Denso 673-7100 Direct Ignition Coil
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Denso
 Coil on Plug

Denso 673-7100 Direct Ignition Coil

Brand Denso 673-7100
Color Black
Tower Gender Female
Tower Quantity 1
Voltage 12
Product line Coil on Plug
Fits Chevrolet, GMC, Oldsmobile, Cadillac, Isuzu, Pontiac, and Buick · 259 vehicles

Direct ignition coil. OE-style replacement for dependable spark delivery.

Coil-on-plug design. Compact stick coil format for efficient ignition performance.

DENSO quality. Built with rigorous testing and inspection processes.

Cross-references ACDelco D577, Airtex 5C1062 and Beck/Arnley 178-8262 for the same application. See all 13.

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Denso Coil on Plug Ignition Coil 673-7100

The Denso 673-7100 direct ignition coil is built for coil-on-plug applications that demand stable 12-volt operation and consistent spark delivery. This black, single-tower female coil is a direct ignition coil for a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, Oldsmobile, Isuzu, and Subaru applications listed below.

Key Features

  • Brand: Denso Coil on Plug
  • Part number: 673-7100
  • Direct ignition coil for coil-on-plug systems
  • 12-volt electrical specification
  • Black housing with one female tower
  • Built using Denso testing and inspection processes for ignition coil quality control

Product Details

Denso’s Coil on Plug line focuses on stick-coil ignition technology for modern and late-model engine management systems. The 673-7100 is engineered as a direct ignition coil replacement for vehicles that use a coil-on-plug layout, helping restore proper ignition performance when the original coil weakens or fails. This part cross-references ACDelco D577 and NGK U1094 for the same application. If you are servicing a Chevrolet Silverado 1500, GMC Sierra 1500, or Chevrolet Tahoe with a coil-on-plug setup, the Denso 673-7100 is a direct-fit option for the listed vehicles.

What This Ignition Coil Helps Fix

  • Engine misfire caused by a weak or failing ignition coil
  • Rough idle from inconsistent spark output
  • Hard starting related to ignition coil breakdown
  • Loss of power under load from poor coil performance
  • Check engine light conditions tied to ignition system faults

Installation Notes and Tips

Verify the connector style, tower configuration, and vehicle application before installation. This coil uses a female tower and is specified for 12-volt systems. Confirm the exact year, make, and model match for your Chevrolet Express 1500, GMC Savana 1500, Chevrolet Blazer, or other listed application before replacing the original part number 673-7100. For best results, inspect spark plugs and related ignition components during service.

Quality Assurance

Denso applies extensive testing and inspection to its ignition coils to maintain consistent product quality. The Coil on Plug product line is built around Denso’s experience in stick coil technology, giving technicians a dependable OE-style replacement option for the listed applications.

