Denso 5349 Spark Plug

Denso Iridium Power Spark Plug 5349

Denso Iridium Power 5349 is a performance spark plug built for precise ignition and stable combustion in a wide range of GM, Chrysler, Jeep, and other OE applications. It uses a 0.4 mm iridium center electrode, a tapered seat, and a tapered-cut U-groove ground design to support consistent spark delivery.

The Iridium Power line focuses on compact electrode geometry and durable materials for drivers looking for OE-style fitment with a performance-oriented plug design. This part number 5349 is used across applications such as Chevrolet Camaro, Corvette, Silverado 1500, and Cadillac Escalade platforms.

Key Features

• 0.4 mm iridium center electrode for focused spark initiation
• Tapered-cut, U-groove ground electrode tip design
• Copper core center electrode for heat transfer
• Nickel ground electrode core material
• 5000 ohm resistor design
• Pre-gapped at 1.1 mm
• 14 mm thread diameter, 25.00 mm reach, 16 mm hex size
• Tapered seat construction

Detailed Description

Denso 5349 is an Iridium Power spark plug engineered around a small-diameter iridium tip to concentrate ignition energy and support reliable firing under demanding conditions. The tapered-cut U-groove ground electrode design helps expose the spark kernel, while the copper-core center electrode supports thermal control. This combination makes it a direct-fit choice for many OE-style ignition service jobs and performance maintenance intervals.

Compatible With applications including 2021-2023 Chevrolet Camaro, 2014-2017 Chevrolet Corvette, 2014-2017 Chevrolet Silverado 1500, 2015-2017 Cadillac Escalade, and 2022-2023 Cadillac CT5. This part cross-references DENSO Auto Parts ITL16 for the same application.

What It Helps Address

• Misfires caused by worn or eroded spark plug electrodes
• Hard starting from weak ignition output
• Rough idle related to inconsistent spark delivery
• Reduced throttle response from aged ignition components
• Maintenance replacement for OE-style iridium plug applications

Installation Notes and Tips

Verify engine code, plug reach, thread diameter, seat type, and heat range before installation. Confirm the vehicle-specific application notes in the fitment data, including models that require two spark plugs per cylinder. Use the listed pre-gap as a reference and inspect each plug before installation.

• Fits 2022-2023 Cadillac CT5, N/A
• Fits 2023 Cadillac Escalade, N/A
• Fits 2023 Cadillac Escalade ESV, N/A
• Fits 2021-2023 Chevrolet Camaro, N/A
• Fits 2016-2017 Cadillac CTS, N/A
• Fits 2015-2017 Cadillac Escalade, N/A
• Fits 2015-2017 Cadillac Escalade ESV, N/A
• Fits 2016-2017 Chevrolet Camaro, N/A
• Fits 2014-2017 Chevrolet Corvette, N/A
• Fits 2014-2017 Chevrolet Silverado 1500, N/A
• Fits 2015-2017 Chevrolet Tahoe, N/A
• Fits 2014-2017 GMC Sierra 1500, N/A
• Fits 2015-2017 GMC Yukon, N/A
• Fits 2015-2017 GMC Yukon XL, N/A
• Fits 2016 Buick Verano, N/A
• Fits 2013-2014 Buick Verano, N/A
• Fits 2015 Buick Verano, N/A
• Fits 2014 GMC Savana 1500, N/A
• Fits 2011-2013 Buick Regal, N/A
• Fits 2004-2012 Chevrolet Colorado, N/A
• Fits 2007-2012 Chevrolet Malibu, N/A
• Fits 2004-2012 GMC Canyon, N/A
• Fits 2006-2011 Chevrolet HHR, N/A
• Fits 2003-2011 Jeep Wrangler, N/A
• Fits 2006-2010 Chevrolet Cobalt, N/A
• Fits 2001-2010 Chrysler PT Cruiser, N/A
• Fits 2001-2010 Chrysler Town & Country, N/A
• Fits 2001-2010 Dodge Grand Caravan, N/A
• Fits 2006-2010 Hummer H3, N/A
• Fits 2009-2010 Hummer H3T, N/A
• Fits 2006-2010 Pontiac G6, N/A
• Fits 2007-2010 Saturn Sky, N/A
• Fits 2002-2010 Saturn Vue, N/A
• Fits 2009-2010 Volkswagen Routan, N/A
• Fits 2003-2009 Chevrolet Trailblazer, N/A
• Fits 2005-2009 Chrysler 300, N/A
• Fits 2007-2009 Chrysler 300, N/A
• Fits 2004-2009 Chrysler Sebring, N/A
• Fits 2007-2009 Dodge Charger, N/A
• Fits 2003-2009 GMC Envoy, N/A
• Fits 2007-2009 Pontiac G5, N/A
• Fits 2006-2009 Pontiac Solstice, N/A
• Fits 2005-2009 Saab 9-7x, N/A
• Fits 2007-2009 Saturn Aura, N/A
• Fits 2007-2008 Chrysler Aspen, N/A
• Fits 2007-2008 Chrysler Pacifica, N/A
• Fits 2008 Dodge Avenger, N/A
• Fits 2006-2008 Dodge Charger, N/A
• Fits 2004-2008 Dodge Durango, N/A
• Fits 2005-2008 Dodge Magnum, N/A
• Fits 2007-2008 Dodge Magnum, N/A
• Fits 2003-2008 Dodge Ram 1500, N/A
• Fits 2003-2008 Dodge Ram 2500, N/A
• Fits 2003-2008 Dodge Ram 3500, N/A
• Fits 2003-2008 Isuzu Ascender, N/A
• Fits 2007-2008 Isuzu i-290, N/A
• Fits 2007-2008 Isuzu i-370, N/A
• Fits 2007-2008 Jeep Commander, N/A
• Fits 2005-2008 Jeep Grand Cherokee, N/A
• Fits 2004-2007 Buick Rainier, N/A
• Fits 2001-2007 Dodge Caravan, N/A
• Fits 2003-2007 Saturn Ion, N/A
• Fits 2003-2006 Chevrolet Trailblazer EXT, N/A
• Fits 2001-2006 Dodge Stratus, N/A
• Fits 2003-2006 GMC Envoy XL, N/A
• Fits 2006 Isuzu i-280, N/A
• Fits 2006 Isuzu i-350, N/A
• Fits 2006 Jeep Commander, N/A
• Fits 2002-2005 Chevrolet Cavalier, N/A
• Fits 2004-2005 Chevrolet Classic, N/A
• Fits 2003-2005 Dodge Neon, N/A
• Fits 2004-2005 GMC Envoy XUV, N/A
• Fits 2002-2005 Jeep Liberty, N/A
• Fits 2002-2005 Pontiac Grand Am, N/A
• Fits 2002-2005 Pontiac Sunfire, N/A
• Fits 2003-2004 Oldsmobile Bravada, N/A
• Fits 2004 Saturn L300, N/A
• Fits 2001-2003 Chrysler Voyager, N/A
• Fits 2002-2003 Saturn L200, N/A
• Fits 2002-2003 Saturn LW200, N/A
• Fits 1998-2002 Chrysler Intrepid, N/A
• Fits 2002 Saturn L100, N/A
• Fits 1998 Chrysler Concorde, N/A
• Fits 1998 Dodge Intrepid, N/A

Quality Assurance

Denso Iridium Power plugs are built with iridium-tipped electrode construction and OE-style dimensional specifications for direct replacement use in listed applications. Part number 5349 is specified with a 14 mm thread, 25.00 mm reach, 16 mm hex, and tapered seat for application matching.