Denso 671-8105 Spark Plug Wire Set

Denso 671-8105 Ignition Wire Set

Denso 671-8105 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct OE-style replacement for classic Ford, Lincoln, Mercury, and Jeep applications that need dependable ignition wire routing and terminal fit.

The Denso 7mm product line focuses on OE-style construction for consistent ignition performance and accurate fitment on older vehicles such as the Ford F-150, Ford Bronco, and Mercury Marquis.

Key Features

• 7mm insulation outside diameter for OE-style wire routing
• Silicone spark plug boot material for heat resistance and flexibility
• Female spark plug end terminal type with 180-degree boot angle
• Male distributor or coil end terminal type
• Built to meet or exceed OE/OES standards
• Direct replacement for Denso 671-8105 applications

Detailed Description

This Denso spark plug wire set is engineered for vehicles that require a factory-style ignition lead layout and terminal configuration. The 7mm wire diameter, silicone boot material, and OE-matched form help maintain secure connections at the spark plug and distributor or coil end. It is a practical replacement choice for classic Ford truck and car applications, including Ford F-100, Ford F-150, Ford Bronco, Mercury Cougar, and Jeep Wagoneer fitments.

This part cross-references ACDelco 16-808R and Bosch 09612 for the same application.

Common Problems This Part Can Address

• Cracked or heat-damaged ignition wire insulation
• Loose or worn spark plug terminal connections
• Misfire caused by deteriorated wire routing or boot fit
• Hard starting related to aging ignition leads
• Intermittent ignition performance from worn OE-style wires

Installation Notes and Tips

• Verify engine-specific routing before removing the original wire set.
• Match each lead to the correct spark plug and distributor or coil location.
• Inspect plug towers, distributor cap terminals, and coil terminals for wear before installation.
• Confirm the 180-degree spark plug boot orientation clears nearby components.
• Use the vehicle fitment list to confirm the exact year and model, including Ford LTD, Mercury Montego, and Lincoln Continental applications.

Quality Assurance

Denso states that First Time Fit ignition wire sets are built to OE/OES standards and are intended to match factory-installed wire sets in form, fit, color, and performance. Compatible With 1972-1976 Ford LTD, 1973-1976 Ford Thunderbird, 1975-1976 Ford F-250, and other listed applications.