feeler gauges for testing gaps; cover fenders with cloths or cardboard paper so that they would not be marked by paint; after cooling off engine, take off one of wires twisting it until it can be removed; use compressed air or pump up bicycle tire so that no dirt remains near places where sparks ignite fuel. Then remove the spark plug in a counterclockwise direction by turning it with spanner or socket in anti-clockwise rotation according to the chart provided below. Insert a new plug, screw it in by hand then tighten using a torque wrench per Service Specifications. Look through spark plug wire before attaching it onto new plug: make sure it fits tightly twisting around; do not touch hot exhaust manifold while doing this operation at any cost. Repeat these steps for rest of plugs replacing them one by one to avoid confusion of leads.

OEM Chevrolet Spark Plug

Ignition Spark Plug

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54 Spark Plugs found

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Chevrolet Spark Plug Part Number: 96130723
$7.57 MSRP: $13.52
You Save: $5.95 (45%)
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Product Specifications
- Other Name: Spark Plug,Glow
Fits the following Chevrolet Models:
- Aveo | 2004-2008 | Base, LS, LT, Special Value | 4 Cyl 1.6 L GAS
- Aveo5 | 2007-2008 | LS, Special Value | 4 Cyl 1.6 L GAS
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Chevrolet Spark Plug Part Number: 25190786
$9.07 MSRP: $16.20
You Save: $7.13 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
- Replaces: 25181358
Fits the following Chevrolet Models:
- Spark | 2013-2015 | LS, LT | 4 Cyl 1.2 L GAS
- Spark EV | 2014-2015 | LT | BATTERY EV (EV/BEV)
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Chevrolet Spark Plug Part Number: 12681665
$9.45 MSRP: $16.88
You Save: $7.43 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaced by: 12681664
Fits the following Chevrolet Models:
- Astro | 1996-2005 | Base, LS, LT | 6 Cyl 4.3 L GAS
- Avalanche 1500 | 2002-2006 | Base, LS, LT, North Face, On Road Edition, WBH, Z66, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Avalanche 2500 | 2002-2006 | Base, LS, LT | 8 Cyl 8.1 L GAS
- Corvette | 1997-2004 | 50th Anniversary Edition, 50th Anniversary Edition Pace Car, Base, Indianapolis 500 Pace Car, Z06 | 8 Cyl 5.7 L GAS
- Express 1500 | 2007-2009 | Base | 6 Cyl 4.3 L GAS
- Impala | 2006-2008 | SS | 8 Cyl 5.3 L GAS
- Monte Carlo | 2006-2007 | SS | 8 Cyl 5.3 L GAS
- Silverado 1500 | 2007-2009 | LS, LT, LTZ, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Silverado 2500 HD | 2007-2008 | LT, LTZ, WT | 8 Cyl 6.0 L GAS
- Silverado 3500 HD | 2007-2008 | LT, LTZ, WT | 8 Cyl 6.0 L GAS
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Chevrolet Spark Plug Part Number: 12681664
$9.45 MSRP: $16.88
You Save: $7.43 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12568387, 12607234, 12681665, 25315018, 25330840, 19256067, 25161444, 25162555, 89017883, 25162556, 12565030
Fits the following Chevrolet Models:
- Astro | 1996-2005 | Base, LS, LT | 6 Cyl 4.3 L GAS
- Avalanche 1500 | 2002-2006 | Base, LS, LT, North Face, On Road Edition, WBH, Z66, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Avalanche 2500 | 2002-2006 | Base, LS, LT | 8 Cyl 8.1 L GAS
- Corvette | 1997-2004 | 50th Anniversary Edition, 50th Anniversary Edition Pace Car, Base, Indianapolis 500 Pace Car, Z06 | 8 Cyl 5.7 L GAS
- Equinox | 2005-2009 | LS, LT, LTZ | 6 Cyl 3.4 L GAS
- Express 1500 | 2007-2014 | Base | 6 Cyl 4.3 L GAS
- Impala | 2006-2008 | SS | 8 Cyl 5.3 L GAS
- Malibu | 2004-2006 | LS, LT, LTZ, Maxx, Maxx LS, Maxx LT, Maxx LTZ, Maxx SS, SS | 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L GAS
- Monte Carlo | 2000-2007 | LT, SS, SS 35th Anniversary Edition, SS Dale Earnhardt Signature Edition, SS High Sport, SS Pace Car | 6 Cyl 3.8 L GAS, 8 Cyl 5.3 L GAS
- Silverado 1500 | 2007-2013 | LS, LT, LTZ, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Spark Plug Part Number: 12681660
$9.45 MSRP: $16.88
You Save: $7.43 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12622561
Fits the following Chevrolet Models:
- Camaro | 2010-2015 | LS, LT | 6 Cyl 3.6 L GAS
- Caprice | 2012-2017 | PPV | 6 Cyl 3.6 L FLEX
- Captiva Sport | 2012 | LT, LTZ | 6 Cyl 3.0 L FLEX
- Colorado | 2015-2016 | LT, WT, Z71 | 6 Cyl 3.6 L GAS
- Equinox | 2010-2017 | LT, LTZ, Premier | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- Impala | 2012-2020 | LS, LT, LTZ, Police, Premier | 6 Cyl 3.6 L BI-FUEL, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- Impala Limited | 2014-2016 | LS, LT, LTZ, Police | 6 Cyl 3.6 L FLEX
