Denso 671-8063 Spark Plug Wire Set

Reliable Spark Plug Wire Set for GM Vehicles

The Denso 7mm Spark Plug Wire Set (Part Number 671-8063) is engineered to provide consistent ignition performance for a range of General Motors vehicles. Designed with durable silicone boots and precise terminal configurations, this set ensures reliable spark delivery for models like the Chevrolet Silverado and Cadillac Escalade.

• Silicone spark plug boot material for heat resistance and durability
• 7.00 mm insulation outside diameter for optimal electrical insulation
• Female distributor coil end terminals for secure connections
• 180-degree spark plug end boots with female terminals for proper fitment
• Includes 8 straight spark plug end boots for complete wire set coverage

About the Denso 7mm Brand Line

The Denso 7mm product line focuses on ignition wire sets with a 7.00 mm insulation diameter, balancing flexibility and electrical insulation. This line is designed to meet the specific ignition system requirements of various GM trucks and SUVs, providing reliable spark transmission and resistance to heat and wear. The 7mm wires are suitable for vehicles requiring a robust yet flexible ignition wire solution.

Detailed Product Description

This spark plug wire set features silicone boots that offer excellent resistance to high temperatures and environmental factors, helping to maintain performance under demanding conditions. The female terminal design on both the distributor coil end and spark plug end ensures a secure and stable connection, reducing the risk of misfires. The 180-degree spark plug end boots provide a proper fit for tight engine compartments commonly found in vehicles like the GMC Sierra and Hummer H2. With eight straight spark plug end boots included, this set covers all cylinders for compatible V8 engines.

Common Applications and Issues Addressed

• Replacement for worn or cracked spark plug wires causing misfires
• Improves ignition system reliability in Chevrolet Avalanche and Suburban 1500
• Resolves poor engine performance due to degraded insulation or faulty connections
• Prevents electrical interference affecting sensitive onboard electronics
• Suitable for restoring ignition efficiency in Cadillac Escalade and Yukon XL 1500

Installation Notes and Tips

• Ensure engine is cool before removing old spark plug wires
• Replace wires one at a time to maintain correct firing order
• Verify that female terminals are fully seated on distributor coil and spark plugs
• Route wires away from hot engine components and moving parts
• Check for proper boot seating to prevent moisture intrusion

Quality Assurance and Warranty

Denso manufactures this spark plug wire set to meet OEM specifications for fit and function. The use of high-quality silicone and precise terminal construction supports long-term durability. While specific warranty details may vary, Denso products typically come with a limited warranty against defects in materials and workmanship, providing confidence in product reliability.