Compatible Vehicles

  • Fits 1996-2007 Chevrolet Express 1500, Coil on Plug
  • Fits 2007 Chevrolet Silverado 1500 Classic, Coil on Plug
  • Fits 1996-2007 GMC Savana 1500, Coil on Plug
  • Fits 2007 GMC Sierra 1500 Classic, Coil on Plug
  • Fits 1999-2006 Chevrolet Silverado 1500, Coil on Plug
  • Fits 1999-2006 GMC Sierra 1500, Coil on Plug
  • Fits 1996-2005 Chevrolet Astro, Coil on Plug
  • Fits 1996-2005 Chevrolet Blazer, Coil on Plug
  • Fits 1996-2005 Chevrolet Express 2500, Coil on Plug
  • Fits 1996-2005 GMC Safari, Coil on Plug
  • Fits 1996-2005 GMC Savana 2500, Coil on Plug
  • Fits 1996-2004 Chevrolet S10, Coil on Plug
  • Fits 1996-2004 GMC Sonoma, Coil on Plug
  • Fits 1996-2002 Chevrolet Express 3500, Coil on Plug
  • Fits 1996-2002 GMC Savana 3500, Coil on Plug
  • Fits 1996-2001 GMC Jimmy, Coil on Plug
  • Fits 1996-2001 Oldsmobile Bravada, Coil on Plug
  • Fits 1999-2000 Cadillac Escalade, Coil on Plug
  • Fits 1996-2000 Chevrolet C2500, Coil on Plug
  • Fits 1996-2000 Chevrolet C3500, Coil on Plug
  • Fits 1996-2000 Chevrolet K2500, Coil on Plug
  • Fits 1996-2000 Chevrolet K3500, Coil on Plug
  • Fits 1996-2000 Chevrolet Tahoe, Coil on Plug
  • Fits 1996-2000 GMC C2500, Coil on Plug
  • Fits 1996-2000 GMC C3500, Coil on Plug
  • Fits 1996-2000 GMC K2500, Coil on Plug
  • Fits 1996-2000 GMC K3500, Coil on Plug
  • Fits 1996-2000 GMC Yukon, Coil on Plug
  • Fits 1997-2000 Isuzu Hombre, Coil on Plug
  • Fits 1996-1999 Chevrolet C1500, Coil on Plug
  • Fits 1996-1999 Chevrolet C1500 Suburban, Coil on Plug
  • Fits 1996-1999 Chevrolet C2500 Suburban, Coil on Plug
  • Fits 1996-1999 Chevrolet K1500, Coil on Plug
  • Fits 1996-1999 Chevrolet K1500 Suburban, Coil on Plug
  • Fits 1996-1999 Chevrolet K2500 Suburban, Coil on Plug
  • Fits 1996-1999 Chevrolet P30, Coil on Plug
  • Fits 1996-1999 GMC C1500, Coil on Plug
  • Fits 1996-1999 GMC C1500 Suburban, Coil on Plug
  • Fits 1996-1999 GMC C2500 Suburban, Coil on Plug
  • Fits 1996-1999 GMC K1500, Coil on Plug
  • Fits 1996-1999 GMC K1500 Suburban, Coil on Plug
  • Fits 1996-1999 GMC K2500 Suburban, Coil on Plug
  • Fits 1996-1999 GMC P3500, Coil on Plug
  • Fits 1996-1997 Chevrolet Camaro, Coil on Plug
  • Fits 1996-1997 Pontiac Firebird, Coil on Plug
  • Fits 1996 Buick Roadmaster, Coil on Plug
  • Fits 1996 Cadillac Commercial Chassis, Coil on Plug
  • Fits 1996 Cadillac Fleetwood, Coil on Plug
  • Fits 1996 Chevrolet Caprice, Coil on Plug
  • Fits 1996 Chevrolet Corvette, Coil on Plug
  • Fits 1996 Chevrolet Impala, Coil on Plug