- Malibu | 2010-2012 | LT, LTZ | 6 Cyl 3.6 L GAS
- Traverse | 2009-2023 | High Country, L, LS, LT, LTZ, Premier, RS | 6 Cyl 3.6 L GAS
- Traverse Limited | 2024 | High Country, LS, LT, Premier, RS | 6 Cyl 3.6 L GAS
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Chevrolet Spark Plug Part Number: 12681658
$9.45 MSRP: $16.88
You Save: $7.43 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 12620540, 12617309, 12590701
Fits the following Chevrolet Models:
- Captiva Sport | 2012-2015 | LS, LT, LTZ | 4 Cyl 2.4 L FLEX
- Cobalt | 2008-2010 | SS | 4 Cyl 2.0 L GAS
- Equinox | 2010-2017 | L, LS, LT, LTZ, Premier | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
- HHR | 2008-2010 | SS, SS Panel | 4 Cyl 2.0 L GAS
- Impala | 2014 | Eco | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
- Malibu | 2013-2014 | Eco | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Chevrolet Spark Plug Part Number: 12680072
$9.45 MSRP: $16.88
You Save: $7.43 (45%)
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
Fits the following Chevrolet Models:
- Express 1500 | 2011-2014 | Base, LS, LT | 8 Cyl 5.3 L FLEX
- Express 2500 | 2011-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Express 3500 | 2011-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Silverado 2500 HD | 2015-2019 | High Country, LT, LTZ, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Silverado 3500 HD | 2015-2019 | High Country, LT, LTZ, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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Chevrolet Spark Plug Part Number: 12637197
$9.54 MSRP: $17.04
You Save: $7.50 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
Fits the following Chevrolet Models:
- Spark | 2016-2022 | ACTIV, LS, LT | 4 Cyl 1.4 L GAS
- Volt | 2016-2019 | LT, Premier | 4 Cyl 1.5 L PLUG-IN HYBRID EV-GAS (PHEV)
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Chevrolet Spark Plug Part Number: 12683541
$9.64 MSRP: $17.22
You Save: $7.58 (45%)
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 55490097
Fits the following Chevrolet Models:
- Cruze | 2016-2019 | L, LS, LT, Premier | 4 Cyl 1.4 L GAS
- Equinox | 2018-2025 | ACTIV, L, LS, LT, Premier, RS | 4 Cyl 1.5 L GAS
- Malibu | 2019-2025 | L, LS, LT, RS | 4 Cyl 1.5 L GAS
- Trailblazer | 2021-2025 | L, LS, LT | 3 Cyl 1.2 L FLEX, 3 Cyl 1.2 L GAS
- Trax | 2024-2025, 2021-2022 | ACTIV, LS, LT, RS | 3 Cyl 1.2 L FLEX, 3 Cyl 1.2 L GAS, 4 Cyl 1.4 L GAS
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Chevrolet Spark Plug Part Number: 12622441
$9.70 MSRP: $17.32
You Save: $7.62 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
Fits the following Chevrolet Models:
- Camaro | 2016-2024 | LT1, SS | 8 Cyl 6.2 L GAS
- Corvette | 2014-2019 | Grand Sport, Stingray, Z06, ZR1 | 8 Cyl 6.2 L GAS
- Express 2500 | 2018-2025 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
- Express 3500 | 2018-2025 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
- Silverado 1500 | 2014-2025 | Custom, Custom Trail Boss, High Country, LS, LT, LT Trail Boss, LTZ, PPV, RST, SSV, WT, ZR2 | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
- Silverado 1500 LD | 2019 | Custom, LT, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Silverado 1500 LTD | 2022 | Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, SSV, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
- Silverado 2500 HD | 2020-2025 | Custom, High Country, LT, LTZ, WT, ZR2 | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Silverado 3500 HD | 2020-2025 | High Country, LT, LTZ, WT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Suburban | 2015-2025 | Commercial, High Country, LS, LT, LTZ, Premier, RST, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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Chevrolet Spark Plug Part Number: 12681661
$9.73 MSRP: $17.38
You Save: $7.65 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 12607280
Fits the following Chevrolet Models:
- Cobalt | 2005-2006 | Base, LS, LT, LTZ | 4 Cyl 2.2 L GAS
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Chevrolet Spark Plug Part Number: 12681655
$9.84 MSRP: $17.58
You Save: $7.74 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 55580961, 55585534, 55564962
Fits the following Chevrolet Models:
- Cruze | 2011-2015 | L, LS | 4 Cyl 1.8 L FLEX, 4 Cyl 1.8 L GAS
- Cruze Limited | 2016 | L, LS | 4 Cyl 1.8 L FLEX, 4 Cyl 1.8 L GAS
- Sonic | 2013-2018 | LS, LT, LTZ | 4 Cyl 1.8 L FLEX, 4 Cyl 1.8 L GAS
