Denso 671-8169 Spark Plug Wire Set

Denso 7mm Spark Plug Wire Set for Mercedes-Benz

Denso First Time Fit ignition wire sets are built to match the form, fit, color, and performance of the original factory wire set. This Denso 7mm spark plug wire set, part number 671-8169, is made for Mercedes-Benz V8 applications that require OE-style ignition wire routing and terminal design.

Key Features

• 7mm insulation outside diameter for OE-style fitment
• LR silicone spark plug boot material for heat resistance and durability
• Female spark plug end terminal type
• 180-degree spark plug end boot design
• Female distributor/coil end terminal type
• Built to meet or exceed OE/OES standards in construction

Product Details

The Denso 671-8169 spark plug wire set is part of the Denso First Time Fit line, which focuses on direct replacement ignition components that match original equipment specifications. The 7mm wire diameter, LR silicone boots, and female terminal ends support proper routing and secure connections in Mercedes-Benz ignition systems. This part number 671-8169 is a direct-fit choice for drivers servicing Mercedes-Benz G55 AMG, SL55 AMG, E500, S430, and related models where OE-style ignition wire performance matters.

This part cross-references Bosch 09850 and NAPA Mileage Plus 6718169 for the same application.

Vehicle Fitment

• Fits 2003-2011 Mercedes-Benz G55 AMG, N/A
• Fits 2005-2011 Mercedes-Benz SLK55 AMG, N/A
• Fits 2002-2008 Mercedes-Benz G500, N/A
• Fits 2003-2008 Mercedes-Benz SL55 AMG, N/A
• Fits 2002-2007 Mercedes-Benz ML500, N/A
• Fits 2006-2007 Mercedes-Benz R500, N/A
• Fits 2005-2006 Mercedes-Benz C55 AMG, N/A
• Fits 1998-2006 Mercedes-Benz CL500, N/A
• Fits 2001-2006 Mercedes-Benz CL55 AMG, N/A
• Fits 2003-2006 Mercedes-Benz CLK500, N/A
• Fits 2001-2006 Mercedes-Benz CLK55 AMG, N/A
• Fits 2006 Mercedes-Benz CLS500, N/A
• Fits 2006 Mercedes-Benz CLS55 AMG, N/A
• Fits 2003-2006 Mercedes-Benz E500, N/A
• Fits 2004-2006 Mercedes-Benz E55 AMG, N/A
• Fits 1999-2002 Mercedes-Benz E55 AMG, N/A
• Fits 2000-2006 Mercedes-Benz S430, N/A
• Fits 2001-2006 Mercedes-Benz S55 AMG, N/A
• Fits 1999-2006 Mercedes-Benz SL500, N/A
• Fits 1999-2003 Mercedes-Benz CLK430, N/A
• Fits 2000-2003 Mercedes-Benz ML55 AMG, N/A
• Fits 1998-2002 Mercedes-Benz E430, N/A
• Fits 1999-2001 Mercedes-Benz ML430, N/A
• Fits 1998-2000 Mercedes-Benz C43 AMG, N/A

Common Issues This Part Addresses

• Misfires caused by worn or heat-damaged ignition wires
• Hard starting from weak spark delivery
• Rough idle related to deteriorated wire insulation or terminals
• Intermittent ignition performance from poor boot-to-plug connection
• Voltage leakage from aging 7mm wire insulation

Installation Notes and Tips

Verify engine application and wire routing before installation. Match each lead to the correct cylinder and confirm the female terminal ends and 180-degree spark plug boots seat fully on the plugs and ignition connections. Inspect nearby ignition components for wear so the new wire set is not installed alongside damaged plugs or coils.

Quality Assurance

Denso First Time Fit ignition wire sets are engineered to mirror factory-installed wire sets in form, fit, color, and performance. Construction is specified to meet or exceed OE/OES standards for consistent ignition service on Mercedes-Benz applications.