Denso 671-4070 Spark Plug Wire Set

Denso 7mm Ignition Wire Set for OE-Style Replacement

Denso 671-4070 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct replacement choice for Jeep Cherokee, Jeep Wrangler, Jeep Comanche, and Dodge Dakota applications listed below.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing and fit
• Silicone spark plug boot material for heat resistance and flexibility
• Female distributor/coil end terminal type
• 90-degree spark plug end boot on one lead for tighter routing clearance
• Straight spark plug end boots on three leads
• Built to meet or exceed OE/OES construction standards
• Part number: 671-4070

Product Details

The Denso First Time Fit line is engineered as an OE-style ignition wire replacement line, and this set follows the same approach with factory-matched form and performance characteristics. The silicone boot construction helps maintain a secure connection at the spark plug end, while the 7mm wire size supports a clean, original-equipment-style installation. If you are replacing worn ignition wires on a Jeep Cherokee, Jeep Wrangler, Jeep Comanche, or Dodge Dakota, Denso 671-4070 provides a direct-fit solution for the listed vehicles.

This part cross-references ACDelco 16-804D and Bosch 09285 for the same application.

Vehicle Fitment

• Fits 1996-2001 Dodge Dakota, N/A, 7mm
• Fits 1991-2000 Jeep Cherokee, N/A, 7mm
• Fits 1997-2000 Jeep Wrangler, N/A, 7mm
• Fits 1991-1995 Jeep Wrangler, N/A, 7mm
• Fits 1991-1992 Jeep Comanche, N/A, 7mm

Common Replacement Reasons

• Engine misfire caused by worn or damaged ignition wires
• Hard starting from weak spark delivery
• Rough idle linked to deteriorated wire insulation or boot wear
• Intermittent ignition performance from poor terminal contact
• Heat-related wire breakdown in older ignition systems

Installation Notes and Tips

Match each wire to the original routing before removal to avoid crossfire and heat exposure issues. Confirm the female distributor/coil end terminals and the 90-degree spark plug boot orientation before installation. For best results, inspect spark plugs, distributor cap, and coil connections at the same time so the new wire set can perform as intended.

Quality Assurance

Denso First Time Fit ignition wire sets are built to OE/OES standards and are intended to replicate factory-installed fit and performance characteristics. Part number 671-4070 is manufactured to the same form and construction expectations used for original-equipment replacement applications.