Related reading

This part fits 259 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelFuel TypePositionNotes
2007ChevroletExpress 1500—N/ACoil on Plug
2007ChevroletSilverado 1500 Classic—N/ACoil on Plug
2007GMCSavana 1500—N/ACoil on Plug
2007GMCSierra 1500 Classic—N/ACoil on Plug
2006ChevroletExpress 1500—N/ACoil on Plug
2006ChevroletSilverado 1500—N/ACoil on Plug
2006GMCSavana 1500—N/ACoil on Plug
2006GMCSierra 1500—N/ACoil on Plug
2005ChevroletAstro—N/ACoil on Plug
2005ChevroletBlazer—N/ACoil on Plug
2005ChevroletExpress 1500—N/ACoil on Plug
2005ChevroletExpress 2500—N/ACoil on Plug
2005ChevroletSilverado 1500—N/ACoil on Plug
2005GMCSafari—N/ACoil on Plug
2005GMCSavana 1500—N/ACoil on Plug
2005GMCSavana 2500—N/ACoil on Plug
2005GMCSierra 1500—N/ACoil on Plug
2004ChevroletAstro—N/ACoil on Plug
2004ChevroletBlazer—N/ACoil on Plug
2004ChevroletExpress 1500—N/ACoil on Plug
2004ChevroletExpress 2500—N/ACoil on Plug
2004ChevroletS10—N/ACoil on Plug
2004ChevroletSilverado 1500—N/ACoil on Plug
2004GMCSafari—N/ACoil on Plug
2004GMCSavana 1500—N/ACoil on Plug
2004GMCSavana 2500—N/ACoil on Plug
2004GMCSierra 1500—N/ACoil on Plug
2004GMCSonoma—N/ACoil on Plug
2003ChevroletAstro—N/ACoil on Plug
2003ChevroletBlazer—N/ACoil on Plug
2003ChevroletExpress 1500—N/ACoil on Plug
2003ChevroletExpress 2500—N/ACoil on Plug
2003ChevroletS10—N/ACoil on Plug
2003ChevroletSilverado 1500—N/ACoil on Plug
2003GMCSafari—N/ACoil on Plug
2003GMCSavana 1500—N/ACoil on Plug
2003GMCSavana 2500—N/ACoil on Plug
2003GMCSierra 1500—N/ACoil on Plug
2003GMCSonoma—N/ACoil on Plug
2002ChevroletAstro—N/ACoil on Plug
2002ChevroletBlazer—N/ACoil on Plug
2002ChevroletExpress 1500—N/ACoil on Plug
2002ChevroletExpress 2500—N/ACoil on Plug
2002ChevroletExpress 3500—N/ACoil on Plug
2002ChevroletS10—N/ACoil on Plug
2002ChevroletSilverado 1500—N/ACoil on Plug
2002GMCSafari—N/ACoil on Plug
2002GMCSavana 1500—N/ACoil on Plug
2002GMCSavana 2500—N/ACoil on Plug
2002GMCSavana 3500—N/ACoil on Plug
2002GMCSierra 1500—N/ACoil on Plug
2002GMCSonoma—N/ACoil on Plug
2001ChevroletAstro—N/ACoil on Plug
2001ChevroletBlazer—N/ACoil on Plug
2001ChevroletExpress 1500—N/ACoil on Plug
2001ChevroletExpress 2500—N/ACoil on Plug
2001ChevroletExpress 3500—N/ACoil on Plug
2001ChevroletS10—N/ACoil on Plug
2001ChevroletSilverado 1500—N/ACoil on Plug
2001GMCJimmy—N/ACoil on Plug
2001GMCSafari—N/ACoil on Plug
2001GMCSavana 1500—N/ACoil on Plug
2001GMCSavana 2500—N/ACoil on Plug
2001GMCSavana 3500—N/ACoil on Plug
2001GMCSierra 1500—N/ACoil on Plug
2001GMCSonoma—N/ACoil on Plug
2001OldsmobileBravada—N/ACoil on Plug
2000CadillacEscalade—N/ACoil on Plug
2000ChevroletAstro—N/ACoil on Plug
2000ChevroletBlazer—N/ACoil on Plug
2000ChevroletC2500—N/ACoil on Plug
2000ChevroletC3500—N/ACoil on Plug
2000ChevroletExpress 1500—N/ACoil on Plug
2000ChevroletExpress 2500—N/ACoil on Plug
2000ChevroletExpress 3500—N/ACoil on Plug
2000ChevroletK2500—N/ACoil on Plug
2000ChevroletK3500—N/ACoil on Plug
2000ChevroletS10—N/ACoil on Plug
2000ChevroletSilverado 1500—N/ACoil on Plug
2000ChevroletTahoe—N/ACoil on Plug
2000GMCC2500—N/ACoil on Plug
2000GMCC3500—N/ACoil on Plug
2000GMCJimmy—N/ACoil on Plug
2000GMCK2500—N/ACoil on Plug
2000GMCK3500—N/ACoil on Plug
