Denso 671-6012 Spark Plug Wire Set

Denso 7mm Spark Plug Wire Set for OE Fit

Denso First Time Fit ignition wire sets are built to match factory-installed wire sets in form, fit, color, and performance. This 7mm spark plug wire set uses silicone boot material and OE-style terminal design for dependable ignition service on a wide range of GM and Isuzu applications.

Part number 671-6012 is a direct-fit ignition wire set for vehicles such as the Chevrolet S10, GMC Sonoma, and Isuzu Pickup. The Denso 7mm line focuses on OE-style replacement details, making it a practical choice when you need accurate routing, proper terminal engagement, and consistent ignition connection quality.

Key Features

• 7.00 mm insulation outside diameter
• Silicone spark plug boot material for heat resistance and flexibility
• Female spark plug end terminal type
• Female distributor/coil end terminal type
• 180-degree spark plug end boot design for routing clearance
• OE-style fit and performance for factory replacement applications
• Denso 671-6012 ignition wire set identification

Product Details

The Denso 7mm product line is built for drivers who want a replacement ignition wire set that follows original equipment dimensions and connection style. Denso states that First Time Fit wire sets are made to match the factory-installed configuration, with construction that meets or exceeds OE/OES standards. That makes this set a strong match for service work on vehicles including the Chevrolet S10, GMC S15, Pontiac Firebird, and Isuzu Trooper.

This part cross-references NGK IX47 and Bosch 09602 for the same application.

Common Problems This Part Can Address

• Misfires caused by worn or damaged plug wires
• Hard starting related to weak ignition transfer
• Rough idle from poor spark delivery
• Voltage leakage from cracked insulation or aging boots
• Incorrect fitment from non-OE-style wire routing or terminals

Installation Notes and Tips

Verify engine layout and wire routing before removal so each lead returns to the correct cylinder and coil or distributor connection. Confirm the female terminal ends and 180-degree boot orientation match the original setup on your vehicle. For fitment reference, this part fits 1985-1993 Chevrolet S10, 1991-1993 GMC Sonoma, and 1991-1994 Isuzu Pickup, along with other listed Chevrolet, GMC, Pontiac, Buick, and Oldsmobile applications.

Quality Assurance

Denso positions this wire set as an OE-style replacement built to meet or exceed OE/OES standards. The 7mm construction, silicone boot material, and factory-matched design support consistent ignition service across the listed applications, including Chevrolet S10 and Isuzu Pickup models.