Denso 671-6173 Spark Plug Wire Set

Denso 671-6173 Ignition Wire Set

Denso 671-6173 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 select Toyota 4Runner and Toyota Pickup applications from 1988-1991.

The 7mm Denso First Time Fit line focuses on OE-level construction and consistent electrical performance. For buyers searching for a Toyota 4Runner spark plug wire set or Toyota Pickup ignition wire replacement, this part number 671-6173 provides a factory-style solution with the correct terminal and boot design.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing
• Silicone spark plug boot material for heat resistance and flexibility
• 180-degree spark plug end boot design
• Female spark plug end terminal type
• Male distributor coil end terminal type
• Built to meet or exceed OE/OES standards in construction
• Direct replacement for Denso 671-6173 applications

Product Details

Denso First Time Fit ignition wire sets are engineered to mirror the original wire set used on the vehicle, including fit, color, and performance characteristics. This helps maintain proper ignition routing and connection integrity on 1988-1991 Toyota 4Runner and 1988-1991 Toyota Pickup models. The silicone boot material supports reliable connection at the spark plug end, while the 7mm wire diameter matches the specified OE-style configuration.

This part cross-references NGK TX11 and TX12 for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition voltage transfer
• Cracked or heat-aged wire insulation
• Loose or deteriorated spark plug and distributor connections

Installation Notes and Tips

Verify wire routing against the original layout before removal to avoid crossfire or incorrect cylinder connection. Confirm the female spark plug terminal and male distributor coil end terminal match the vehicle’s ignition setup before installation. For Toyota 4Runner and Toyota Pickup ignition service, inspect plugs, cap, and rotor at the same time to help isolate ignition faults.

Quality Assurance

Denso First Time Fit ignition wire sets are manufactured to OE/OES-level standards and are intended to replicate the original equipment specification for the listed Toyota applications.