Denso 671-8009 Spark Plug Wire Set

Denso 8mm Ignition Wire Set for OE-Style Replacement

Denso First Time Fit ignition wire set 671-8009 is built to match the form, fit, color, and performance of the factory-installed wire set. With 8mm insulation and silicone spark plug boots, it is a direct replacement choice for classic Chevrolet, GMC, Buick, and Pontiac applications that need dependable ignition transfer.

Key Features

• 8mm insulation outside diameter for OE-style routing and fit
• Silicone spark plug boot material for heat resistance and flexibility
• 90-degree spark plug end boot design for tight engine bay routing
• Female spark plug end terminal type
• Female distributor/coil end terminal type
• Built to meet or exceed OE/OES construction standards
• Compatible with HEI-equipped applications listed below

Product Line Details

Denso First Time Fit ignition wire sets are engineered as direct OE-style replacements. The line focuses on matching factory dimensions and connection style so the wire set installs and performs like the original equipment on the vehicle.

Detailed Description

This Denso spark plug wire set, part number 671-8009, is made for drivers restoring or maintaining older GM vehicles that require an 8mm ignition wire setup. It is listed for applications including 1973-1977 Chevrolet Camaro, 1975-1977 Chevrolet C10, and 1975-1977 GMC Jimmy, along with additional Buick, Pontiac, and Chevrolet models from 1973-1977. The OE-style construction helps preserve proper terminal engagement, boot fit, and ignition routing on factory-style systems.

This part cross-references NAPA Mileage Plus 6718009 and Wells QW823 for the same application.

What It Helps Address

• Misfires caused by worn or heat-damaged plug wires
• Hard starting related to weak spark delivery
• Intermittent ignition performance from deteriorated terminals
• Boot cracking or loss of flexibility near the spark plug end
• Routing issues on HEI-equipped classic GM ignition systems

Installation Notes and Fitment

Verify engine layout, distributor style, and wire routing before installation. Use the existing factory routing path where possible to maintain separation between wires and reduce crossfire risk. Fits 1973-1974 Chevrolet Camaro, N/A; Fits 1974 Chevrolet Bel Air, N/A; Fits 1975-1977 Chevrolet C10, N/A; Fits 1975-1977 Chevrolet C10 Suburban, N/A; Fits 1975-1977 Chevrolet C20, N/A; Fits 1975-1977 Chevrolet C20 Suburban, N/A; Fits 1975-1977 Chevrolet C30, N/A; Fits 1975-1977 Chevrolet El Camino, N/A; Fits 1976-1977 Chevrolet G10, N/A; Fits 1975-1977 Chevrolet G20, N/A; Fits 1975-1977 Chevrolet G30, N/A; Fits 1975-1977 Chevrolet K10, N/A; Fits 1975-1977 Chevrolet K10 Suburban, N/A; Fits 1975-1977 Chevrolet K20, N/A; Fits 1975-1977 Chevrolet K20 Suburban, N/A; Fits 1977 Chevrolet K30, N/A; Fits 1975-1977 Chevrolet K5 Blazer, N/A; Fits 1975-1977 Chevrolet Malibu, N/A; Fits 1975-1977 Chevrolet Monte Carlo, N/A; Fits 1977 Chevrolet P10, N/A; Fits 1975 Chevrolet P10, N/A; Fits 1975-1977 Chevrolet P20, N/A; Fits 1975-1977 Chevrolet P30, N/A; Fits 1976-1977 GMC G15, N/A; Fits 1975-1977 GMC G25, N/A; Fits 1975-1977 GMC G35, N/A; Fits 1975-1977 GMC Jimmy, N/A; Fits 1976-1977 Pontiac Grand LeMans, N/A; Fits 1977 Pontiac Laurentian, N/A; Fits 1976-1977 Pontiac LeMans, N/A; Fits 1977 Pontiac Parisienne, N/A; Fits 1977 Pontiac Phoenix, N/A; Fits 1975-1976 Chevrolet Caprice, N/A; Fits 1975-1976 Chevrolet Impala, N/A; Fits 1976 Chevrolet Monza, N/A; Fits 1975-1976 Chevrolet Nova, N/A; Fits 1975 Chevrolet Bel Air, N/A; Fits 1975 Chevrolet G10, N/A; Fits 1975 Chevrolet G20, N/A; Fits 1975 Chevrolet G30, N/A; Fits 1975 GMC G15, N/A; Fits 1975 GMC G25, N/A; Fits 1975 GMC G35, N/A; Fits 1974 Chevrolet Bel Air, N/A; Fits 1974 Chevrolet Camaro, N/A; Fits 1973-1974 Chevrolet Caprice, N/A; Fits 1974 Chevrolet El Camino, N/A; Fits 1974 Chevrolet Impala, N/A; Fits 1974 Chevrolet Malibu, N/A; Fits 1974 Chevrolet Monte Carlo, N/A; Fits 1973-1974 Chevrolet Nova, N/A.

Quality Assurance

Denso manufactures this ignition wire set to meet or exceed OE/OES standards for construction and performance. The First Time Fit line is built for factory-style replacement on the listed Chevrolet, GMC, Buick, and Pontiac applications.