Denso 671-6186 Spark Plug Wire Set

Denso 671-6186 Ignition Wire Set

This Denso spark plug wire set is built for direct replacement on select Toyota Land Cruiser applications. It follows the factory-style form, fit, color, and performance expected from an OE-style ignition wire set, with 8mm insulation and silicone spark plug boots for dependable ignition routing.

Compatible with 1981-1987 Toyota Land Cruiser, this Denso 671-6186 wire set is a practical choice when you need a replacement that matches original equipment dimensions and terminal style. It is also a fitment-based search match for Toyota Land Cruiser 8mm spark plug wire set replacement needs.

Key Features

• OE-style replacement ignition wire set for select Toyota Land Cruiser models
• 8.00 mm outside diameter insulation
• Silicone spark plug boot material for heat resistance and flexibility
• 115-degree spark plug end boot angle for routing clearance
• Female spark plug end terminal type
• Male distributor coil end terminal type
• Built to meet or exceed OE/OES standards in construction

Product Details

Denso First Time Fit ignition wire sets are engineered to mirror the original factory-installed wire set in form, fit, color, and performance. For Toyota Land Cruiser owners searching for a direct-fit ignition wire set, part number 671-6186 provides the correct 8mm wire diameter and OE-style terminal configuration for consistent spark delivery and clean routing through the engine bay. This part cross-references ACDelco 906K and NGK TZ38 for the same application.

Common Issues This Part Helps Address

• Misfires caused by worn or deteriorated plug wires
• Hard starting related to weak ignition transfer
• Rough idle from damaged insulation or poor terminal contact
• Voltage leakage from cracked or heat-aged wire boots
• Routing problems when original wire angles no longer hold position

Installation Notes and Tips

Verify cylinder routing before removal so each lead returns to the correct ignition location. Inspect distributor and spark plug terminals for corrosion, carbon tracking, or looseness before installing the new set. Confirm the 115-degree boot orientation and terminal style match the vehicle’s original layout on your Toyota Land Cruiser application.

Quality Assurance

Denso positions this First Time Fit wire set as an OE-style replacement built to meet or exceed OE/OES standards for construction and performance. That makes part number 671-6186 a solid option for restoring ignition wire integrity on 1981-1987 Toyota Land Cruiser models.