DENSO 3421 IRIDIUM LONG LIFE SPARK PLUG - 4pcs; Pre-Set Gap: 0.044"
OEM / Interchange Numbers: 12120032138, 12120037663, 12122158253, 12293PHMA01, 12565996, 12788884, 224015M016, 22401AA580, 22401CK81B, 22401EA016, 22401ZH016, 306503790, 306508430, 307138590, 307518050, 307518060, 312161830, 32010632, 55564748, 9091901191, 9091901235, 90919A1002, MN158596, SK20HR11
Iridium Long-Life Spark Plug (3421) by Denso. Iridium Long Life Plug -Iridium Alloy Plug (90% Ir) with Platinum Ground Strap. Denso's Iridium alloy is more durable than even Platinum, allowing the center electrode to be shrunk to only 0.7 mm in diameter. This produces a dramatic improvement in ignitability and spark plug life.
- LIFESPAN / DURABILITY - Iridium alloy is 6X harder and 8X stronger than Platinum
- Iridium with Rhodium Center Electrode -- DENSO uses the highest concentration of Iridium of any spark plug and outperforms in the most severe engine temperatures, resisting oxidation and voltage wear for over 100,000 miles.
- Platinum Ground Electrode -- extends the life of the plug by resisting gap erosion.
- 360-Degree Laser Welding -- creates the highest quality bond for structural support of the center electrode.
PERFORMANCE / IGNITABILITY- 0.7 mm Fine Wire Iridium Center Electrode -- improves ignitability for more horsepower, faster easier starts and fewer misfires under heavy loads.
Vehicle Fitment:
2003-2013 Toyota 4Runner; 2007-2013 Toyota FJ Cruiser; 2008-2017 Toyota Land Cruiser; 2008-2017 Toyota Sequoia; 2005-2015 Toyota Tacoma 2005-2017 Toyota Tundra; 2008-2013 Volvo C30; 2004-2011 Volvo S40; 2004-2009 Volvo S60; 2007-2010 Volvo S80; 2005-2011 Volvo V50 2003-2010 Volvo V70; 2010 Volvo XC 60; 2009-2010 Volvo XC 70; 2007-2010 Volvo XC 90; 2008-2013 BMW 128I; 2006 BMW 325I; 2006 BMW 325XI 2007-2013 BMW 328I; 2007-2013 BMW 328XI; 2006 BMW 330I; 2006 BMW 330XI; 2006-2007 BMW 525I; 2006-2007 BMW 525XI; 2008-2011 BMW 528I 2008-2011 BMW 528XI; 2006-2007 BMW 530I; 2006-2007 BMW 530XI; 2007-2012 BMW X3; 2007-2010 BMW X5; 2006-2011 BMW Z4; 2006 Honda Civic 2000-2006 Infiniti FX 35; 2005 Infiniti QX 56; 2010-2016 Lexus GX 460; 2008-2016 Lexus LX 570; 2003 Mercedes Benz E55 AMG 2005-2011 Mercedes Benz G55 AMG; 2003-2006 Mercedes Benz S55 AMG; 2003-2008 Mercedes Benz SL55 AMG; 2005-2009 Mercedes Benz SLR Mclaren 2004-2012 Mitsubishi Eclipse; 2004-2011 Mitsubishi Galant; 2004-2006 Mitsubishi Lancer;2004-2006 Mitsubishi Outlander; 2007 Nissan Maxima 2011-2016 Porsche 911; 2006-2009 SAAB 9-3; 2010-2011 SAAB 9-5 |
| DENSO 3421 Specifications |
|---|
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Gap Size | 1.1 (MM) |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Platinum Chip |
| Hex Size | 16.0 (MM) |
| Manufacturer Heat Range | 20 |
| Reach | 26.50 (MM) |
| Resistance | 5000 (oh) |
| Seat Type | Flat |
| Thread Diameter | 14.00 (MM) |
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