Denso 671-6291 Direct Ignition Coil Boot Kit

Denso 671-6291 Ignition Coil Boot Kit

Denso 671-6291 is a direct ignition coil boot kit built to match factory-installed boot form, fit, color, and performance. It uses silicone boot material and a black finish for OE-style service on Ford, Lincoln, Mazda, and Mercury applications.

The Denso First Time Fit COP boot line is engineered to meet or exceed OE/OES standards in construction and performance. For buyers searching for a Ford F-150 ignition coil boot kit, Lincoln MKZ coil boot replacement, or Mazda CX-9 direct ignition coil boot kit, this part number provides a direct-fit service solution.

Key Features

• Direct ignition coil boot kit for coil-on-plug service
• Silicone boot material for heat-resistant electrical insulation
• Black boot color matches factory-style appearance
• Male/female terminal design with 1 terminal
• OE-style form and fit for direct replacement service
• Part number 671-6291 for catalog and fitment lookup

Product Details

Denso 671-6291 is part of the 6 Boots product line and is built for vehicles that use coil-on-plug ignition systems. The boot set is shaped to match the original equipment design, helping maintain proper coil-to-spark plug connection and consistent ignition performance. This makes it a practical choice for Ford Edge, Ford Explorer, Lincoln MKX, and Mazda 6 ignition service where the original boot has worn, cracked, or lost insulation quality.

Because the boot construction follows OE/OES standards, it supports a factory-style repair approach without changing the original ignition layout. The part number 671-6291 is commonly searched for direct ignition coil boot replacement on 2007-2015 Ford and Lincoln platforms, as well as select Mazda and Mercury applications.

Vehicle Fitment

• Fits 2007-2015 Ford Edge, N/A
• Fits 2015 Ford Expedition, N/A
• Fits 2011-2015 Ford Explorer, N/A
• Fits 2011-2015 Ford F-150, N/A
• Fits 2009-2015 Ford Flex, N/A
• Fits 2011-2015 Ford Mustang, N/A
• Fits 2008-2015 Ford Taurus, N/A
• Fits 2015 Ford Transit-150, N/A
• Fits 2015 Ford Transit-250, N/A
• Fits 2015 Ford Transit-350, N/A
• Fits 2015 Ford Transit-350 HD, N/A
• Fits 2009-2015 Lincoln MKS, N/A
• Fits 2010-2015 Lincoln MKT, N/A
• Fits 2007-2015 Lincoln MKX, N/A
• Fits 2007-2015 Lincoln MKZ, N/A
• Fits 2015 Lincoln Navigator, N/A
• Fits 2007-2015 Mazda CX-9, N/A
• Fits 2009-2013 Mazda 6, N/A
• Fits 2010-2012 Ford Fusion, N/A
• Fits 2008-2009 Ford Taurus X, N/A
• Fits 2008-2009 Mercury Sable, N/A

Common Repair Uses

• Cracked or heat-damaged ignition coil boots
• Misfire concerns caused by poor coil-to-plug contact
• Electrical leakage from worn silicone insulation
• Rough idle or intermittent ignition performance issues
• Factory-style replacement during ignition system service

Installation Notes

Verify the vehicle year, make, model, and ignition system configuration before installation. Inspect the coil, spark plug, and surrounding ignition components for wear or contamination before installing the new boot. Clean mating surfaces and confirm the boot seats fully on the coil and spark plug for proper connection.

For Ford F-150, Ford Explorer, and Lincoln MKZ applications, compare the original boot shape and terminal style to confirm the correct replacement before service. Use the part number 671-6291 when matching catalog listings and vehicle fitment.

Quality Assurance

Denso First Time Fit COP boot sets are built to OE/OES standards for form, fit, color, and performance. This product line is designed as a factory-style replacement option for direct ignition coil boot service.