Denso 671-8011 Spark Plug Wire Set

Denso 8mm Spark Plug Wire Set

Denso First Time Fit ignition wire sets are built to match the form, fit, color, and performance of the original factory wire set. This Denso 8mm spark plug wire set, part number 671-8011, is made for older Chevrolet and GMC truck applications that use an 8mm wire specification and a cast iron exhaust manifold setup on select models.

With silicone spark plug boot material, a female distributor coil end terminal, and a 180-degree spark plug end boot, this wire set is built for direct OE-style replacement service. If you are searching for a Denso 671-8011 ignition wire set for Chevrolet C20, C30, K30, or GMC C2500 and related heavy-duty applications, this part is listed for the factory-style fitment shown below.

Key Features

• Denso First Time Fit ignition wire set
• 8mm insulation outside diameter
• Silicone spark plug boot material
• Female distributor coil end terminal type
• 180-degree spark plug end boot design
• Built to meet or exceed OE/OES standards in construction
• Part number 671-8011

Fitment Details

• Fits 1985-1986 Chevrolet C20, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 Chevrolet C20 Suburban, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 Chevrolet C30, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 Chevrolet K30, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 Chevrolet P30, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 GMC C2500, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 GMC C2500 Suburban, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 GMC C3500, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 GMC K3500, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985-1986 GMC P3500, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1985 Chevrolet K20 Suburban, N/A, Cast Iron Exhaust Manifold; 8mm
• Fits 1983-1984 Chevrolet C20, N/A, 8mm
• Fits 1983-1984 Chevrolet C20 Suburban, N/A, 8mm
• Fits 1983-1984 Chevrolet C30, N/A, 8mm
• Fits 1983-1984 Chevrolet K30, N/A, 8mm
• Fits 1983-1984 Chevrolet P30, N/A, 8mm
• Fits 1983-1984 GMC C2500, N/A, 8mm
• Fits 1983-1984 GMC C2500 Suburban, N/A, 8mm
• Fits 1983-1984 GMC C3500, N/A, 8mm
• Fits 1983-1984 GMC K3500, N/A, 8mm
• Fits 1983-1984 GMC P3500, N/A, 8mm

What This Wire Set Helps Address

• Misfires caused by worn or heat-damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from deteriorated wire insulation or boot sealing
• Intermittent ignition performance on Chevrolet C20 and GMC C2500 truck applications
• Service replacement needs for 1983-1986 Chevrolet and GMC heavy-duty platforms

Installation Notes and Tips

Verify engine and exhaust-manifold configuration before ordering, since some listed applications specify a cast iron exhaust manifold and 8mm wire setup. Route each lead to match the original path, keep wires separated where possible, and confirm the female terminals fully seat at the distributor coil end and spark plug end. For search relevance, this Denso 671-8011 wire set is commonly referenced for Chevrolet C20, Chevrolet C30, and GMC C3500 ignition service.

This part cross-references ACDelco 618G and Bosch 09603 for the same application.

Quality Assurance

Denso positions the First Time Fit line as an OE-style replacement program, with each wire set built to match factory form and performance expectations. The construction is specified to meet or exceed OE/OES standards, making this Denso 8mm spark plug wire set a direct replacement choice for listed Chevrolet and GMC applications.