Denso 671-6009 Spark Plug Wire Set

Denso 8mm Spark Plug Wire Set for OE Fit

Denso First Time Fit ignition wire sets are built to match the original wire set in form, fit, color, and performance. This Denso 671-6009 spark plug wire set uses 8mm insulation and silicone spark plug boots for a direct OE-style replacement on select Buick, Chevrolet, Oldsmobile, and Pontiac applications.

Compatible With 1990-1995 Buick Regal, 1991-1995 Buick LeSabre, 1991-1995 Buick Park Avenue, 1991-1995 Buick Riviera, 1992-1995 Chevrolet Lumina APV, 1993-1995 Oldsmobile 88, 1993-1995 Oldsmobile 98, 1992-1995 Oldsmobile Silhouette, 1992-1995 Pontiac Bonneville, and 1992-1995 Pontiac Trans Sport. This part cross-references Bosch 09700 and NAPA Mileage Plus 6716009 for the same application.

Key Features

• 8mm insulation outside diameter for OE-style ignition wire routing and fit
• Silicone spark plug boot material for heat resistance and flexibility
• Female distributor coil end terminal type
• Female spark plug end terminal type
• 180-degree spark plug end boot design for proper connection clearance
• Denso First Time Fit construction engineered to meet or exceed OE/OES standards

Product Details

The Denso 671-6009 is a spark plug wire set designed for vehicles that use an 8mm ignition wire specification and female terminal ends. The First Time Fit line focuses on matching factory-installed dimensions and performance characteristics, making it a practical choice when replacing worn ignition wires on Buick LeSabre, Buick Park Avenue, Buick Regal, Buick Riviera, Chevrolet Lumina APV, Oldsmobile 88, Oldsmobile 98, Oldsmobile Silhouette, Pontiac Bonneville, and Pontiac Trans Sport models. The silicone boot construction supports secure terminal engagement and consistent routing at the spark plug end.

Common Issues This Part Can Address

• Misfires caused by aged or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition transfer
• Voltage leakage from cracked or deteriorated wire insulation
• Poor terminal connection at the spark plug or coil end

Installation Notes and Tips

Verify engine application, terminal style, and wire routing before installation. Match each lead to the original routing path to avoid crossfire and heat exposure. Inspect spark plugs, distributor components, and coil connections at the same time so the new wire set is installed against clean, secure terminals. For fitment confirmation, use the vehicle year, make, model, and ignition configuration listed above.

Quality Assurance

Denso positions First Time Fit ignition wire sets as OE-style replacements built to meet or exceed OE/OES standards. The Denso 671-6009 is manufactured to align with factory form and performance expectations for the listed applications.