Denso 671-4268 Spark Plug Wire Set

Denso 671-4268 Ignition Wire Set

Denso 671-4268 is a First Time Fit spark plug wire set built to match the form, fit, color, and performance of the original factory wiring. It is a direct replacement for select Mazda Protege and Mazda Protege5 applications, with OE-style construction that meets or exceeds original equipment standards.

Key Features

• OE-style spark plug wire set for ignition service
• 5mm insulation outside diameter for the specified application
• Sil PBT Sil spark plug boot material for heat and durability support
• 180-degree spark plug end boot design
• Female spark plug end terminal type with male distributor/coil end terminal type
• Built to match factory-installed wire set dimensions and performance characteristics
• Cross-reference: NAPA Mileage Plus 6714268

Product Details

This Denso ignition wire set is engineered for 2001-2003 Mazda Protege and 2002-2003 Mazda Protege5 vehicles with the 5mm specification listed in the fitment data. The Denso First Time Fit line focuses on OE-style replacement parts that follow original dimensions and connection styles, making this part number 671-4268 a practical choice when replacing worn ignition leads on a Mazda Protege or Mazda Protege5.

The wire set uses Sil PBT Sil boot material, a 180-degree spark plug end boot, and the terminal types listed for the distributor/coil and spark plug ends. Those details matter for secure connection, proper routing, and consistent ignition transfer in the specified Mazda applications.

Used For

• Replacing cracked or heat-aged ignition wires
• Restoring weak spark transfer caused by worn wire insulation
• Addressing misfire symptoms tied to deteriorated plug wires
• Correcting rough idle or hesitation related to ignition wire wear
• Servicing factory-style ignition routing on Mazda Protege and Mazda Protege5 models

Installation Notes and Tips

Verify engine application and wire routing before removal so each lead returns to the correct cylinder and coil/distributor connection. Inspect spark plugs, boots, and nearby ignition components during installation, and confirm the terminals seat fully at both ends. For best results, compare the existing wire length, boot angle, and connector style to the listed specifications for Denso 671-4268 before installation.

Quality Assurance

Denso First Time Fit ignition wire sets are built to OE/OES standards for form, fit, color, and performance. This part is manufactured to follow the original equipment style expected for the listed Mazda Protege and Mazda Protege5 applications.