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NGK Iridium IX Spark Plug Box of 4 (CR6HIX)

Take your vehicle's performance to the next level with the NGK Iridium IX Spark Plug Box of 4. Designed for the performance enthusiast, these spark plugs offer outstanding acceleration, high fuel efficiency, and durability.

With their tapered cut ground electrode, these plugs provide improved starting, idling, and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum, making them perfect for today's engines.

  • Extreme ignitability and exceptional anti-fouling
  • Tapered cut ground electrode for improved starting, idling, and throttle response
  • Iridium fine wire center electrode's durability is six times harder than platinum

This product fits more vehicles than loaded. Please select your vehicle to see all fits.

Make Model Year Type
Aston Martin DB2 1950 Base
Aston Martin DB2 1950 Base
Aston Martin DB2 1950 Base
Aston Martin DB2 1950 Base
Aston Martin DB2 1950 Vantage
Aston Martin DB2 1951 Vantage
Aston Martin DB2 1952 Vantage
Aston Martin DB2 1953 Vantage
Aston Martin DB2-4 1953 MK I
Aston Martin DB2-4 1953 MK I
Aston Martin DB2-4 1953 MK I
Aston Martin DB3 1951 Base
Aston Martin DB3 1951 Base
Honda C70M 1971 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CB250 Nighthawk 1991 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CMX250C Rebel 1985 Base
Honda CRF100F 2012 Base
Honda CRF100F 2013 Base
Honda CRF50F 2004 Base
Honda CRF50F 2005 Base
Honda CRF50F 2006 Base
Honda CRF50F 2007 Base
Honda CRF50F 2008 Base
Honda CRF50F 2009 Base
Honda CRF50F 2011 Base
Honda CRF50F 2017 Base
Honda CRF50F 2018 Base
Honda CRF50F 2019 Base
Honda CRF50F 2020 Base
Honda CRF70F 2004 Base
Honda CRF70F 2005 Base
Honda CRF70F 2006 Base
Honda CRF70F 2007 Base
Honda CRF70F 2008 Base
Honda CRF70F 2009 Base
Honda CRF70F 2011 Base
Honda CRF70F 2012 Base
Honda CRF80F 2012 Base
Honda CRF80F 2013 Base
Honda CT70 1991 Base
Honda CT70 1992 Base
Honda CT70 1993 Base
Honda CT70 1994 Base
Honda PC50 1970 Base
Honda XR100R 2000 Base
Honda XR100R 2001 Base
Honda XR100R 2002 Base
Honda XR100R 2003 Base
Honda XR50R 2000 Base
Honda XR50R 2001 Base
Honda XR50R 2002 Base
Honda XR50R 2003 Base
Honda XR70R 1997 Base
Honda XR70R 1998 Base
Honda XR70R 1999 Base
Honda XR70R 2000 Base
Honda XR70R 2001 Base
Honda XR70R 2002 Base
Honda XR70R 2003 Base
Honda Z50A 1972 Base
Honda Z50A 1972 Base
Honda Z50A 1972 Base
Honda Z50A 1972 Base
Honda Z50A 1972 Base
Honda Z50A 1972 Base
Honda Z50A 1972 Base
Honda Z50R 1982 Base
Honda Z50R 1983 Base
Honda Z50R 1984 Base
Honda Z50R 1985 Base
Honda Z50R 1986 Base
NGK manufactures spark plugs and spark plug wires, as well as glow plugs for diesel applications. Their range of spark plugs cover everything from OEM replacement to Ultimate Performance plugs, and are available as traditional copper, platinum, or iridium tips. NGK’s reputation as an OEM supplier for many car manufacturers makes them a top choice for spark plugs. Few brands can make that claim and have the quality to back it up.
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