Denso 671-8003 Spark Plug Wire Set

Denso 671-8003 Spark Plug Wire Set

Denso 671-8003 is a 7mm spark plug wire set built to match the form, fit, color, and performance of the original factory wire set. It is a direct OE-style ignition wire replacement for drivers looking for stable spark delivery and consistent engine operation.

Compatible With select vehicle applications, including Honda Civic ignition service where OE-style wire routing and terminal fit are required. The Denso 671-8003 part number is also a useful reference when cross-shopping ignition wire sets for the same application.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire construction
• Silicone spark plug boot material for heat resistance and flexibility
• 180-degree spark plug end boot design for routing in tight engine bays
• Female spark plug end terminal type
• Female distributor/coil end terminal type
• Built to meet or exceed OE/OES standards in construction and performance
• Direct replacement reference: Denso 671-8003

Product Details

Denso First Time Fit ignition wire sets are engineered to mirror the original equipment wire set in fit and performance. The 7mm wire diameter, silicone boots, and female terminals support secure connections at the spark plug and distributor or coil end. For owners searching for a Denso 671-8003 spark plug wire set for Honda Civic ignition repair, this OE-style design helps restore proper ignition routing and dependable electrical transfer.

This part cross-references NAPA Mileage Plus 6718003 for the same application.

What It Helps Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark transfer
• Rough idle from inconsistent ignition output
• Engine hesitation under load
• Cracked boots or deteriorated wire insulation

Installation Notes and Tips

Match each wire to the original routing before removal to avoid crossfire or incorrect cylinder order. Inspect plug wells, coil towers, and distributor terminals for corrosion or carbon tracking before installing the new set. Confirm terminal style and boot angle match the vehicle’s OE configuration before final installation.

Quality Assurance

Denso First Time Fit ignition wire sets are produced to OE/OES-level standards for form, fit, color, and performance. The 671-8003 is built as an OE-style replacement for applications that require factory-like ignition wire construction.