Denso 671-8054 Spark Plug Wire Set

Denso 7mm Spark Plug Wire Set

Denso First Time Fit ignition wire sets are built to match factory-installed wire sets in form, fit, color, and performance. This Denso 7mm spark plug wire set, part number 671-8054, is a direct OE-style replacement for select Chevrolet, GMC, and Cadillac applications.

With silicone spark plug boot material, a 90-degree spark plug end boot, and female terminals at both the spark plug and distributor/coil ends, this wire set is built for clean routing and secure connections. The 7.00 mm insulation outside diameter supports the OE-style 7mm fitment used on many GM trucks and SUVs.

Key Features

• Denso First Time Fit ignition wire set for OE-style replacement
• 7mm insulation outside diameter for factory-style routing
• Silicone spark plug boot material for heat resistance and flexibility
• 90-degree spark plug end boot for tighter engine bay routing
• Female spark plug end terminal type and female distributor/coil end terminal type
• Built to meet or exceed OE/OES standards in construction

Product Details

The Denso 671-8054 spark plug wire set is engineered for vehicles that require a 7mm ignition wire configuration. It is a practical choice for owners servicing ignition systems on Chevrolet Express 1500, Chevrolet Tahoe, GMC Yukon, and related GM platforms where consistent spark delivery and proper terminal fit are important. This part cross-references NAPA Mileage Plus (e.g., 6718054) for the same application.

Use this wire set when replacing aging ignition wires that no longer maintain reliable connection quality or original routing. The OE-style construction helps preserve the factory fit expected on 1996-2002 Chevrolet Express 1500, 1996-2000 GMC K2500, and 1999-2000 Cadillac Escalade applications.

What It Helps Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark transfer
• Intermittent ignition performance from poor terminal contact
• Routing issues after heat-related boot deterioration
• Loss of factory-style wire fit on GM truck and van applications

Installation Notes and Tips

Verify wire routing against the original layout before removal to avoid crossfire or incorrect cylinder placement. Confirm the 7mm wire size, female terminal style, and 90-degree spark plug boot angle match the vehicle’s OE configuration before installation. For best results, inspect related ignition components such as spark plugs, distributor cap, and coil connections during service.

Compatible With 1996-2002 Chevrolet Express 1500, 1996-2002 Chevrolet Express 2500, 1996-2002 Chevrolet Express 3500, 1996-2002 GMC Savana 1500, 1996-2002 GMC Savana 2500, 1996-2002 GMC Savana 3500, 1999-2000 Cadillac Escalade, 1996-2000 Chevrolet Tahoe, and other listed Chevrolet and GMC applications. Part number 671-8054 is also listed for multiple GM truck and SUV fitments, including Chevrolet C1500, GMC K1500, and Chevrolet K2500 Suburban.

Quality Assurance

Denso positions this First Time Fit wire set as an OE-style replacement built to meet or exceed OE/OES standards. That focus on factory-style form and performance makes the Denso 671-8054 a solid service part for maintaining original ignition system specifications.