- Volt | 2011-2015 | Base | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Chevrolet Spark Plug Part Number: 19417055
$9.89 MSRP: $17.66
You Save: $7.77 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly, Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
Fits the following Chevrolet Models:
- Express 1500 | 2008-2010 | Base, LS, LT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Express 2500 | 2008-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Express 3500 | 2008-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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Chevrolet Spark Plug Part Number: 19316339
$17.75 MSRP: $31.70
You Save: $13.95 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug,Glow
Fits the following Chevrolet Models:
- City Express | 2015-2018 | LS, LT | 4 Cyl 2.0 L GAS
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Chevrolet Glow Plug Part Number: 97226202
$19.63 MSRP: $35.06
You Save: $15.43 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug, Spark Ignition
Fits the following Chevrolet Models:
- Avalanche 1500 | 2002-2003 | Base, North Face, On Road Edition, WBH, Z71 | 8 Cyl 5.3 L GAS
- Avalanche 2500 | 2002-2003 | Base | 8 Cyl 8.1 L GAS
- Silverado 1500 | 2001-2003 | Base, LS, LT, SS, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Silverado 1500 HD | 2001-2003 | LS, LT | 8 Cyl 6.0 L GAS
- Silverado 2500 | 2001-2003 | Base, LS, LT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Silverado 2500 HD | 2001-2003 | Base, LS, LT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Silverado 3500 | 2001-2003 | Base, LS, LT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Suburban 1500 | 2001-2003 | Base, LS, LT, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Suburban 2500 | 2001-2003 | Base, LS, LT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
- Tahoe | 2001-2003 | Base, LS, LT, Z71 | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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Chevrolet Glow Plug Part Number: 97326305
$24.56 MSRP: $43.86
You Save: $19.30 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug, Spark Ignition; Diesel Glow Plug
Fits the following Chevrolet Models:
- Avalanche 1500 | 2004-2005 | Base, LS, LT, Z66, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Avalanche 2500 | 2004-2005 | Base, LS, LT | 8 Cyl 8.1 L GAS
- Silverado 1500 | 2004-2005 | Base, Hybrid, LS, LT, SS, WT, Z71 Off-Road | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Silverado 1500 HD | 2005 | Base, LS, LT | 8 Cyl 6.0 L GAS
- Silverado 2500 | 2004 | Base, LS, LT, WT | 8 Cyl 6.0 L GAS
- Silverado 2500 HD | 2004-2005 | Base, LS, LT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Silverado 3500 | 2004-2005 | Base, LS, LT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Suburban 1500 | 2004-2005 | LS, LT, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Suburban 2500 | 2004-2005 | LS, LT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
- Tahoe | 2004-2005 | LS, LT, Z71 | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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Chevrolet Glow Plug Part Number: 12656288
$59.68 MSRP: $106.58
You Save: $46.90 (44%)
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Glow; Diesel Glow Plug; Glow Plug,Glow
Fits the following Chevrolet Models:
- Cruze | 2014-2015 | Diesel | 4 Cyl 2.0 L DIESEL
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Chevrolet Spark Plug Part Number: 19302741
$2.38 MSRP: $3.14
You Save: $0.76 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaced by: 19354425
Fits the following Chevrolet Models:
- Astro | 1990-1995 | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Spark Plug Part Number: 19300872
$7.43 MSRP: $13.26
You Save: $5.83 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaced by: 19542404
- Replaces: 12597464, 92220447
Fits the following Chevrolet Models:
- Equinox | 2008-2009 | Sport | 6 Cyl 3.6 L GAS
- Malibu | 2008-2009 | LT, LTZ | 6 Cyl 3.6 L GAS
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Chevrolet Spark Plug Part Number: 19299585
$8.10 MSRP: $14.46
You Save: $6.36 (44%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug, Spark Ignition
Fits the following Chevrolet Models:
- Express 1500 | 2003-2007 | Base, LS, LT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Express 2500 | 2003-2007 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Express 3500 | 2003-2007 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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Chevrolet Spark Plug

