Denso 671-8123 Spark Plug Wire Set

Denso 7mm Spark Plug Wire Set for OE-Style Ignition Performance

The Denso 7mm Spark Plug Wire Set, part number 671-8123, is built to match the form, fit, color, and performance of the original factory wire set. It is a direct ignition wire replacement for select Chrysler and Dodge applications, including Dodge Dart, Dodge Charger, and Chrysler Newport models with the listed engine and ignition configurations.

Denso’s First Time Fit line focuses on OE-style replacement parts that meet or exceed original equipment standards in construction and performance. If you need a spark plug wire set for a 1967-1976 Dodge Dart, 1968-1974 Dodge Charger, or 1972 Chrysler Newport with electronic ignition, this 7mm wire set is built for that application.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire replacement
• Silicone spark plug boot material for heat resistance and flexibility
• 180-degree spark plug end boot configuration
• Female spark plug end terminal type
• Male distributor coil end terminal type
• Built to match factory-installed wire set form, fit, color, and performance
• Denso First Time Fit product line for direct replacement applications

Detailed Description

Denso 671-8123 is a spark plug wire set engineered for direct replacement on select Dodge and Chrysler vehicles. The 7mm wire diameter supports OE-style routing and fitment, while the silicone boot material helps maintain a secure connection at the spark plug end and distributor/coil end. This part is listed for applications such as Fits 1967-1976 Dodge Dart, N/A; Fits 1968-1974 Dodge Charger, N/A; and Fits 1972 Chrysler Newport, N/A, with additional coverage for other Dodge and Chrysler models in the same fitment group.

This part cross-references NAPA Mileage Plus 6718123 and ACDelco 16-808A for the same application.

What It Helps Address

• Misfires caused by worn or deteriorated ignition wires
• Hard starting related to weak spark delivery
• Rough idle from damaged wire insulation or boot connections
• Intermittent ignition performance from aging factory-style wires
• Voltage leakage across cracked or heat-aged wire jackets

Installation Notes and Tips

Verify engine configuration, ignition type, and routing before installation. This wire set is listed for specific Chrysler and Dodge applications, including high-performance engine versions and electronic ignition setups where noted. Match each lead to the correct cylinder and coil/distributor connection, and inspect plug and cap terminals for corrosion or wear before final assembly.

For best results, route the wires away from hot exhaust components and sharp edges, and confirm that the 180-degree spark plug boots seat fully on the plugs. Use the vehicle fitment details to confirm the exact application for your Dodge Dart, Dodge Charger, or Chrysler Newport before ordering.

Quality Assurance

Denso First Time Fit ignition wire sets are manufactured to OE/OES-level standards for form and performance. The 671-8123 part number is part of Denso’s direct replacement line, built to match factory specifications for the listed Chrysler and Dodge applications.