Denso 673-4004 Direct Ignition Coil - Left
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Denso
 Coil on Plug

Denso 673-4004 Direct Ignition Coil - Left

Brand Denso 673-4004
Position Left
Color Black
Voltage 12
Product line Coil on Plug
Fits INFINITI and Nissan · 2 vehicles

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

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

12-volt design. Built for standard automotive electrical systems.

Cross-references Airtex 5C1163, Beck/Arnley 178-8297 and BWD E393 for the same application. See all 12.

$55.02Free shipping
In stock · usually ships same day before 1pm CST
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Order total $55.02
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Denso 673-4004 Ignition Coil Overview

The Denso 673-4004 direct ignition coil is a 12-volt coil on plug ignition component built for precise spark delivery. It is a direct replacement for select 2000 Infiniti I30 and 2000 Nissan Maxima applications, including the left-side coil on plug position.

Denso’s Coil on Plug line focuses on stick coil technology with controlled testing and inspection to support consistent ignition performance. For buyers searching for a 2000 Infiniti I30 ignition coil or a 2000 Nissan Maxima coil on plug replacement, part number 673-4004 provides a direct-fit option from an OE-focused brand.

Key Features

  • Direct ignition coil for coil-on-plug applications
  • 12-volt electrical specification
  • Black housing finish
  • Fits the left position on listed vehicles
  • Denso Coil on Plug product line
  • Part number 673-4004 for easy identification

Detailed Product Description

The Denso 673-4004 ignition coil is engineered for vehicles that use a coil-on-plug setup, where the coil mounts directly at the spark plug location. This design supports efficient spark transfer and stable ignition performance in the 2000 Infiniti I30 and 2000 Nissan Maxima. If you are replacing a failing left-side coil on plug unit, 673-4004 is the correct OE-style service part to match the listed fitment.

This part cross-references NGK U5110 and Standard Ignition UF363 for the same application.

What This Part Helps Address

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

Installation Notes and Tips

Verify the vehicle year, make, model, and left-side coil on plug position before installation. Inspect the spark plug, connector, and wiring harness during replacement, since worn plugs or damaged connectors can affect coil performance. Confirm the part number 673-4004 matches the original coil configuration before service.

Quality Assurance

Denso applies controlled testing and inspection processes to this ignition coil as part of its Coil on Plug line. The brand’s focus on stick coil technology supports consistent manufacturing quality for direct ignition replacement.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2000INFINITII30LeftCoil on Plug
2000NissanMaximaLeftCoil 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 — 5C1163Beck/Arnley — 178-8297BWD — E393Datsun/Nissan — 22448-2Y005Delphi — GN10431Echlin — IC493Infiniti — 22448-2Y005NGK — U5110Spectra Premium — C-532Standard Ignition — UF363Walker Products — 921-2045Wells — C1267