Denso 671-8170 Spark Plug Wire Set

Denso 671-8170 Ignition Wire Set

Denso 671-8170 is a 7mm spark plug wire set built to match factory-installed form, fit, color, and performance. It is a direct OE-style ignition wire replacement for select Ram, Dodge, Chrysler, and Jeep applications, including Ram 1500, Dakota, Aspen, Durango, Commander, and Grand Cherokee models.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing and fitment
• Silicone spark plug boot material for heat resistance and durability
• Female distributor/coil end terminal type
• 180-degree spark plug end boot design
• Built to meet or exceed OE/OES standards
• Direct replacement for select 2008-2012 Ram, Dodge, Chrysler, and Jeep vehicles

Product Details

The Denso First Time Fit line focuses on exact replacement characteristics, and this ignition wire set follows that approach with OE-matched construction and performance. The 7mm design supports proper routing and connection integrity, while the silicone boots help maintain a secure seal at the spark plug end. Part number 671-8170 is a practical choice for drivers servicing ignition components on Ram 1500, Dodge Dakota, and related Chrysler and Jeep platforms.

This part cross-references NAPA Mileage Plus 6718170 and PROConnect 138023 for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or heat-damaged plug wires
• Hard starting related to weak ignition transfer
• Rough idle from inconsistent spark delivery
• Voltage leakage from cracked or deteriorated wire insulation
• Poor engine performance on aging ignition wire sets

Installation Notes and Tips

Verify engine application before installation and route each wire to match the original layout. Confirm the female terminal ends and 180-degree spark plug boot orientation align with the vehicle’s ignition system. For best results, inspect spark plugs, coil connections, and routing clips at the same time to avoid repeat ignition faults.

Quality Assurance

Denso First Time Fit ignition wire sets are engineered to match factory-installed specifications and are manufactured to meet or exceed OE/OES standards. That makes 671-8170 a dependable OE-style replacement for select Ram, Dodge, Chrysler, and Jeep ignition systems.