Denso 671-6260 Spark Plug Wire Set

Denso 8mm Spark Plug Wire Set

Denso 671-6260 is an 8mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct replacement for 2004-2006 Ford Taurus and 2004-2005 Mercury Sable applications, with OE-style construction for consistent ignition transfer.

• 8mm insulation outside diameter for OE-style wire routing and fit
• Silicone spark plug boot material for heat resistance and flexibility
• 115-degree spark plug end boot angle for proper terminal alignment
• Female spark plug end terminal type
• Female distributor/coil end terminal type
• Built to meet or exceed OE/OES standards

First Time Fit Product Line

Denso First Time Fit ignition wire sets are engineered as direct OE-style replacements. The line focuses on matching the original wire set’s dimensions, terminal style, and performance characteristics so the replacement follows the factory layout on Ford Taurus and Mercury Sable ignition systems.

Detailed Description

This Denso spark plug wire set, part number 671-6260, is made for drivers servicing ignition wire wear on 2004-2006 Ford Taurus and 2004-2005 Mercury Sable models. The 8mm wire design, silicone boot material, and female terminal ends support a factory-like connection at both the spark plug and distributor/coil ends. This part cross-references Autolite 97049 and CARQUEST 35-6339 for the same application.

Common Issues It Can Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark transfer
• Rough idle from deteriorated wire insulation or boot fit
• Ignition voltage leakage from cracked or aged wire sets
• Poor engine performance tied to inconsistent spark delivery

Installation Notes and Tips

Verify each wire routes to the correct cylinder before removal, and replace one wire at a time when possible to preserve firing order. Confirm the female terminal ends seat fully at the spark plug and coil/distributor connections, and inspect nearby ignition components for heat damage or corrosion during service. For fitment, this part fits 2004-2006 Ford Taurus, N/A, and fits 2004-2005 Mercury Sable, N/A.

Quality Assurance

Denso states that First Time Fit ignition wire sets are built to meet or exceed OE/OES standards and are manufactured to match factory-installed wire sets in form, fit, color, and performance.