Denso 3297 Spark Plug

Denso Iridium Long Life Spark Plug 3297

Denso 3297 is an Iridium Long Life spark plug built for OE-level ignition performance, durability, and emissions control. It is a direct-fit choice for a wide range of Toyota, Lexus, Scion, Volvo, Mercedes-Benz, and Pontiac applications, including popular Toyota Camry, Toyota Highlander, and Lexus RX330 platforms.

Key Features

• Iridium center electrode tip for stable spark delivery and long service life
• Platinum chip ground electrode tip design for consistent wear characteristics
• 5000 ohm resistor for ignition noise suppression
• 1.1 mm pre-gap size for OE-style setup
• Copper core center electrode and nickel ground electrode core for heat transfer and durability
• Flat seat, 14 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
• Manufactured to meet strict OE performance, durability, and emissions standards

Product Details

The Denso Iridium Long Life line is engineered for drivers who want OE-style ignition consistency with a durable electrode design. Part number 3297 uses an iridium center electrode tip paired with a platinum chip ground tip to support reliable combustion over extended service intervals. This spark plug is a strong match for many import vehicles that specify a flat-seat, long-reach plug, including Toyota Camry, Toyota Corolla, and Lexus GS430 applications. Denso 3297 is also cross-referenced to DENSO Auto Parts SK20R11 for the same application.

Common Issues This Spark Plug Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire codes related to degraded plug performance
• Reduced fuel economy from weak combustion
• Loss of throttle response in high-mileage ignition systems

Installation Notes and Fitment Tips

• Fits 2010-2012 Lexus HS250h, N/A
• Fits 2009-2012 Toyota Matrix, N/A
• Fits 2003-2006 Toyota Matrix, N/A
• Fits 2008-2011 Scion xB, N/A
• Fits 2002-2011 Toyota Camry, N/A
• Fits 1992-1996 Toyota Camry, N/A
• Fits 2005-2011 Volvo XC90, N/A
• Fits 2002-2010 Lexus SC430, N/A
• Fits 2006-2010 Mercedes-Benz SLK55 AMG, N/A; two spark plugs are required per cylinder
• Fits 2009-2010 Pontiac Vibe, N/A
• Fits 2003-2006 Pontiac Vibe, N/A
• Fits 2005-2010 Scion tC, N/A
• Fits 2009-2010 Toyota Corolla, N/A
• Fits 2005-2006 Toyota Corolla, N/A
• Fits 2001-2010 Toyota Highlander, N/A
• Fits 2007-2010 Volvo S80, N/A
• Fits 2003-2009 Lexus GX470, N/A
• Fits 2003-2009 Toyota 4Runner, N/A
• Fits 2005-2009 Toyota Sequoia, N/A
• Fits 2005-2009 Toyota Tundra, N/A
• Fits 2008-2009 Volvo S60, N/A
• Fits 2006-2008 Lexus RX400h, N/A
• Fits 2001-2008 Toyota RAV4, N/A
• Fits 1996-1997 Toyota RAV4, N/A
• Fits 2002-2008 Toyota Solara, N/A
• Fits 2001-2007 Lexus GS430, N/A
• Fits 1998-2007 Lexus LX470, N/A
• Fits 1998-2007 Toyota Land Cruiser, N/A
• Fits 2006 Chrysler Crossfire, N/A; two spark plugs are required per cylinder
• Fits 2004-2006 Lexus ES330, N/A
• Fits 2001-2006 Lexus LS430, N/A
• Fits 2004-2006 Lexus RX330, N/A
• Fits 2005-2006 Mercedes-Benz C55 AMG, N/A; two spark plugs are required per cylinder
• Fits 2003-2006 Mercedes-Benz CLK55 AMG, N/A; two spark plugs are required per cylinder
• Fits 2004-2006 Suzuki Verona, N/A
• Fits 2001-2006 Toyota Sienna, N/A
• Fits 1992-2005 Toyota Celica, N/A
• Fits 2002-2004 Mercedes-Benz C32 AMG, N/A; two spark plugs are required per cylinder
• Fits 2000-2004 Mercedes-Benz SLK230, N/A
• Fits 2002-2004 Mercedes-Benz SLK32 AMG, N/A; two spark plugs are required per cylinder
• Fits 2000-2004 Toyota Avalon, N/A
• Fits 1995 Toyota Avalon, N/A
• Fits 2002-2003 Lexus ES300, N/A
• Fits 1994-1995 Lexus ES300, N/A
• Fits 1999-2003 Lexus RX300, N/A
• Fits 2002 Mercedes-Benz C230, N/A
• Fits 1998-2000 Lexus GS400, N/A
• Fits 1997-2000 Lexus LS400, N/A
• Fits 1990-1994 Lexus LS400, N/A
• Fits 1992-2000 Lexus SC400, N/A
• Fits 1993-1998 Toyota Supra, N/A
• Fits 1995-1997 Toyota Previa, N/A
• Fits 1992-1995 Toyota MR2, N/A
• Fits 1992-1993 Lexus SC300, N/A

Quality Assurance

Denso manufactures this spark plug to OE performance, durability, and emissions standards, with materials and dimensions selected for factory-style fit and ignition consistency. The Denso 3297 is built for direct replacement use in the listed applications.