SKP SKIC121 Ignition Coil
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SKP SKIC121 Ignition Coil

Brand SKP SKIC121
Coil Shape Round
Fits Buick, Cadillac, Chevrolet, GMC, Hummer, and Isuzu · 284 vehicles

Round coil shape. Fits compact spaces with a simple, classic design.

Ignition coil. Delivers the spark energy needed for reliable engine operation.

Cross-references WAI CUF262, 6737101 and 10457730 for the same application. See all 7.

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Round Ignition Coil for GM Applications

SKP SKIC121 is a round ignition coil for a wide range of Chevrolet, GMC, Cadillac, Hummer, Buick, and Isuzu applications. It is built for direct replacement use on vehicles that call for the round-coil design, including many Silverado, Sierra, Tahoe, Yukon, and Escalade models.

Key Features

  • Round coil shape for the specified OE-style application
  • Fits a broad range of GM trucks, SUVs, and vans from 1999-2007
  • Direct replacement ignition coil for selected Chevrolet Silverado and GMC Sierra platforms
  • Cross-references WAI CUF262 for the same application
  • Part number SKIC121 for easy lookup and ordering

Detailed Description

SKP SKIC121 is an ignition coil designed around the round-coil configuration used on many GM vehicles. It serves as a replacement ignition coil for applications such as the Chevrolet Silverado 1500, Silverado 2500 HD, Tahoe, Suburban, GMC Sierra 1500, Yukon, and Cadillac Escalade, along with additional Express, Savana, H2, Rainier, and Ascender fitments. This part number, SKIC121, is also referenced by WAI CUF262 for the same application.

Compatible With 1999-2006 Chevrolet Silverado 1500, 1999-2006 Chevrolet Silverado 2500, 2001-2006 Chevrolet Silverado 3500, 2000-2006 Chevrolet Tahoe, 2000-2006 GMC Yukon, and related round-coil GM platforms listed in the fitment data.

Common Problems This Part Can Address

  • Engine misfire caused by a failing ignition coil
  • Rough idle or hesitation during acceleration
  • Hard starting related to weak spark output
  • Loss of power under load on coil-on-plug style applications
  • Check engine light concerns tied to ignition performance

Installation Notes and Tips

Verify the round coil shape and confirm the exact year, make, and model before installation. Match the vehicle application carefully, especially on 2007 Silverado and Sierra Classic/HD listings and on 2003-2007 Express and Savana vans. Inspect related ignition components and connectors during replacement to help ensure proper spark delivery.

Quality Assurance

SKP SKIC121 is cataloged as an ignition coil replacement for the listed GM applications and is identified with OE and aftermarket interchange references for fitment verification. Use the vehicle-specific fitment data to confirm the correct application before purchase or installation.