2000GMCSafari—N/ACoil on Plug
2000GMCSavana 1500—N/ACoil on Plug
2000GMCSavana 2500—N/ACoil on Plug
2000GMCSavana 3500—N/ACoil on Plug
2000GMCSierra 1500—N/ACoil on Plug
2000GMCSonoma—N/ACoil on Plug
2000GMCYukon—N/ACoil on Plug
2000IsuzuHombre—N/ACoil on Plug
2000OldsmobileBravada—N/ACoil on Plug
1999CadillacEscalade—N/ACoil on Plug
1999ChevroletAstro—N/ACoil on Plug
1999ChevroletBlazer—N/ACoil on Plug
1999ChevroletC1500—N/ACoil on Plug
1999ChevroletC1500 Suburban—N/ACoil on Plug
1999ChevroletC2500—N/ACoil on Plug
1999ChevroletC2500 Suburban—N/ACoil on Plug
1999ChevroletC3500—N/ACoil on Plug
1999ChevroletExpress 1500—N/ACoil on Plug
1999ChevroletExpress 2500—N/ACoil on Plug
1999ChevroletExpress 3500—N/ACoil on Plug
1999ChevroletK1500—N/ACoil on Plug
1999ChevroletK1500 Suburban—N/ACoil on Plug
1999ChevroletK2500—N/ACoil on Plug
1999ChevroletK2500 Suburban—N/ACoil on Plug
1999ChevroletK3500—N/ACoil on Plug
1999ChevroletP30—N/ACoil on Plug
1999ChevroletS10—N/ACoil on Plug
1999ChevroletSilverado 1500—N/ACoil on Plug
1999ChevroletTahoe—N/ACoil on Plug
1999GMCC1500—N/ACoil on Plug
1999GMCC1500 Suburban—N/ACoil on Plug
1999GMCC2500—N/ACoil on Plug
1999GMCC2500 Suburban—N/ACoil on Plug
1999GMCC3500—N/ACoil on Plug
1999GMCJimmy—N/ACoil on Plug
1999GMCK1500—N/ACoil on Plug
1999GMCK1500 Suburban—N/ACoil on Plug
1999GMCK2500—N/ACoil on Plug
1999GMCK2500 Suburban—N/ACoil on Plug
1999GMCK3500—N/ACoil on Plug
1999GMCP3500—N/ACoil on Plug
1999GMCSafari—N/ACoil on Plug
1999GMCSavana 1500—N/ACoil on Plug
1999GMCSavana 2500—N/ACoil on Plug
1999GMCSavana 3500—N/ACoil on Plug
1999GMCSierra 1500—N/ACoil on Plug
1999GMCSonoma—N/ACoil on Plug
1999GMCYukon—N/ACoil on Plug
1999IsuzuHombre—N/ACoil on Plug
1999OldsmobileBravada—N/ACoil on Plug
1998ChevroletAstro—N/ACoil on Plug
1998ChevroletBlazer—N/ACoil on Plug
1998ChevroletC1500—N/ACoil on Plug
1998ChevroletC1500 Suburban—N/ACoil on Plug
1998ChevroletC2500—N/ACoil on Plug
1998ChevroletC2500 Suburban—N/ACoil on Plug
1998ChevroletC3500—N/ACoil on Plug
1998ChevroletExpress 1500—N/ACoil on Plug
1998ChevroletExpress 2500—N/ACoil on Plug
1998ChevroletExpress 3500—N/ACoil on Plug
1998ChevroletK1500—N/ACoil on Plug
1998ChevroletK1500 Suburban—N/ACoil on Plug
1998ChevroletK2500—N/ACoil on Plug
1998ChevroletK2500 Suburban—N/ACoil on Plug
1998ChevroletK3500—N/ACoil on Plug
1998ChevroletP30—N/ACoil on Plug
1998ChevroletS10—N/ACoil on Plug
1998ChevroletTahoe—N/ACoil on Plug
1998GMCC1500—N/ACoil on Plug
1998GMCC1500 Suburban—N/ACoil on Plug
1998GMCC2500—N/ACoil on Plug
1998GMCC2500 Suburban—N/ACoil on Plug
1998GMCC3500—N/ACoil on Plug
1998GMCJimmy—N/ACoil on Plug
1998GMCK1500—N/ACoil on Plug
1998GMCK1500 Suburban—N/ACoil on Plug
1998GMCK2500—N/ACoil on Plug
1998GMCK2500 Suburban—N/ACoil on Plug
1998GMCK3500—N/ACoil on Plug
1998GMCP3500—N/ACoil on Plug
1998GMCSafari—N/ACoil on Plug
1998GMCSavana 1500—N/ACoil on Plug
1998GMCSavana 2500—N/ACoil on Plug
1998GMCSavana 3500—N/ACoil on Plug
1998GMCSonoma—N/ACoil on Plug
1998GMCYukon—N/ACoil on Plug
1998IsuzuHombre—N/ACoil on Plug
1998OldsmobileBravada—N/ACoil on Plug
1997ChevroletAstro—N/ACoil on Plug
1997ChevroletBlazer—N/ACoil on Plug
1997ChevroletC1500—N/ACoil on Plug
