Denso 671-8080 Spark Plug Wire Set

Denso 8mm Spark Plug Wire Set for Ford V8 Applications

Denso 671-8080 is an 8mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct OE-style ignition wire replacement for select Ford trucks and vans, including Ford F-150, F-250, F-350, Bronco, and Econoline models.

Key Features

• 8.00 mm insulation outside diameter for OE-style ignition wire routing and protection
• Silicone spark plug boot material for heat resistance and flexibility
• Female distributor coil end terminal type
• Female spark plug end terminal type
• 115-degree spark plug end boot angle for proper connection clearance
• Built to meet or exceed OE/OES standards in construction
• Direct replacement part number: 671-8080

Product Details

Denso First Time Fit ignition wire sets are engineered to mirror the original wire set specification used on the vehicle. For Ford ignition systems that require an 8mm wire set, this part provides the correct boot style, terminal configuration, and insulation diameter for a factory-like replacement. The Denso 671-8080 is a practical choice for restoring ignition performance on older Ford F-150, F-250, F-350, Bronco, and Econoline applications where accurate fitment matters.

This part cross-references ACDelco 16-818D and Bosch 09635 for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or heat-damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from deteriorated wire insulation or boot wear
• Voltage leakage across aging ignition wire insulation
• Poor terminal contact at the spark plug or coil connection

Installation Notes and Tips

Verify the existing wire routing, terminal style, and boot angle before installation. Match each lead to the original cylinder location and confirm the female terminal ends seat fully at the spark plug and distributor or coil connection. On Ford F-150, F-250, F-350, Bronco, and Econoline models, correct routing helps prevent crossfire, heat exposure, and contact with exhaust components.

• Fits 1988-1997 Ford F-350, N/A
• Fits 1988-1996 Ford Bronco, N/A
• Fits 1988-1996 Ford E-150 Econoline, N/A
• Fits 1988-1996 Ford E-150 Econoline Club Wagon, N/A
• Fits 1988-1996 Ford E-250 Econoline, N/A
• Fits 1988-1996 Ford E-350 Econoline, N/A
• Fits 1988-1996 Ford E-350 Econoline Club Wagon, N/A
• Fits 1988-1996 Ford F-150, N/A
• Fits 1988-1996 Ford F-250, N/A
• Fits 1988-1991 Ford E-250 Econoline Club Wagon, N/A

Quality Assurance

Denso positions the First Time Fit line as an OE-style replacement range, with each wire set built to meet or exceed OE/OES standards for construction and performance. That makes Denso 671-8080 a specification-focused ignition wire set for Ford applications that need the correct 8mm configuration.