Denso 671-4137 Spark Plug Wire Set

Reliable Spark Plug Wire Set for Toyota 4Runner and Pickup

The Denso 5mm Spark Plug Wire Set (Part Number 671-4137) is engineered to provide consistent ignition performance for Toyota 4Runner and Pickup models. Designed with durable silicone boots and precise terminal configurations, this set ensures optimal electrical conductivity and engine efficiency.

• Silicone spark plug boot material for heat resistance and durability
• 5.00 mm insulation outside diameter for effective electrical insulation
• 180-degree spark plug end boot angle for proper fitment
• Female spark plug end terminal and male distributor coil end terminal
• Includes four straight spark plug end boots for complete replacement

About the Denso 5mm Brand Line

The Denso 5mm brand line focuses on ignition wire sets with a 5.00 mm insulation diameter, balancing flexibility and electrical insulation. This line is designed to meet the specific ignition requirements of vehicles like the Toyota 4Runner and Pickup, providing reliable spark delivery and resistance to heat and wear.

Product Details and Specifications

This spark plug wire set features silicone boots that withstand high temperatures and resist cracking, ensuring long-term durability. The 180-degree spark plug end boot angle allows for proper alignment and secure connection to the spark plugs. The female terminal at the spark plug end and male terminal at the distributor coil end are designed to match factory specifications for Toyota 4Runner and Pickup ignition systems. With an insulation outside diameter of 5.00 mm, these wires provide effective protection against electrical interference and arcing.

Common Applications and Issues Addressed

• Replacement for worn or damaged spark plug wires in Toyota 4Runner and Pickup
• Resolves misfires caused by poor spark plug wire connections
• Eliminates engine hesitation due to degraded ignition wire insulation
• Prevents electrical interference affecting ignition timing
• Improves overall engine performance and fuel efficiency

Installation Notes and Tips

When installing the Denso 671-4137 spark plug wire set, ensure that the 180-degree spark plug end boots are properly seated on the spark plugs for a secure fit. Verify that the male distributor coil end terminals are firmly connected to the coil to maintain optimal electrical contact. It is recommended to replace all wires simultaneously to maintain balanced ignition performance. Handle the silicone boots carefully to avoid damage during installation.

Quality Assurance and Warranty

Denso manufactures this spark plug wire set to meet OEM standards for fit, form, and function. The use of high-quality silicone and precise terminal design supports reliable ignition system operation. While specific warranty details are not provided, Denso products typically adhere to strict quality control processes to ensure durability and performance.