Related reading

This part fits 284 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2007ChevroletExpress 15005.3LV8—Round Coil
2007ChevroletExpress 2500——GAS—
2007ChevroletExpress 3500——GAS—
2007ChevroletSilverado 1500 Classic5.3LV8—Round Coil; w/ Mexico Emissions
2007ChevroletSilverado 1500 Classic6.0LV8—Round Coil; w/ Mexico Emissions
2007ChevroletSilverado 1500 Classic4.8LV8—Round Coil; w/ Mexico Emissions
2007ChevroletSilverado 2500 HD6.0LV8GASRound Coil
2007ChevroletSilverado 3500 Classic6.0LV8—Round Coil
2007ChevroletSilverado 3500 HD6.0LV8—Round Coil
2007GMCSavana 15005.3LV8—Round Coil
2007GMCSavana 25006.0LV8—Round Coil
2007GMCSavana 25004.8LV8—Round Coil
2007GMCSavana 35006.0LV8—Round Coil
2007GMCSavana 35004.8LV8—Round Coil
2007GMCSierra 1500 HD Classic6.0LV8—Round Coil
2007GMCSierra 2500 HD6.0LV8—Round Coil
2007GMCSierra 2500 HD6.6LV8—Round Coil
2007GMCSierra 3500 Classic———Round Coil
2007GMCSierra 3500 HD6.0LV8—Round Coil
2007HummerH2———Round Coil
2007WorkhorseW626.0LV8—w/ Round Ignition Coil; Delphi Type
2006CadillacEscalade———Round Coil
2006CadillacEscalade ESV———Round Coil
2006CadillacEscalade EXT———Round Coil
2006ChevroletAvalanche 1500———Round Coil
2006ChevroletAvalanche 2500———Round Coil
2006ChevroletExpress 15005.3LV8—Round Coil
2006ChevroletExpress 2500——GAS—
2006ChevroletExpress 3500——GAS—
2006ChevroletMonte Carlo5.3LV8—Round Coil
2006ChevroletSilverado 15005.3LV8—Round Coil
2006ChevroletSilverado 15004.8LV8—Round Coil
2006ChevroletSilverado 15006.0LV8—Round Coil
2006ChevroletSilverado 1500 HD———Round Coil
2006ChevroletSilverado 2500———Round Coil
2006ChevroletSilverado 2500 HD6.0LV8—Round Coil
2006ChevroletSilverado 35006.0LV8—Round Coil
2006ChevroletSonora———Delphi Type
2006ChevroletSuburban 1500———Round Coil
2006ChevroletSuburban 2500———Round Coil
2006ChevroletTahoe———Round Coil
2006GMCSavana 15005.3LV8—Round Coil
2006GMCSavana 25006.0LV8—Round Coil
2006GMCSavana 25004.8LV8—Round Coil
2006GMCSavana 35006.0LV8—Round Coil
2006GMCSavana 35004.8LV8—Round Coil
2006GMCSierra 15005.3LV8—Round Coil
2006GMCSierra 15006.0LV8—Round Coil
2006GMCSierra 15004.8LV8—Round Coil
2006GMCSierra 1500 HD6.0LV8—Round Coil
2006GMCSierra 2500 HD6.0LV8—Round Coil
2006GMCSierra 35006.0LV8—Round Coil
2006GMCYukon5.3LV8—Round Coil
2006GMCYukon6.0LV8—Round Coil
2006GMCYukon4.8LV8—Round Coil
2006GMCYukon XL 15005.3LV8—Round Coil
2006GMCYukon XL 15006.0LV8—Round Coil
2006GMCYukon XL 25006.0LV8—Round Coil
2006HummerH2———Round Coil
2005BuickRainier5.3LV8——
2005CadillacEscalade———Round Coil
2005CadillacEscalade ESV———Round Coil
2005CadillacEscalade EXT———Round Coil
2005ChevroletAvalanche 1500———Round Coil
2005ChevroletAvalanche 2500———Round Coil
2005ChevroletExpress 15005.3LV8—Round Coil
2005ChevroletExpress 25005.3LV8—Round Coil
2005ChevroletExpress 25006.0LV8—Round Coil
2005ChevroletExpress 25004.8LV8—Round Coil
