NGK Ruthenium HX FR6AHX-S Spark Plugs (Box of 4) — Fits Acura, Audi, BMW, Honda, Infiniti, Nissan, Porsche, Volvo

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your Engine with NGK Ruthenium HX FR6AHX-S Spark Plugs

The NGK Ruthenium HX FR6AHX-S Spark Plugs (Box of 4) represent the pinnacle of spark plug innovation for modern vehicles. Featuring patented Ruthenium technology, these plugs boast the most advanced tip design, ensuring superior ignitability and an extended service life. Developed from cutting-edge OE technology, these high ignitability spark plugs incorporate specialized OEM DFE and PSPE tip designs for maximum efficiency.

Benefits of Ruthenium HX Technology:

  • Quicker Throttle Response: Experience immediate power delivery and improved acceleration.
  • Smoother Idle: Achieve a more stable and refined engine idle.
  • Better Cold Starts: Ensures reliable and consistent ignition in various temperatures.
  • Exceptional Durability: The Ruthenium center electrode provides industry-leading resistance to wear and tear.
  • More Complete Fuel Burn: Optimizes combustion for enhanced engine efficiency.

These high-performance spark plugs are compatible with a broad range of vehicles, including various Acura Integra (1997-1999), Acura NSX (1997-1999), Audi A8 Quattro (1997-1999), BMW 3-Series (1997-1998), BMW 5-Series (1997-1998), and BMW Z3 (1997-1998) models. Upgrade your ignition system with NGK Ruthenium HX for a significant improvement in your vehicle's overall performance and reliability. Find your perfect fit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2003 Acura CL Type-S
1997-1998 Acura Integra Type R
1997-2001 Acura Integra GS-R
2000 Acura Integra Type R
2007-2009 Acura MDX Base
1997-2001 Acura NSX Base
1997-2003 Acura NSX T
1999 Acura NSX Alex Zanardi Edition
2004-2005 Acura NSX Base
2005-2008 Acura RL Base
2002-2006 Acura RSX Base
2002-2003 Acura TL Type-S
2004-2008 Acura TL Base
2007-2008 Acura TL Type-S
2004-2008 Acura TSX Base
2005 Aston Martin DB9 Base
2005 Aston Martin DB9 Volante
2000-2006 Audi A6 Quattro Base
1997-2003 Audi A8 Quattro Base
2000-2006 Audi A8 Quattro L
2005-2006 Audi A8 Quattro Base
2004-2005 Audi Allroad Quattro Base
2004-2008 Audi S4 Avant
2004-2008 Audi S4 Base
2004-2009 Audi S4 Cabriolet
2002-2003 Audi S6 Avant
2001-2003 Audi S8 Base
1997-1998 BMW 318i Base
1997 BMW 318is Base
1997-1999 BMW 318ti Base
2000 BMW 323Ci Base
1998-2000 BMW 323i Base
1998-1999 BMW 323is Base
2001-2006 BMW 325Ci Base
2001-2005 BMW 325i Base
2001-2005 BMW 325xi Base
2000 BMW 328Ci Base
1997-2000 BMW 328i Base
1997-1999 BMW 328is Base
2001-2006 BMW 330Ci Base
2001-2005 BMW 330i Base
2001-2005 BMW 330xi Base
2001-2005 BMW 525i Base
1997-2000 BMW 528i Base
2001-2005 BMW 530i Base
1998-2003 BMW 540i Base
2004-2005 BMW 545i Base
2006-2010 BMW 550i Base
2004-2005 BMW 645Ci Base
2006-2010 BMW 650i Base
1998-2001 BMW 740i Base
1998-2001 BMW 740iL Base
2002-2005 BMW 745Li Base
2002-2005 BMW 745i Base
2006-2008 BMW 750Li Base
2006-2008 BMW 750i Base
1998-2001 BMW 750iL Base
2003-2008 BMW 760Li Base
2004-2006 BMW 760i Base
1997-1999 BMW M3 Base

…and 326 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your Engine with NGK Ruthenium HX FR6AHX-S Spark Plugs

The NGK Ruthenium HX FR6AHX-S Spark Plugs (Box of 4) represent the pinnacle of spark plug innovation for modern vehicles. Featuring patented Ruthenium technology, these plugs boast the most advanced tip design, ensuring superior ignitability and an extended service life. Developed from cutting-edge OE technology, these high ignitability spark plugs incorporate specialized OEM DFE and PSPE tip designs for maximum efficiency.

Benefits of Ruthenium HX Technology:

  • Quicker Throttle Response: Experience immediate power delivery and improved acceleration.
  • Smoother Idle: Achieve a more stable and refined engine idle.
  • Better Cold Starts: Ensures reliable and consistent ignition in various temperatures.
  • Exceptional Durability: The Ruthenium center electrode provides industry-leading resistance to wear and tear.
  • More Complete Fuel Burn: Optimizes combustion for enhanced engine efficiency.

