Denso 671-4065 Spark Plug Wire Set

Denso 671-4065 Ignition Wire Set

Denso 671-4065 is a 7mm spark plug wire set built to match the form, fit, color, and performance of the original factory wire set. It is a direct OE-style replacement for Ford Ranger and Mazda B2300 applications, with construction that meets or exceeds OE/OES standards.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing and fit
• Silicone spark plug boot material for heat resistance and durability
• 120-degree spark plug end boot design for proper terminal alignment
• Female spark plug end terminal type and female distributor/coil end terminal type
• Built to match factory-installed wire set dimensions and performance
• Fits 2001-2011 Ford Ranger, N/A, 7mm
• Fits 2001-2010 Mazda B2300, N/A, 7mm

Product Details

This Denso First Time Fit ignition wire set is engineered for direct replacement service on Ford Ranger and Mazda B2300 models. The 7mm wire diameter, silicone boot construction, and female terminal ends support proper connection at the spark plug and distributor/coil ends, while the 120-degree spark plug boot helps maintain the original wire path and terminal orientation. Part number 671-4065 is also a useful reference when searching for OE-style ignition wire replacement for these vehicles.

Denso’s First Time Fit line focuses on replacement parts that mirror factory-installed specifications, making it a practical choice for drivers looking for a stock-style ignition wire set for Ford Ranger and Mazda B2300 service. This part cross-references NGK FDZ086 and NAPA Mileage Plus 6714065 for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or damaged spark plug wires
• Hard starting related to weak ignition wire conductivity
• Rough idle from cracked insulation or poor terminal contact
• Ignition voltage leakage from aged wire boots
• Intermittent engine performance issues tied to deteriorated wire routing or connections

Installation Notes and Tips

Verify engine application and wire routing before installation. Match each lead to the original routing path to avoid crossfire or heat exposure, and confirm the female terminal ends seat fully at both connection points. For best results, inspect spark plugs, coil/distributor terminals, and related ignition components during replacement on Ford Ranger and Mazda B2300 vehicles.

Quality Assurance

Denso First Time Fit ignition wire sets are built to OE/OES standards for form, fit, color, and performance, providing a factory-style replacement option for 2001-2011 Ford Ranger and 2001-2010 Mazda B2300 applications.