Choose OEM Spark Plug, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Chevrolet's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Chevrolet Spark Plug. You can shop at highly competitive prices and protect your budget. All our genuine Chevrolet parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

The Chevrolet Spark Plug combines the fuel mixture as quickly as possible providing every engine with sharp and instant power. Chevrolet dates back to 1911, but it continues to drive in the right direction with aggressive styling and road trip-worthy interiors. Chevy maintains a wide range, including lively compacts and trucks to haul, meaning no driver will feel trapped. Chevy invests in user-friendly technology such as Super Cruise, which makes the road far from strenuous. Small parts are also significant in the manufacture of engines that crave reliable ignition and Chevy is no exception. Long warranties and understandable trim level imply that shoppers would have to spend less time on the option sheets and more time on choosing where to drive to. The company relies on established steel frames, easy-to-use infotainment and realistic fuel economy benefits rather than empty promises. Whether the journey is over frozen back roads or blazing highways, the cabins remain silent and the suspensions brush off potholes. A Spark Plug inside the cylinder head causes an electric arc to cross a tiny gap and to cause air and gasoline to burn precisely when the piston needs them. Its metal shell contains pressure, the ceramic insulator is a barrier to runaway heat and the nickel core is able to withstand thousands of micro-explosions provided the gap and heat rating are equal to engine load. These plugs are combined with long-lasting coil packs by Chevrolet to maintain high voltage following years of stop-go commuting. A new Spark Plug gets throttle snap back, protects emission equipment, and gets the remaining mile out of every gallon.

Chevrolet Spark Plug Parts and Q&A

Glow Plug
5613826
Q: How to replace spark plugs on Chevrolet Caprice?
A:
The spark plugs are located on both sides of the engine and their accessibility for removal may vary, especially if the car is equipped with air conditioning or power steering, potentially requiring special extension or swivel tools. It is advisable to look under the hood and ascertain whether those things are needed. The tools that are generally needed to replace the spark plug include a plug wrench or spark plug socket insulated for porcelain insulator as well as a feeler gauge for checking and adjusting spark plug gap. For vehicles with HEl ignition (from 1975 to 1981), there is a particular spark plug wire removing tool that you can use to detach the boot from the connector itself. It's recommended to go ahead and purchase new spark plugs, adjust their gap as specified, and replace each one separately. Before removing old spark plugs, let them cool down; check new ones for defects while using feeler gauges for testing gaps; cover fenders with cloths or cardboard paper so that they would not be marked by paint; after cooling off engine, take off one of wires twisting it until it can be removed; use compressed air or pump up bicycle tire so that no dirt remains near places where sparks ignite fuel. Then remove the spark plug in a counterclockwise direction by turning it with spanner or socket in anti-clockwise rotation according to the chart provided below. Insert a new plug, screw it in by hand then tighten using a torque wrench per Service Specifications. Look through spark plug wire before attaching it onto new plug: make sure it fits tightly twisting around; do not touch hot exhaust manifold while doing this operation at any cost. Repeat these steps for rest of plugs replacing them one by one to avoid confusion of leads.