1997ChevroletC1500 Suburban—N/ACoil on Plug
1997ChevroletC2500—N/ACoil on Plug
1997ChevroletC2500 Suburban—N/ACoil on Plug
1997ChevroletC3500—N/ACoil on Plug
1997ChevroletCamaro—N/ACoil on Plug
1997ChevroletExpress 1500—N/ACoil on Plug
1997ChevroletExpress 2500—N/ACoil on Plug
1997ChevroletExpress 3500—N/ACoil on Plug
1997ChevroletK1500—N/ACoil on Plug
1997ChevroletK1500 Suburban—N/ACoil on Plug
1997ChevroletK2500—N/ACoil on Plug
1997ChevroletK2500 Suburban—N/ACoil on Plug
1997ChevroletK3500—N/ACoil on Plug
1997ChevroletP30—N/ACoil on Plug
1997ChevroletS10—N/ACoil on Plug
1997ChevroletTahoe—N/ACoil on Plug
1997GMCC1500—N/ACoil on Plug
1997GMCC1500 Suburban—N/ACoil on Plug
1997GMCC2500—N/ACoil on Plug
1997GMCC2500 Suburban—N/ACoil on Plug
1997GMCC3500—N/ACoil on Plug
1997GMCJimmy—N/ACoil on Plug
1997GMCK1500—N/ACoil on Plug
1997GMCK1500 Suburban—N/ACoil on Plug
1997GMCK2500—N/ACoil on Plug
1997GMCK2500 Suburban—N/ACoil on Plug
1997GMCK3500—N/ACoil on Plug
1997GMCP3500—N/ACoil on Plug
1997GMCSafari—N/ACoil on Plug
1997GMCSavana 1500—N/ACoil on Plug
1997GMCSavana 2500—N/ACoil on Plug
1997GMCSavana 3500—N/ACoil on Plug
1997GMCSonoma—N/ACoil on Plug
1997GMCYukon—N/ACoil on Plug
1997IsuzuHombre—N/ACoil on Plug
1997OldsmobileBravada—N/ACoil on Plug
1997PontiacFirebird—N/ACoil on Plug
1996BuickRoadmaster—N/ACoil on Plug
1996CadillacCommercial Chassis—N/ACoil on Plug
1996CadillacFleetwood—N/ACoil on Plug
1996ChevroletAstro—N/ACoil on Plug
1996ChevroletBlazer—N/ACoil on Plug
1996ChevroletC1500—N/ACoil on Plug
1996ChevroletC1500 Suburban—N/ACoil on Plug
1996ChevroletC2500—N/ACoil on Plug
1996ChevroletC2500 Suburban—N/ACoil on Plug
1996ChevroletC3500—N/ACoil on Plug
1996ChevroletCamaro—N/ACoil on Plug
1996ChevroletCaprice—N/ACoil on Plug
1996ChevroletCorvette—N/ACoil on Plug
1996ChevroletExpress 1500—N/ACoil on Plug
1996ChevroletExpress 2500—N/ACoil on Plug
1996ChevroletExpress 3500—N/ACoil on Plug
1996ChevroletImpala—N/ACoil on Plug
1996ChevroletK1500—N/ACoil on Plug
1996ChevroletK1500 Suburban—N/ACoil on Plug
1996ChevroletK2500—N/ACoil on Plug
1996ChevroletK2500GASN/ACoil on Plug
1996ChevroletK2500 Suburban—N/ACoil on Plug
1996ChevroletK3500—N/ACoil on Plug
1996ChevroletP30—N/ACoil on Plug
1996ChevroletS10—N/ACoil on Plug
1996ChevroletTahoe—N/ACoil on Plug
1996GMCC1500—N/ACoil on Plug
1996GMCC1500 Suburban—N/ACoil on Plug
1996GMCC2500—N/ACoil on Plug
1996GMCC2500 Suburban—N/ACoil on Plug
1996GMCC3500—N/ACoil on Plug
1996GMCJimmy—N/ACoil on Plug
1996GMCK1500—N/ACoil on Plug
1996GMCK1500 Suburban—N/ACoil on Plug
1996GMCK2500—N/ACoil on Plug
1996GMCK2500 Suburban—N/ACoil on Plug
1996GMCK3500—N/ACoil on Plug
1996GMCP3500—N/ACoil on Plug
1996GMCSafari—N/ACoil on Plug
1996GMCSavana 1500—N/ACoil on Plug
1996GMCSavana 2500—N/ACoil on Plug
1996GMCSavana 3500—N/ACoil on Plug
1996GMCSonoma—N/ACoil on Plug
1996GMCYukon—N/ACoil on Plug
1996OldsmobileBravada—N/ACoil on Plug
1996PontiacFirebird—N/ACoil on Plug
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — D577Airtex — 5C1062Beck/Arnley — 178-8262BWD — E208Delphi — CE20003Echlin — IC58GM Goodwrench — 10489421NGK — U1094Spectra Premium — C-594Standard Ignition — DR49Subaru — 8-10489-421-0Walker Products — 920-1006Wells — C1098