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NGK Ruthenium HX Spark Plug Box of 4 (FR6AHX-S)

Experience the best in class spark plug for modern vehicles with NGK's Ruthenium HX technology. Patented and designed for high ignitability, these spark plugs deliver industry-leading durability and performance.

  • Patented Ruthenium technology for highest performance and life expectancy
  • Advanced OE technology for high ignitability
  • Quick throttle response, smoother idle, and better cold starts
  • Recommended for modern vehicles using OE DFE type spark plugs

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

Make Model Year Type
Acura CL 2001 Type-S
Acura CL 2002 Type-S
Acura CL 2003 Type-S
Acura Integra 1997 GS-R
Acura Integra 1997 Type R
Acura Integra 1998 GS-R
Acura Integra 1998 Type R
Acura Integra 1999 GS-R
Acura Integra 2000 GS-R
Acura Integra 2000 Type R
Acura Integra 2001 GS-R
Acura MDX 2007 Base
Acura MDX 2008 Base
Acura MDX 2009 Base
Acura NSX 1997 Base
Acura NSX 1997 T
Acura NSX 1998 Base
Acura NSX 1998 T
Acura NSX 1999 Alex Zanardi Edition
Acura NSX 1999 Base
Acura NSX 1999 T
Acura NSX 2000 Base
Acura NSX 2000 T
Acura NSX 2001 Base
Acura NSX 2001 T
Acura NSX 2002 T
Acura NSX 2003 T
Acura NSX 2004 Base
Acura NSX 2005 Base
Acura RL 2005 Base
Acura RL 2006 Base
Acura RL 2007 Base
Acura RL 2008 Base
Acura RSX 2002 Base
Acura RSX 2003 Base
Acura RSX 2004 Base
Acura RSX 2005 Base
Acura RSX 2006 Base
Acura TL 2002 Type-S
Acura TL 2003 Type-S
Acura TL 2004 Base
Acura TL 2005 Base
Acura TL 2006 Base
Acura TL 2007 Base
Acura TL 2007 Type-S
Acura TL 2008 Base
Acura TL 2008 Type-S
Acura TSX 2004 Base
Acura TSX 2005 Base
Acura TSX 2006 Base
Acura TSX 2007 Base
Acura TSX 2008 Base
Aston Martin DB9 2005 Base
Aston Martin DB9 2005 Volante
Audi A6 Quattro 2000 Base
Audi A6 Quattro 2001 Base
Audi A6 Quattro 2002 Base
Audi A6 Quattro 2003 Base
Audi A6 Quattro 2004 Base
Audi A6 Quattro 2005 Base
Audi A6 Quattro 2006 Base
Audi A8 Quattro 1997 Base
Audi A8 Quattro 1998 Base
Audi A8 Quattro 1999 Base
Audi A8 Quattro 2000 Base
Audi A8 Quattro 2000 L
Audi A8 Quattro 2001 Base
Audi A8 Quattro 2001 L
Audi A8 Quattro 2002 Base
Audi A8 Quattro 2002 L
Audi A8 Quattro 2003 Base
Audi A8 Quattro 2003 L
Audi A8 Quattro 2004 L
Audi A8 Quattro 2005 Base
Audi A8 Quattro 2005 L
Audi A8 Quattro 2006 Base
Audi A8 Quattro 2006 L
Audi Allroad Quattro 2004 Base
Audi Allroad Quattro 2005 Base
Audi S4 2004 Avant
Audi S4 2004 Base
Audi S4 2004 Cabriolet
Audi S4 2005 Avant
Audi S4 2005 Base
Audi S4 2005 Cabriolet
Audi S4 2006 Avant
Audi S4 2006 Base
Audi S4 2006 Cabriolet
Audi S4 2007 Avant
Audi S4 2007 Base
Audi S4 2007 Cabriolet
Audi S4 2008 Avant
Audi S4 2008 Base
Audi S4 2008 Cabriolet
Audi S4 2009 Cabriolet
Audi S6 2002 Avant
Audi S6 2003 Avant
Audi S8 2001 Base
Audi S8 2002 Base
Audi S8 2003 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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