Denso 671-8029 Spark Plug Wire Set

Denso 8mm 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 8mm spark plug wire set, part number 671-8029, uses silicone spark plug boots and OE-style terminal design for a direct replacement on select Buick, Pontiac, Oldsmobile, and Chevrolet applications.

Key Features

• 8mm insulation outside diameter for OE-style ignition wire routing and fit
• Silicone spark plug boot material for heat resistance and durability
• Female spark plug end terminal type
• Female distributor/coil end terminal type
• 180-degree spark plug end boot design for specific engine bay routing
• Built to meet or exceed OE/OES standards
• Direct replacement part number 671-8029

Product Details

Denso 671-8029 is an ignition wire set engineered for vehicles that require an 8mm wire diameter and female terminal ends. The First Time Fit line is designed to mirror original equipment specifications, helping maintain proper ignition transfer and consistent routing in the engine compartment. This makes it a practical choice for classic GM applications such as Pontiac Firebird, Pontiac Grand Prix, and Buick Regal models where correct wire fitment matters.

This part cross-references ACDelco 608V and Bosch 09667 for the same application. It is also listed under NAPA Mileage Plus 6718029.

Vehicle Fitment

• Fits 1979-1981 Buick Century, N/A
• Fits 1979-1981 Buick Regal, N/A
• Fits 1977-1980 Buick LeSabre, N/A
• Fits 1977 Buick Skylark, N/A
• Fits 1975-1981 Pontiac Bonneville, N/A
• Fits 1975-1981 Pontiac Catalina, N/A
• Fits 1975-1981 Pontiac Firebird, N/A
• Fits 1979-1981 Pontiac Grand LeMans, N/A
• Fits 1975-1977 Pontiac Grand LeMans, N/A
• Fits 1975-1981 Pontiac Grand Prix, N/A
• Fits 1979-1981 Pontiac LeMans, N/A
• Fits 1975-1977 Pontiac LeMans, N/A
• Fits 1978-1980 Pontiac Grand Am, N/A
• Fits 1975 Pontiac Grand Am, N/A
• Fits 1976-1977 Pontiac Laurentian, N/A
• Fits 1976-1977 Pontiac Parisienne, N/A
• Fits 1973-1974 Pontiac Bonneville, N/A, w/ HEI; 8mm
• Fits 1973-1974 Pontiac Catalina, N/A, w/ HEI; 8mm
• Fits 1973-1974 Pontiac Firebird, N/A, w/ HEI; 8mm
• Fits 1973-1974 Pontiac Grand Am, N/A, w/ HEI; 8mm
• Fits 1973-1974 Pontiac Grand Prix, N/A, w/ HEI; 8mm
• Fits 1973-1974 Pontiac LeMans, N/A, w/ HEI; 8mm
• Fits 1973 Pontiac GTO, N/A
• Fits 1979 Oldsmobile Delta 88, N/A
• Fits 1976 Chevrolet Malibu, N/A
• Fits 1976 Chevrolet Monte Carlo, N/A

Installation Notes and Tips

Verify the existing wire routing, terminal style, and boot angle before installation. Match each lead to the correct cylinder and coil or distributor connection, and inspect plug wells, cap terminals, and coil towers for wear before installing the new set. For Pontiac Firebird, Pontiac Grand Prix, and Buick Regal applications, confirm the engine configuration and HEI requirement where listed in the fitment data.

Quality Assurance

Denso First Time Fit ignition wire sets are manufactured to OE-style standards for form, fit, color, and performance. The 8mm construction, silicone boots, and terminal design are selected to match factory-style replacement needs on compatible Buick, Pontiac, Oldsmobile, and Chevrolet vehicles.