2005ChevroletExpress 35006.0LV8—Round Coil
2005ChevroletExpress 35004.8LV8—Round Coil
2005ChevroletSilverado 15005.3LV8—Round Coil
2005ChevroletSilverado 15004.8LV8—Round Coil
2005ChevroletSilverado 15006.0LV8—Round Coil
2005ChevroletSilverado 1500 HD———Round Coil
2005ChevroletSilverado 2500———Round Coil
2005ChevroletSilverado 2500 HD6.0LV8—Round Coil
2005ChevroletSilverado 35006.0LV8—Round Coil
2005ChevroletSonora———Delphi Type
2005ChevroletSuburban 1500———Round Coil
2005ChevroletSuburban 2500———Round Coil
2005ChevroletTahoe———Round Coil
2005GMCSavana 15005.3LV8—Round Coil
2005GMCSavana 25005.3LV8—Round Coil
2005GMCSavana 25006.0LV8—Round Coil
2005GMCSavana 25004.8LV8—Round Coil
2005GMCSavana 35006.0LV8—Round Coil
2005GMCSavana 35004.8LV8—Round Coil
2005GMCSierra 15005.3LV8—Round Coil
2005GMCSierra 15006.0LV8—Round Coil
2005GMCSierra 15004.8LV8—Round Coil
2005GMCSierra 1500 HD6.0LV8—Round Coil
2005GMCSierra 2500 HD6.0LV8—Round Coil
2005GMCSierra 2500 HD6.6LV8—Round Coil
2005GMCSierra 2500 HD8.1LV8—Round Coil
2005GMCSierra 35006.0LV8—Round Coil
2005GMCSierra 35006.6LV8—Round Coil
2005GMCSierra 35008.1LV8—Round Coil
2005GMCYukon5.3LV8—Round Coil
2005GMCYukon6.0LV8—Round Coil
2005GMCYukon4.8LV8—Round Coil
2005GMCYukon XL 15005.3LV8—Round Coil
2005GMCYukon XL 15006.0LV8—Round Coil
2005GMCYukon XL 25006.0LV8—Round Coil
2005HummerH2———Round Coil
2005WorkhorseFasTrack FT10614.8LV8—w/ Round Ignition Coil; Delphi Type
2005WorkhorseFasTrack FT12614.8LV8—w/ Round Ignition Coil; Delphi Type
2005WorkhorseFasTrack FT14616.0LV8—Round Coil
2005WorkhorseFasTrack FT14614.8LV8—Round Coil
2005WorkhorseFasTrack FT16014.8LV8—w/ Round Ignition Coil; Delphi Type
2005WorkhorseFasTrack FT18016.0LV8—w/ Round Ignition Coil; Delphi Type
2004BuickRainier5.3LV8——
2004CadillacEscalade———Round Coil
2004CadillacEscalade ESV———Round Coil
2004CadillacEscalade EXT———Round Coil
2004ChevroletAvalanche 1500———Round Coil
2004ChevroletAvalanche 2500———Round Coil
2004ChevroletExpress 15005.3LV8—Round Coil
2004ChevroletExpress 25005.3LV8—Round Coil
2004ChevroletExpress 25006.0LV8—Round Coil
2004ChevroletExpress 25004.8LV8—Round Coil
2004ChevroletExpress 35006.0LV8—Round Coil
2004ChevroletSilverado 15005.3LV8—Round Coil
2004ChevroletSilverado 15004.8LV8—Round Coil
2004ChevroletSilverado 15006.0LV8—Round Coil
2004ChevroletSilverado 2500———Round Coil
2004ChevroletSilverado 2500 HD6.0LV8—Round Coil
2004ChevroletSilverado 35006.0LV8—Round Coil
2004ChevroletSonora———Delphi Type
2004ChevroletSSR———Round Coil
2004ChevroletSuburban 1500———Round Coil
2004ChevroletSuburban 2500———Round Coil
2004ChevroletTahoe———Round Coil
2004ChevroletTrailblazer EXT5.3LV8—Round Coil
2004GMCEnvoy XL5.3LV8—Round Coil
2004GMCEnvoy XUV5.3LV8—Round Coil
2004GMCSavana 15005.3LV8—Round Coil
2004GMCSavana 25005.3LV8—Round Coil
2004GMCSavana 25006.0LV8—Round Coil