These high-performance spark plugs are compatible with a broad range of vehicles, including various Acura Integra (1997-1999), Acura NSX (1997-1999), Audi A8 Quattro (1997-1999), BMW 3-Series (1997-1998), BMW 5-Series (1997-1998), and BMW Z3 (1997-1998) models. Upgrade your ignition system with NGK Ruthenium HX for a significant improvement in your vehicle's overall performance and reliability. Find your perfect fit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2003 Acura CL Type-S
1997-1998 Acura Integra Type R
1997-2001 Acura Integra GS-R
2000 Acura Integra Type R
2007-2009 Acura MDX Base
1997-2001 Acura NSX Base
1997-2003 Acura NSX T
1999 Acura NSX Alex Zanardi Edition
2004-2005 Acura NSX Base
2005-2008 Acura RL Base
2002-2006 Acura RSX Base
2002-2003 Acura TL Type-S
2004-2008 Acura TL Base
2007-2008 Acura TL Type-S
2004-2008 Acura TSX Base
2005 Aston Martin DB9 Base
2005 Aston Martin DB9 Volante
2000-2006 Audi A6 Quattro Base
1997-2003 Audi A8 Quattro Base
2000-2006 Audi A8 Quattro L
2005-2006 Audi A8 Quattro Base
2004-2005 Audi Allroad Quattro Base
2004-2008 Audi S4 Avant
2004-2008 Audi S4 Base
2004-2009 Audi S4 Cabriolet
2002-2003 Audi S6 Avant
2001-2003 Audi S8 Base
1997-1998 BMW 318i Base
1997 BMW 318is Base
1997-1999 BMW 318ti Base
2000 BMW 323Ci Base
1998-2000 BMW 323i Base
1998-1999 BMW 323is Base
2001-2006 BMW 325Ci Base
2001-2005 BMW 325i Base
2001-2005 BMW 325xi Base
2000 BMW 328Ci Base
1997-2000 BMW 328i Base
1997-1999 BMW 328is Base
2001-2006 BMW 330Ci Base
2001-2005 BMW 330i Base
2001-2005 BMW 330xi Base
2001-2005 BMW 525i Base
1997-2000 BMW 528i Base
2001-2005 BMW 530i Base
1998-2003 BMW 540i Base
2004-2005 BMW 545i Base
2006-2010 BMW 550i Base
2004-2005 BMW 645Ci Base
2006-2010 BMW 650i Base
1998-2001 BMW 740i Base
1998-2001 BMW 740iL Base
2002-2005 BMW 745Li Base
2002-2005 BMW 745i Base
2006-2008 BMW 750Li Base
2006-2008 BMW 750i Base
1998-2001 BMW 750iL Base
2003-2008 BMW 760Li Base
2004-2006 BMW 760i Base
1997-1999 BMW M3 Base

…and 326 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your Engine with NGK Ruthenium HX FR6AHX-S Spark Plugs

The NGK Ruthenium HX FR6AHX-S Spark Plugs (Box of 4) represent the pinnacle of spark plug innovation for modern vehicles. Featuring patented Ruthenium technology, these plugs boast the most advanced tip design, ensuring superior ignitability and an extended service life. Developed from cutting-edge OE technology, these high ignitability spark plugs incorporate specialized OEM DFE and PSPE tip designs for maximum efficiency.

Benefits of Ruthenium HX Technology:

  • Quicker Throttle Response: Experience immediate power delivery and improved acceleration.
  • Smoother Idle: Achieve a more stable and refined engine idle.
  • Better Cold Starts: Ensures reliable and consistent ignition in various temperatures.
  • Exceptional Durability: The Ruthenium center electrode provides industry-leading resistance to wear and tear.
  • More Complete Fuel Burn: Optimizes combustion for enhanced engine efficiency.

These high-performance spark plugs are compatible with a broad range of vehicles, including various Acura Integra (1997-1999), Acura NSX (1997-1999), Audi A8 Quattro (1997-1999), BMW 3-Series (1997-1998), BMW 5-Series (1997-1998), and BMW Z3 (1997-1998) models. Upgrade your ignition system with NGK Ruthenium HX for a significant improvement in your vehicle's overall performance and reliability. Find your perfect fit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2003 Acura CL Type-S
1997-1998 Acura Integra Type R
1997-2001 Acura Integra GS-R
2000 Acura Integra Type R
2007-2009 Acura MDX Base
1997-2001 Acura NSX Base
1997-2003 Acura NSX T
1999 Acura NSX Alex Zanardi Edition
2004-2005 Acura NSX Base
2005-2008 Acura RL Base
2002-2006 Acura RSX Base
2002-2003 Acura TL Type-S
2004-2008 Acura TL Base
2007-2008 Acura TL Type-S
2004-2008 Acura TSX Base
2005 Aston Martin DB9 Base
2005 Aston Martin DB9 Volante
2000-2006 Audi A6 Quattro Base
1997-2003 Audi A8 Quattro Base
2000-2006 Audi A8 Quattro L
2005-2006 Audi A8 Quattro Base
2004-2005 Audi Allroad Quattro Base
2004-2008 Audi S4 Avant
2004-2008 Audi S4 Base
2004-2009 Audi S4 Cabriolet
2002-2003 Audi S6 Avant
2001-2003 Audi S8 Base
1997-1998 BMW 318i Base
1997 BMW 318is Base
1997-1999 BMW 318ti Base
2000 BMW 323Ci Base
1998-2000 BMW 323i Base
1998-1999 BMW 323is Base
2001-2006 BMW 325Ci Base
2001-2005 BMW 325i Base
2001-2005 BMW 325xi Base
2000 BMW 328Ci Base
1997-2000 BMW 328i Base
1997-1999 BMW 328is Base
2001-2006 BMW 330Ci Base
2001-2005 BMW 330i Base
2001-2005 BMW 330xi Base
2001-2005 BMW 525i Base
1997-2000 BMW 528i Base
2001-2005 BMW 530i Base
1998-2003 BMW 540i Base
2004-2005 BMW 545i Base
2006-2010 BMW 550i Base
2004-2005 BMW 645Ci Base
2006-2010 BMW 650i Base
1998-2001 BMW 740i Base
1998-2001 BMW 740iL Base
2002-2005 BMW 745Li Base
2002-2005 BMW 745i Base
2006-2008 BMW 750Li Base
2006-2008 BMW 750i Base
1998-2001 BMW 750iL Base
2003-2008 BMW 760Li Base
2004-2006 BMW 760i Base
1997-1999 BMW M3 Base

…and 326 additional fitments. Contact us to confirm yours.

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