Denso 671-6311 Direct Ignition Coil Boot Kit

Denso Direct Ignition Coil Boot Kit

Denso 671-6311 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 a clean OE-style replacement on select Lexus and Toyota applications.

The Denso First Time Fit COP boot set line is focused on exact replacement details for coil-on-plug systems. For drivers servicing Lexus ES350, RX350, RX450h, or Toyota Avalon, Camry, Highlander, Sienna, Venza, and RAV4 ignition systems, this part number 671-6311 follows OE/OES standards in construction and fitment.

Key Features

• Direct Ignition Coil Boot Kit for coil-on-plug ignition service
• Silicone boot material for heat-resistant electrical insulation
• Black boot color for OE-style appearance
• Female terminal design with 1 terminal
• Length: 059.00
• Built to match factory-installed boot form and performance
• Part number: 671-6311

Detailed Description

Denso 671-6311 is engineered as a direct replacement boot kit for ignition coil service where the original boot has worn, cracked, or lost its sealing ability. The First Time Fit COP boot set is made to mirror the original boot’s shape, fit, color, and operating characteristics, helping maintain consistent ignition connection quality across the coil-on-plug assembly. This part number 671-6311 is a practical OE-style choice for Lexus ES350 and RX350, as well as Toyota Avalon, Camry, Highlander, Sienna, Venza, and RAV4 models within the listed years.

This part cross-references Beck/Arnley 175-1070 and Belden 702518 for the same application.

What It Helps Address

• Cracked or heat-aged ignition coil boots
• Loss of insulation at the coil-to-spark plug connection
• Misfire conditions related to worn boot sealing
• Hard starting caused by degraded ignition transfer
• Intermittent ignition performance on coil-on-plug systems

Installation Notes and Tips

Verify the vehicle’s year, make, and model against the listed fitment before ordering. This boot kit is listed for 2005-2015 Toyota Avalon, 2007-2015 Toyota Camry, 2008-2015 Toyota Highlander, 2007-2015 Toyota Sienna, 2009-2015 Toyota Venza, 2006-2012 Toyota RAV4, 2007-2015 Lexus ES350, 2007-2015 Lexus RX350, and 2010-2015 Lexus RX450h. Inspect the ignition coil, plug well, and surrounding seals during service so the replacement boot seats cleanly and maintains proper electrical isolation.

Quality Assurance

Denso states that the First Time Fit COP boot set is built to meet or exceed OE/OES standards in construction. That OE-focused approach supports consistent fit and performance for factory-style ignition repairs.