Denso 671-8161 Spark Plug Wire Set

Denso 7mm Spark Plug Wire Set

Denso 671-8161 is a 7mm spark plug wire set built to match factory-installed form, fit, color, and performance. It uses silicone spark plug boot material and OE-style terminal configurations for direct replacement service on supported Buick, Chevrolet, Cadillac, GMC, Hummer, Pontiac, Saab, and Isuzu applications.

The Denso First Time Fit line focuses on OE-style replacement parts for drivers who want the original routing, connection style, and performance characteristics restored without changing the vehicle’s ignition layout.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire replacement
• Silicone spark plug boot material for heat resistance and flexible routing
• 90-degree spark plug end boot design for tight engine bay routing
• Female spark plug end terminal type and female distributor/coil end terminal type
• Built to meet or exceed OE/OES standards for construction and performance
• Direct replacement for vehicles such as Chevrolet Impala, Silverado 1500, Tahoe, GMC Sierra 1500, and Cadillac Escalade
• Part number 671-8161 for catalog and fitment lookup

Product Details

Denso 671-8161 is engineered as an OE-style ignition wire set for vehicles that require a 7mm wire diameter and factory-matched connection geometry. The silicone boots help maintain secure terminal contact while supporting routing around heat and engine components. This makes it a practical replacement for ignition service on 2005-2009 Buick Allure, 2006-2009 Chevrolet Impala, 2007-2008 Chevrolet Silverado 1500, 2007-2008 GMC Yukon, and other listed applications. If you are searching for a Denso 7mm spark plug wire set for Chevrolet Impala or a replacement ignition wire set for GMC Sierra 1500, this part number is the correct reference to verify.

This part cross-references ACDelco 748RR and Autolite 97093 for the same application.

Common Problems This Part Can Address

• Misfires caused by worn or heat-damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from deteriorated wire insulation or boot sealing
• Intermittent ignition performance from loose or aging terminal connections
• Voltage leakage from cracked or brittle wire jackets

Installation Notes and Tips

Verify engine application by year, make, and model before ordering. Match the wire routing to the original layout and confirm each female terminal seats fully at the spark plug and coil or distributor end. Inspect nearby ignition components, including plugs and coil connections, before installation so the new wire set is not paired with worn parts that can affect performance.

Quality Assurance

Denso First Time Fit ignition wire sets are built to OE-style specifications and are described by the manufacturer as matching factory-installed form, fit, color, and performance. Construction is stated to meet or exceed OE/OES standards.

Compatible Vehicles

• Fits 2008-2009 Buick Allure, N/A
• Fits 2006-2009 Chevrolet Impala, N/A
• Fits 2009 Hummer H3T, N/A
• Fits 2005-2009 Saab 9-7x, N/A
• Fits 2008 Buick LaCrosse, N/A
• Fits 2007-2008 Cadillac Escalade, N/A
• Fits 2007-2008 Chevrolet Avalanche, N/A
• Fits 2005-2008 Chevrolet Corvette, N/A
• Fits 2008 Chevrolet Express 1500, N/A
• Fits 2008 Chevrolet Express 2500, N/A
• Fits 2008 Chevrolet Express 3500, N/A
• Fits 2007-2008 Chevrolet Silverado 1500, N/A
• Fits 2007-2008 Chevrolet Silverado 2500 HD, N/A
• Fits 2008 Chevrolet Silverado 3500 HD, N/A
• Fits 2007-2008 Chevrolet Suburban 1500, N/A
• Fits 2007-2008 Chevrolet Suburban 2500, N/A
• Fits 2007-2008 Chevrolet Tahoe, N/A
• Fits 2006-2008 Chevrolet Trailblazer, N/A
• Fits 2005-2008 GMC Envoy, N/A
• Fits 2008 GMC Savana 1500, N/A
• Fits 2008 GMC Savana 2500, N/A
• Fits 2008 GMC Savana 3500, N/A
• Fits 2007-2008 GMC Sierra 1500, N/A
• Fits 2007-2008 GMC Sierra 2500 HD, N/A
• Fits 2008 GMC Sierra 3500 HD, N/A
• Fits 2007-2008 GMC Yukon, N/A
• Fits 2007-2008 GMC Yukon XL 1500, N/A
• Fits 2007-2008 GMC Yukon XL 2500, N/A
• Fits 2008 Hummer H2, N/A
• Fits 2008 Hummer H3, N/A
• Fits 2008 Pontiac G8, N/A
• Fits 2005-2008 Pontiac Grand Prix, N/A
• Fits 2005-2007 Buick Rainier, N/A
• Fits 2006-2007 Cadillac CTS, N/A
• Fits 2007 Cadillac Escalade ESV, N/A
• Fits 2007 Cadillac Escalade EXT, N/A
• Fits 2006-2007 Chevrolet Monte Carlo, N/A
• Fits 2005-2006 Chevrolet SSR, N/A
• Fits 2006 GMC Envoy XL, N/A
• Fits 2005-2006 Isuzu Ascender, N/A
• Fits 2005-2006 Pontiac GTO, N/A
• Fits 2005 Chevrolet Trailblazer EXT, N/A