Denso 671-6290 Spark Plug Wire Set

Denso 671-6290 Ignition Wire Set

Denso 671-6290 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct replacement for select Jeep, Dodge, Ram, and Mitsubishi applications, including Jeep Liberty, Dodge Nitro, and Ram 1500 models.

Key Features

• 7mm insulation outside diameter for OE-style routing and fit
• Silicone spark plug boot material for heat resistance and durability
• Female distributor coil end terminal type
• 180-degree spark plug end boot design
• Female spark plug end terminal type
• Built to meet or exceed OE/OES standards in construction

Product Details

This Denso First Time Fit ignition wire set is engineered as an OE-style replacement for vehicles that require a 7mm ignition lead design. The silicone boot material helps maintain a secure connection at the spark plug end, while the female terminal configuration and 180-degree boot angle support proper routing in the engine bay. The Denso 671-6290 is a practical choice for restoring ignition wire performance on applications such as 2009-2012 Jeep Liberty, 2009-2011 Dodge Nitro, and 2011-2012 Ram 1500.

The First Time Fit product line is Denso’s OE-replacement line for ignition components, focused on matching original equipment dimensions and connection style so the part installs and functions like the factory wire set. This makes the 671-6290 a strong fit for drivers looking for a direct replacement on Jeep Liberty, Dodge Dakota, Dodge Ram 1500, Jeep Commander, Jeep Grand Cherokee, Ram Dakota, Dodge Durango, and Mitsubishi Raider applications listed below.

What It Helps Fix

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition transfer
• Voltage leakage from cracked or deteriorated wire insulation
• Heat-related boot breakdown at the spark plug connection

Installation Notes

Verify engine application and wire routing before installation. Match the female terminal ends and 180-degree spark plug boot orientation to the original layout for proper fitment. For best results, inspect spark plugs, coil connections, and nearby ignition components at the same time to confirm the source of the concern. Fits 2009-2012 Jeep Liberty, 2009-2011 Dodge Nitro, 2011-2012 Ram 1500, 2011 Ram Dakota, 2009-2010 Dodge Dakota, 2009-2010 Dodge Ram 1500, 2009-2010 Jeep Commander, 2009-2010 Jeep Grand Cherokee, 2009 Dodge Durango, and 2009 Mitsubishi Raider.

Quality Assurance

Denso manufactures this ignition wire set to OE/OES standards for form and performance consistency. Part number 671-6290 is built as a direct-fit replacement for the listed applications.