Denso 671-4263 Spark Plug Wire Set

Denso 671-4263 Spark Plug Wire Set

Denso 671-4263 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct OE-style ignition wire replacement for drivers who need consistent spark delivery and dependable engine operation.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing
• Silicone spark plug boot material for heat resistance and flexibility
• Female distributor coil end terminal type
• Female spark plug end terminal type with 180-degree boot angle
• Built to meet or exceed OE/OES standards
• Direct replacement for Denso 671-4263 applications

Product Details

The Denso First Time Fit line focuses on factory-style ignition service, and this wire set follows that approach with OE-matching construction and terminal design. The 7mm profile supports clean routing in the engine bay, while the silicone boots help maintain a secure connection at the spark plug end and coil or distributor end. For owners searching for a spark plug wire set for Honda Civic or Toyota Corolla ignition service, Denso 671-4263 provides a straightforward OE replacement option. This part cross-references NGK KRX004 for the same application.

Common Issues It Can Help Address

• Misfires caused by worn or damaged ignition wires
• Hard starting from weak spark transfer
• Rough idle related to deteriorated wire insulation
• Engine hesitation under load from inconsistent ignition output
• Voltage leakage from cracked or heat-aged wire boots

Installation Notes and Tips

Match each wire to the original routing before removal to avoid crossfire or interference with hot or moving components. Inspect the coil and spark plug terminals for corrosion or carbon tracking before installation. Confirm the vehicle uses female terminal ends and a 180-degree spark plug boot configuration before ordering. Fits 2006-2011 Honda Civic, front right. Fits 2003-2008 Toyota Corolla, front right.

Quality Assurance

Denso First Time Fit ignition wire sets are engineered to align with OE service expectations and are manufactured to meet or exceed OE/OES standards. Part number 671-4263 is built for consistent fit and ignition performance in the listed applications.