Denso 671-4057 Spark Plug Wire Set

Denso 671-4057 Ignition Wire Set

Denso 671-4057 is a spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct replacement for select Ford Escort and Mercury Tracer applications, with OE-style construction for consistent ignition transfer.

Key Features

• 8mm insulation outside diameter for OE-style wire routing and fit
• Silicone spark plug boot material for heat resistance and flexibility
• 145-degree spark plug end boot for tight engine bay routing
• Female spark plug end terminal type
• Male distributor coil end terminal type
• Built to meet or exceed OE/OES standards
• Compatible With 1991-1996 Ford Escort and 1991-1996 Mercury Tracer applications

Product Details

This Denso First Time Fit ignition wire set is engineered as an OE-style replacement for vehicles that require precise ignition wire length, terminal style, and boot angle. The 8mm design, silicone boot material, and 145-degree angled spark plug boots support proper routing around engine components while maintaining a secure connection at the spark plug and coil ends. For buyers searching for a Denso 671-4057 spark plug wire set for Ford Escort or Mercury Tracer, this part provides a direct-fit solution aligned with factory specifications.

The Denso First Time Fit product line focuses on replacement ignition components that mirror original equipment dimensions and performance characteristics. This makes the 671-4057 a practical choice when replacing worn ignition wires on 1991-1996 Ford Escort and 1991-1996 Mercury Tracer models.

This part cross-references NGK ZX18 for the same application.

Common Problems This Part Can Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition transfer
• Voltage leakage from cracked or deteriorated wire insulation
• Poor terminal connection at the spark plug or coil end

Installation Notes

Verify wire routing against the original layout before removal to avoid crossfire or incorrect cylinder connection. Match the female spark plug terminals and male coil end terminal to the vehicle’s ignition system before installation. Inspect plugs, distributor components, and coil condition at the same time to confirm the ignition system is in proper working order.

Quality Assurance

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

• Fits 1991-1996 Ford Escort, N/A
• Fits 1991-1996 Mercury Tracer, N/A