2004GMCSavana 25004.8LV8—Round Coil
2004GMCSavana 35006.0LV8—Round Coil
2004GMCSavana 35004.8LV8—Round Coil
2004GMCSierra 15005.3LV8—Round Coil
2004GMCSierra 15006.0LV8—Round Coil
2004GMCSierra 15004.8LV8—Round Coil
2004GMCSierra 25006.0LV8—Round Coil
2004GMCSierra 2500 HD6.0LV8—Round Coil
2004GMCSierra 2500 HD6.6LV8—Round Coil
2004GMCSierra 2500 HD8.1LV8—Round Coil
2004GMCSierra 35006.0LV8—Round Coil
2004GMCSierra 35006.6LV8—Round Coil
2004GMCSierra 35008.1LV8—Round Coil
2004GMCYukon5.3LV8—Round Coil
2004GMCYukon6.0LV8—Round Coil
2004GMCYukon4.8LV8—Round Coil
2004GMCYukon XL 15005.3LV8—Round Coil
2004GMCYukon XL 15006.0LV8—Round Coil
2004GMCYukon XL 25006.0LV8—Round Coil
2004HummerH2———Round Coil
2004IsuzuAscender5.3LV8—Round Coil
2004WorkhorseFasTrack FT10614.8LV8—w/ Round Ignition Coil; Delphi Type
2004WorkhorseFasTrack FT14616.0LV8—Round Coil
2004WorkhorseFasTrack FT14614.8LV8—Round Coil
2004WorkhorseFasTrack FT16014.8LV8—w/ Round Ignition Coil; Delphi Type
2004WorkhorseFasTrack FT18016.0LV8—w/ Round Ignition Coil; Delphi Type
2003CadillacEscalade———Round Coil
2003CadillacEscalade ESV———Round Coil
2003CadillacEscalade EXT———Round Coil
2003ChevroletAvalanche 1500———Round Coil
2003ChevroletAvalanche 2500———Round Coil
2003ChevroletExpress 15005.3LV8—Round Coil
2003ChevroletExpress 25005.3LV8—Round Coil
2003ChevroletExpress 25006.0LV8—Round Coil
2003ChevroletExpress 25004.8LV8—Round Coil
2003ChevroletExpress 35006.0LV8—Round Coil
2003ChevroletSilverado 15005.3LV8—Round Coil
2003ChevroletSilverado 15004.8LV8—Round Coil
2003ChevroletSilverado 15006.0LV8—Round Coil
2003ChevroletSilverado 1500 HD———Round Coil
2003ChevroletSilverado 2500———Round Coil
2003ChevroletSilverado 2500 HD6.0LV8—Round Coil
2003ChevroletSilverado 35006.0LV8—Round Coil
2003ChevroletSonora———Delphi Type
2003ChevroletSSR———Round Coil
2003ChevroletSuburban 1500———Round Coil
2003ChevroletSuburban 2500———Round Coil
2003ChevroletTahoe———Round Coil
2003ChevroletTrailblazer EXT5.3LV8—Round Coil
2003GMCEnvoy XL5.3LV8—Round Coil
2003GMCSavana 15005.3LV8—Round Coil
2003GMCSavana 25005.3LV8—Round Coil
2003GMCSavana 25006.0LV8—Round Coil
2003GMCSavana 25004.8LV8—Round Coil
2003GMCSavana 35006.0LV8—Round Coil
2003GMCSierra 15005.3LV8—Round Coil
2003GMCSierra 15006.0LV8—Round Coil
2003GMCSierra 15004.8LV8—Round Coil
2003GMCSierra 1500 HD6.0LV8—Round Coil
2003GMCSierra 25006.0LV8—Round Coil
2003GMCSierra 2500 HD6.0LV8—Round Coil
2003GMCSierra 2500 HD6.6LV8—Round Coil
2003GMCSierra 2500 HD8.1LV8—Round Coil
2003GMCSierra 35006.0LV8—Round Coil
2003GMCSierra 35006.6LV8—Round Coil
2003GMCSierra 35008.1LV8—Round Coil
2003GMCW3500 Forward————
2003GMCYukon5.3LV8—Round Coil
2003GMCYukon6.0LV8—Round Coil
2003GMCYukon4.8LV8—Round Coil
2003GMCYukon XL 15005.3LV8—Round Coil
2003GMCYukon XL 15006.0LV8—Round Coil
2003GMCYukon XL 25006.0LV8—Round Coil
