Upgrade to a fine-wire iridium spark with the NGK Iridium IX spark plug BKR5EIX-11, a performance-grade plug NGK designs for the performance enthusiast. It is cataloged for 330 listed applications, including the 1990-1992 Chevrolet Corvette (V8-5.7L), 1996-2004 Acura RL (V6-3.5L), 1998-2008 Toyota Corolla (L4-1.8L), 2001-2005 Honda GL1800 Gold Wing and 2009-2014 Honda TRX420FA Rancher AT. See the Buyer's Guide tab for the full list.
NGK builds the Iridium IX line for strong ignitability and resistance to fouling. NGK recommends it for modified or high-performance applications, or as an upgrade from OE nickel alloy spark plugs.
Specifications: M14 - 1.25 metric thread, 19.0 mm (0.750 in) reach, flat seat with a crush washer included, J-gap ground configuration and a 1.1 mm (0.044 in) pre-gap. It has a manufacturer heat range of 5 and a mid-projection center electrode with a 3.5 mm (0.14 in) insulator tip projection. Other details: 5,000-ohm resistor, non-removable terminal nut and ceramic insulator. The ground electrode is nickel. The center electrode has a copper core and an iridium tip. Country of origin: United States.
The number of plugs needed varies by application, from one on many listed Honda powersports models to 12 on the 2004-2008 Chrysler Crossfire (V6-3.2L). Signs a spark plug may need replacing include misfires, rough idle, hard starting and reduced fuel economy. These symptoms can have other causes, so diagnose the problem before replacing parts.
What gap does this NGK spark plug come set to?
It comes pre-gapped at 1.1 mm (0.044 in) with a J-gap ground configuration. Check your vehicle's service information for the specified gap before installing.
Is this a Toyota Corolla spark plug?
It is cataloged for the 1998-2008 Toyota Corolla (L4-1.8L) and the 2012 Toyota Corolla (L4-2.4L), with four per engine. See the Buyer's Guide tab for other listed vehicles.
How do NGK iridium spark plugs compare with nickel plugs?
This plug has a 0.6 mm fine-wire iridium center tip with a very high melting point. NGK recommends it as an upgrade to OE nickel alloy plugs or for modified and high-performance applications.
Is a crush washer included?
Yes. The plug has a flat seat and comes with a crush washer. It also has a non-removable terminal nut.
How many plugs does my engine need?
It varies from one to 12 by application. For example, the 1996-2004 Acura RL (V6-3.5L) lists six and the 2004-2008 Chrysler Crossfire (V6-3.2L) lists 12. Check the Buyer's Guide tab for your vehicle.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
