Denso 673-4020 Direct Ignition Coil
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Denso
 Coil on Plug

Denso 673-4020 Direct Ignition Coil

Brand Denso 673-4020
Color Black
Voltage 12
Product line Coil on Plug
Fits Nissan · 5 vehicles

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

Stick coil technology. Compact design from a leader in coil innovation.

DENSO name. Backed by rigorous testing and inspection processes.

Cross-references Airtex 5C1394, Beck/Arnley 178-8306 and BWD E381 for the same application. See all 12.

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Denso 673-4020 Direct Ignition Coil

The Denso 673-4020 direct ignition coil is a 12-volt coil on plug ignition component built for precise spark delivery in select Nissan applications. It is a black ignition coil designed for drivers replacing a failing coil on plug unit on Nissan Sentra models.

Key Features

  • 12-volt direct ignition coil for coil-on-plug systems
  • Black housing
  • OE-style replacement for select Nissan Sentra applications
  • Built by Denso, a brand known for stick coil technology and detailed inspection processes
  • Part number 673-4020 for easy identification

Product Details

Denso 673-4020 is part of the Coil on Plug line and is engineered for ignition systems that mount the coil directly on the spark plug. For 2002-2004 Nissan Sentra and 2005-2006 Nissan Sentra Federal Emissions models, this coil supports consistent ignition performance where a worn or failing coil can cause drivability problems. This part cross-references NGK U5036 for the same application.

Use 673-4020 when servicing a Nissan Sentra ignition system that requires a direct ignition coil with a 12V electrical specification. The Denso name is associated with careful testing and inspection practices for ignition components, which helps support dependable replacement selection for the correct vehicle application.

Common Issues This Part May Address

  • Engine misfire under load
  • Rough idle or uneven acceleration
  • Hard starting caused by weak spark output
  • Check engine light related to ignition coil faults
  • Loss of power from a failing coil on plug unit

Installation Notes

Fits 2002-2004 Nissan Sentra, N/A. Fits 2005-2006 Nissan Sentra, N/A, Federal Emissions; Coil on Plug. Confirm the original coil connector style, mounting location, and engine application before installation. Replace only with the correct coil-on-plug part number for the vehicle’s ignition system.

Quality Assurance

Denso manufactures this ignition coil with testing and inspection processes focused on consistent quality control. The 673-4020 is a direct ignition coil intended for the listed Nissan Sentra applications and is identified by Denso part number 673-4020.

Related reading

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2006NissanSentraN/AFederal Emissions; Coil on Plug
2005NissanSentraN/AFederal Emissions; Coil on Plug
2004NissanSentraN/ACoil on Plug
2003NissanSentraN/ACoil on Plug
2002NissanSentraN/ACoil on Plug
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Airtex — 5C1394Beck/Arnley — 178-8306BWD — E381Datsun/Nissan — 22448-6N011Datsun/Nissan — 22448-6N015Delphi — GN10245Echlin — IC481NGK — U5036Spectra Premium — C-647Standard Ignition — UF351Walker Products — 921-2049Wells — C1397