Denso 671-6059 Spark Plug Wire Set

Denso 671-6059 Ignition Wire Set

Denso 671-6059 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is made for direct replacement on select Chevrolet Silverado 1500 and GMC Sierra 1500 applications, with OE-style construction that meets or exceeds OE/OES standards.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing and fit
• Silicone spark plug boot material for heat resistance and durability
• 180-degree spark plug end boot design
• Female spark plug end terminal type
• Female distributor/coil end terminal type
• Built to match factory-installed wire set dimensions and appearance

Product Details

The Denso First Time Fit line focuses on direct OE replacement, and the 671-6059 spark plug wire set follows that approach with factory-style construction and terminal design. This part number is listed for 1999-2001 Chevrolet Silverado 1500 and 1999-2001 GMC Sierra 1500, making it a targeted ignition wire replacement for those 7mm applications. If you are searching for Denso 671-6059 for a Chevrolet Silverado 1500 or GMC Sierra 1500 ignition service, this wire set is built for the original equipment layout and connection style.

This part cross-references ACDelco 766D and Bosch 09458 for the same application.

Common Replacement Reasons

• Cracked or heat-damaged spark plug wire insulation
• Misfire caused by worn ignition wire terminals
• Hard starting related to weak spark delivery
• Intermittent ignition performance from deteriorated wire boots
• Service replacement for aging factory-style ignition wires

Installation Notes

Verify engine application before installation and route each wire to match the original layout. Confirm the female terminal ends and 180-degree spark plug boot orientation before connecting to the plugs and coil or distributor side. For best results, replace wires one at a time to preserve firing order and reduce the chance of cross-connection.

Quality Assurance

Denso First Time Fit ignition wire sets are engineered to meet or exceed OE/OES standards and are produced to match factory-installed specifications for fit and performance.