Denso 671-4200 Spark Plug Wire Set

Reliable Spark Plug Wire Set for Nissan 720, D21, and Pathfinder

The Denso 8mm Spark Plug Wire Set (Part Number 671-4200) is engineered to provide consistent ignition performance for Nissan vehicles including the 720, D21, and Pathfinder models. Designed with durable silicone boots and precise terminal configurations, this set ensures optimal electrical conductivity and engine efficiency.

Key Features of the Denso 671-4200 Spark Plug Wire Set

• Silicone spark plug boot material for heat resistance and durability
• 8.00 mm insulation outside diameter for effective electrical insulation
• 180-degree spark plug end boot angle to fit tight engine compartments
• Female spark plug end terminal type and male distributor coil end terminal type for secure connections
• Includes 8 straight spark plug end boots for complete wire set replacement

Detailed Description of the 8mm Brand Line Spark Plug Wire Set

The Denso 8mm brand line focuses on delivering spark plug wire sets with an 8.00 mm insulation diameter, balancing flexibility and electrical insulation. This particular set, part number 671-4200, features silicone boots that withstand high temperatures and resist cracking, which is critical for maintaining ignition system integrity. The 180-degree spark plug end boot design allows for easier routing in engine bays with limited space, while the combination of female spark plug end terminals and male distributor coil end terminals ensures compatibility with Nissan 720, D21, and Pathfinder ignition systems.

Applications and Common Issues Addressed

• Replacement of worn or damaged spark plug wires in Nissan 720, D21, and Pathfinder models
• Resolving misfires caused by poor electrical conductivity or insulation breakdown
• Eliminating ignition noise interference due to degraded wire insulation
• Improving engine starting and performance consistency
• Preventing voltage leaks that can affect ignition coil and spark plug operation

Installation Notes and Tips

• Ensure the engine is cool before removing old spark plug wires to avoid damage
• Replace wires one at a time to maintain correct firing order
• Verify the 180-degree spark plug boot orientation fits your engine layout
• Check that the male distributor coil end terminals seat firmly to prevent loose connections
• Inspect boots for proper seating on spark plugs and distributor coil to avoid arcing

Quality Assurance and Warranty Information

Denso manufactures the 671-4200 spark plug wire set to meet OEM specifications for Nissan vehicles, ensuring reliable performance and durability. The use of silicone boots and precise terminal types supports long-term resistance to heat and wear. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed quality assurance to support automotive maintenance needs.