2003HummerH2———Round Coil
2003IsuzuAscender5.3LV8—Round Coil
2003IsuzuNPR————
2002CadillacEscalade———Round Coil
2002CadillacEscalade EXT———Round Coil
2002ChevroletAvalanche 1500———Round Coil
2002ChevroletSilverado 15005.3LV8—Round Coil
2002ChevroletSilverado 15004.8LV8—Round Coil
2002ChevroletSilverado 1500 HD———Round Coil
2002ChevroletSilverado 25006.0LV8—Round Coil
2002ChevroletSilverado 2500 HD6.0LV8—Round Coil
2002ChevroletSilverado 35006.0LV8—Round Coil
2002ChevroletSuburban 15005.3LV8—Round Coil
2002ChevroletSuburban 25006.0LV8—Round Coil
2002ChevroletTahoe———Round Coil
2002GMCSierra 15005.3LV8—Round Coil
2002GMCSierra 15006.0LV8—Round Coil
2002GMCSierra 15004.8LV8—Round Coil
2002GMCSierra 1500 HD6.0LV8—Round Coil
2002GMCSierra 25006.0LV8—Round Coil
2002GMCSierra 2500 HD6.0LV8—Round Coil
2002GMCSierra 35006.0LV8—Round Coil
2002GMCYukon5.3LV8—Round Coil
2002GMCYukon6.0LV8—Round Coil
2002GMCYukon4.8LV8—Round Coil
2002GMCYukon XL 15005.3LV8—Round Coil
2002GMCYukon XL 15006.0LV8—Round Coil
2002GMCYukon XL 25006.0LV8—Round Coil
2001ChevroletSilverado 15005.3LV8—Round Coil
2001ChevroletSilverado 15004.8LV8—Round Coil
2001ChevroletSilverado 1500 HD———Round Coil
2001ChevroletSilverado 25006.0LV8—Round Coil
2001ChevroletSilverado 2500 HD6.0LV8GASRound Coil
2001ChevroletSilverado 35006.0LV8—Round Coil
2001ChevroletSuburban 15005.3LV8—Round Coil
2001ChevroletSuburban 25006.0LV8—Round Coil
2001ChevroletTahoe———Round Coil
2001GMCSierra 15005.3LV8—Round Coil
2001GMCSierra 15006.0LV8—Round Coil
2001GMCSierra 15004.8LV8—Round Coil
2001GMCSierra 1500 HD6.0LV8—Round Coil
2001GMCSierra 25006.0LV8—Round Coil
2001GMCSierra 2500 HD6.0LV8—Round Coil
2001GMCSierra 35006.0LV8—Round Coil
2001GMCYukon5.3LV8—Round Coil
2001GMCYukon6.0LV8—Round Coil
2001GMCYukon4.8LV8—Round Coil
2001GMCYukon XL 15005.3LV8—Round Coil
2001GMCYukon XL 15006.0LV8—Round Coil
2001GMCYukon XL 25006.0LV8—Round Coil
2000ChevroletSilverado 15005.3LV8—Round Coil
2000ChevroletSilverado 15004.8LV8—Round Coil
2000ChevroletSilverado 2500———Round Coil
2000ChevroletSuburban 15005.3LV8—Round Coil
2000ChevroletSuburban 2500———Round Coil
2000ChevroletTahoe5.3LV8—Round Coil
2000ChevroletTahoe4.8LV8—Round Coil
2000GMCSierra 15005.3LV8—Round Coil
2000GMCSierra 15004.8LV8—Round Coil
2000GMCSierra 25006.0LV8—Round Coil
2000GMCSierra 25005.3LV8—Round Coil
2000GMCYukon5.3LV8—Round Coil
2000GMCYukon4.8LV8—Round Coil
2000GMCYukon XL 15005.3LV8—Round Coil
2000GMCYukon XL 25006.0LV8—Round Coil
1999ChevroletSilverado 15005.3LV8—Round Coil
1999ChevroletSilverado 15004.8LV8—Round Coil
1999ChevroletSilverado 2500———Round Coil
1999GMCSierra 15005.3LV8—Round Coil
1999GMCSierra 15004.8LV8—Round Coil
1999GMCSierra 25006.0LV8—Round Coil
1999GMCSierra 25005.3LV8—Round Coil
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
WAI — CUF2626737101104577301256329319005218UF262UF262T