Denso 671-4007 Spark Plug Wire Set

Denso 7mm Spark Plug Wire Set

Denso First Time Fit ignition wire sets are built to match the original wire set in form, fit, color, and performance. This Denso 7mm spark plug wire set uses silicone spark plug boot material and OE-style terminal configurations for direct replacement service on select Chrysler, Dodge, Mazda, Mitsubishi, and Plymouth applications.

Part number 671-4007 is a 7mm ignition wire set for vehicles such as the Dodge Ram 50, Mitsubishi Montero, and Mitsubishi Starion. It is made for owners looking for an OE-style ignition wire replacement that follows factory routing and connection style.

Key Features

• 7.00 mm 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 design
• Female spark plug end terminal type
• Male distributor coil end terminal type
• Built to meet or exceed OE/OES standards in construction
• First Time Fit line matches factory-installed wire sets in form, fit, color, and performance

Product Details

Denso 671-4007 is part of the First Time Fit product line, which focuses on direct OE-style replacement for ignition service. The wire set is engineered for consistent electrical transfer and factory-like fitment on select 1971-1989 Chrysler, Dodge, Mazda, Mitsubishi, and Plymouth vehicles. If you are replacing worn ignition wires on a Dodge Colt, Mitsubishi Mighty Max, or Plymouth Conquest, this part number 671-4007 provides a factory-style solution without changing the original connection layout.

This part cross-references NGK (e.g., KRX51, ME51) for the same application.

What It Helps Address

• Misfires caused by aged or damaged spark plug wires
• Hard starting related to weak ignition transfer
• Rough idle from inconsistent spark delivery
• Voltage leakage from cracked or deteriorated wire insulation
• Fitment issues when replacing non-OE-style ignition leads

Installation Notes

Verify engine application, model year, and ignition routing before installation. This wire set uses a 180-degree spark plug boot, female spark plug end terminals, and a male distributor coil end terminal, so matching the original terminal style is important for proper connection. Confirm whether your vehicle falls within the listed date-specific notes, including applications marked to 11/86 or from 12/86.

Compatible With select applications including Fits 1987-1989 Chrysler Conquest, N/A; Fits 1988-1989 Dodge Raider, N/A; Fits 1983-1989 Dodge Ram 50, N/A; Fits 1987-1989 Mazda B2600, N/A; Fits 1988-1989 Mitsubishi Montero, N/A; Fits 1985-1986 Mitsubishi Montero, N/A; Fits 1985-1989 Mitsubishi Starion, N/A; Fits 1971-1988 Dodge Colt, N/A; Fits 1987 Mazda B2000, N/A; Fits 1987 Mitsubishi Cordia, N/A; Fits 1987 Mitsubishi Galant, N/A; Fits 1987 Mitsubishi Mighty Max, N/A; Fits 1987 Mitsubishi Montero, N/A; Fits 1987 Mitsubishi Tredia, N/A; Fits 1987 Mitsubishi Van, N/A; Fits 1984-1986 Dodge Conquest, N/A; Fits 1985-1986 Mitsubishi Cordia, N/A; Fits 1983-1986 Mitsubishi Mighty Max, N/A; Fits 1985-1986 Mitsubishi Mirage, N/A; Fits 1985-1986 Mitsubishi Tredia, N/A; Fits 1984-1986 Plymouth Conquest, N/A; Fits 1985 Chrysler LeBaron, N/A; Fits 1985 Chrysler New Yorker, N/A; Fits 1985 Chrysler Town & Country, N/A; Fits 1985 Dodge 600, N/A; Fits 1985 Dodge Aries, N/A; Fits 1985 Plymouth Reliant, N/A; Fits 1983-1984 Dodge Power Ram 50, N/A; Fits 1979-1982 Dodge D50, N/A; Fits 1978-1981 Dodge Challenger, N/A.

Quality Assurance

Denso states that First Time Fit ignition wire sets are built to OE/OES standards or better, with construction intended to match factory-installed wire sets in fit and performance.