NGK Laser Platinum Spark Plugs BKR6EQUP — 6-Pack for Select Audi/BMW/Porsche/VW/Volvo, 2.5mm Platinum Tip & 5 kΩ Resistor

NGK 3199 Laser Platinum spark plugs (BKR6EQUP) are high-quality, OEM-grade platinum plugs sold as a 6-pack designed to restore ignition reliability in compatible Audi, BMW, Porsche, VW, Volvo, Cadillac and select other models.

These NGK laser platinum plugs use a projected 2.5 mm platinum center electrode and a semi-surface nickel ground electrode to deliver consistent spark performance and extended service life compared with conventional copper plugs. Built with a 14 mm shell, 19 mm reach and a 0.020" (0.5 mm) gap, they match factory specifications for dozens of late-1990s and early-2000s European and American vehicles. Each plug includes an internal 5 kΩ resistor to suppress radio-frequency interference.

Which vehicles will these NGK 3199 plugs fit?

These plugs are intended for a range of Audi, BMW, Porsche, Volkswagen, Volvo, Cadillac and other models from the mid-1990s to mid-2000s. Always verify engine displacement and OEM part compatibility before ordering to ensure a correct fit.

• Audi: A4 (1997, 1999–2001), A4 Quattro (1998–2001), A6 and A6 Quattro (1998–2001)
• BMW: common fits include 320i, 323i/323Ci/323is, 325i/325Ci/325xi, 328i/328Ci/328is, 330i/330Ci/330xi, 525i, 528i, 530i, M3, Z3 and Z4 variants (see engine year ranges)
• Porsche: 911 (2001–2002, 2005 GT3/Carrera) and Boxster models (2001–2004)
• Other: VW Passat 2.8L (1998–2005), Volvo S80/S90/960/V90 ranges, Cadillac CTS (2003–2004), Saturn Vue (2002–2003)

How do these spark plugs improve ignition performance?

The laser-welded platinum tip provides a stable, long-lasting spark that resists erosion better than standard copper tips. That stability helps maintain consistent combustion characteristics and can reduce misfires as service intervals extend.

• Projected 2.5 mm platinum center electrode for long-term gap retention
• 5 kΩ resistor to limit electrical noise and protect ignition systems
• ISO overall height and factory-standard gap (.020") for direct replacement
• Resilient nickel ground electrode designed for reliable spark transfer

What are the key specifications and installation notes?

These plugs have a 14 mm shell thread diameter with a 1.25 mm pitch and a 19 mm reach (3/4"). Use the specified torque and confirm seat type before installation. They are supplied in a quantity of six per listing.

• Thread: 14 mm × 1.25 mm; reach: 19 mm (gasket seat)
• Hex size: 5/8" (16 mm); torque cast iron: 18–25.3 lb·ft, aluminum: 18–21.6 lb·ft
• Factory gap: 0.020" (0.5 mm); projected electrode style
• Quantity: 6 spark plugs per package—confirm engine cylinder count before purchase

Who should consider these plugs? NGK 3199 BKR6EQUP spark plugs are suited to vehicle owners and technicians replacing worn original equipment plugs on the specified Audi, BMW, Porsche, VW, Volvo and other compatible models. If you need a plug that follows OEM dimensions, offers improved electrode longevity through a platinum center, and includes a noise-suppressing resistor, this 6-pack is a practical service replacement. Always cross-check your vehicle’s engine code, cylinder count and OEM part number to confirm compatibility before installation. For performance-focused modifications or nonlisted engines, consult vehicle-specific resources or a professional installer prior to purchase.