NGK - Ruthenium HX Spark Plug FR6AHX-S - 94279

The NGK Ruthenium HX FR6AHX-S spark plug delivers advanced ignition performance for modern BMW engines. Engineered with NGK’s patented Ruthenium HX technology, this plug combines exceptional ignitability, durability, and fuel efficiency. Its Double Fine Electrode (DFE) design provides a more complete fuel burn, resulting in smoother idling, faster starts, and improved throttle response. With superior resistance to wear, corrosion, and heat, this Ruthenium plug offers long-lasting reliability and consistent performance under demanding conditions. Ideal as a direct replacement or performance upgrade for OE DFE-style spark plugs, it’s built to match or exceed original equipment standards.

Features:

• High ignitability double fine electrode design: Combines 0.6 mm ruthenium center with opposed fine wire platinum ground electrode
• Ruthenium alloy center electrode: NGK's patented ruthenium technology produces maximum performance, ignitability, and durability at high temperatures
• Platinum pin type ground electrode: Provides more complete fuel burn, quicker throttle response, smoother idle, and better cold starts
• Solid copper core: 98% pure copper core offers superior heat dissipation, conductivity, and ultra-wide heat ranges
• Trivalent metal plating: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
• Recommended usage: Modern vehicles using OE DFE-type spark plugs or for those seeking an aftermarket plug with the latest OE technology

Specs:

• Material Grade: Ruthenium
• Part Number: FR6AHX-S
• Service Number: FR6AHX-S
• Short Style Spark Plug: No
• Stock Number: 94279
• Ground Electrode Core Material: Nickel
• Washer(s) Included: Yes
• Grade Type: Performance
• Electrical Terminal Type: Non-Removable Nut
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Ruthenium
• Seat Type: Flat
• Insulator Material: Ceramic
• Resistor Type: Yes
• Ground Electrode Tip Material: Platinum
• Skirt: No
• Center Electrode Design: Fine Wire
• Washer Type: Crush
• Center Electrode Projection: Mid Projection

Fitment:

• BMW
  • 318i (1997–1999)
  • 318is (1997–1999)
  • 318ti (1997–1999)
  • 320i (2001–2005)
  • 323Ci (2000)
  • 323i (1998–2000)
  • 323is (1998–1999)
  • 325Ci (2001–2006)
  • 325i (2001–2005)
  • 325xi (2001–2005)
  • 328Ci (2000)
  • 328i (1997–2000)
  • 328is (1997–1999)
  • 330Ci (2001–2006)
  • 330i (2001–2005)
  • 330xi (2001–2005)
  • 525i (2001–2005)
  • 528i (1997–2000)
  • 530i (2001–2005)
  • 540i (1998–2003)
  • 545i (2004–2005)
  • 550i (2006–2010)
  • 645Ci (2004–2005)
  • 650i (2006–2010)
  • 740i (1998–2001)
  • 740iL (1998–2001)
  • 745Li (2002–2005)
  • 745i (2002–2005)
  • 750Li (2006–2008)
  • 750i (2006–2008)
  • 750iL (1998–2001)
  • 760Li (2003–2008)
  • 760i (2004–2006)
  • M3 (1997–1999)
  • M5 (2000–2003)
  • X3 (2004–2006)
  • X5 (2000–2010)
  • Z3 (1997–2002)
  • Z4 (2003–2005)
  • Z8 (2000–2003)
  • E46 chassis applications