Denso 673-4234 Direct Ignition Coil

Denso Direct Ignition Coil for Nissan and Infiniti

The Denso 673-4234 direct ignition coil is a coil-on-plug replacement built for 12.0-volt ignition systems. It is engineered for 2011-2013 Infiniti QX56, 2014-2023 Infiniti QX80, and 2017-2023 Nissan Armada applications, with a black housing and Denso’s certified replacement part designation.

Key Features

• Direct ignition coil, coil-on-plug design
• 12.0-volt electrical specification
• Black finish
• OE-style replacement for select Infiniti and Nissan V8 applications
• Denso part number 673-4234

Product Details

Denso’s Direct Ignition Coil - Coil on Plug line focuses on precise ignition performance for modern engine management systems. As a brand known for stick coil technology, Denso uses controlled testing and inspection processes to help maintain consistent coil output and dependable spark delivery. This part number, 673-4234, is listed for Infiniti QX56, Infiniti QX80, and Nissan Armada models across the confirmed year ranges.

This part cross-references Continental 49029 and Delphi GN10863 for the same application.

Common Symptoms This Part May Address

• Engine misfire under load or at idle
• Rough running after startup
• Check engine light related to ignition performance
• Hard starting caused by weak spark output
• Loss of power from a failing coil-on-plug unit

Installation Notes and Tips

Verify the vehicle year, model, and engine application before ordering. Confirm the connector style and coil location against the original part, and inspect spark plugs and related ignition components during service. Use the confirmed fitment list for direct replacement on 2011-2013 Infiniti QX56, 2014-2023 Infiniti QX80, and 2017-2023 Nissan Armada.

Quality Assurance

Denso positions this ignition coil as a certified replacement part and backs it with the company’s established inspection and testing standards for ignition components.