Denso 673-6100 Direct Ignition Coil

Denso 673-6100 Direct Ignition Coil

Denso 673-6100 is a direct ignition coil for coil-on-plug applications that demand stable 12-volt operation and reliable spark delivery. This gray ignition coil uses a female 6-tower configuration and is built for Ford Ranger, Ford Explorer, and related Mazda and Mercury applications listed below.

Key Features

• Direct ignition coil for coil-on-plug systems
• 12-volt electrical specification
• Gray housing
• Female 6-tower design
• OE-style fitment for select Ford, Mazda, and Mercury vehicles
• Part number: 673-6100

Product Details

As part of Denso’s Coil on Plug line, this ignition coil reflects the brand’s focus on stick coil technology and inspection standards used to support consistent ignition performance. The Denso 673-6100 is a direct ignition coil for vehicles equipped with coil-on-plug ignition, including Fits 1990-2011 Ford Ranger, N/A; Fits 1991-2010 Ford Explorer, N/A; Fits 2008-2010 Ford Explorer Sport Trac, N/A; Fits 2001-2005 Ford Explorer Sport Trac, N/A; Fits 2005-2010 Ford Mustang, N/A; Fits 1998-2010 Mercury Mountaineer, N/A; Fits 1994-2009 Mazda B4000, N/A; Fits 2001-2003 Ford Explorer Sport, N/A; Fits 1998-2002 Mazda 626, N/A; Fits 1998-2000 Mazda B3000, N/A; Fits 1990-1997 Ford Aerostar, N/A; Fits 1995-1996 Mazda B3000, N/A; and Fits 1991-1994 Mazda Navajo, N/A. This part cross-references Motorcraft DGE 446 and NGK U2029 for the same application.

What It Helps Address

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

Installation Notes and Tips

Verify the vehicle’s coil-on-plug configuration, connector style, and engine application before installation. Confirm the female tower layout and 12-volt specification match the original part, and inspect the coil connector, boots, and surrounding ignition components for wear before replacing the coil. For Ford Ranger, Ford Explorer, and Mazda B3000 applications, match the fitment notes exactly, including the horizontal coil connector plug note where listed.

Quality Assurance

Denso applies superior testing and inspection processes to its ignition coil line to support consistent quality and dependable operation. The 673-6100 is built as a direct ignition coil for the listed applications and follows Denso’s coil-on-plug product standards.