NGK Iridium IX Spark Plugs BKR8EIX — 6-Pack, Iridium Fine-Wire for 3.0L V6 Audi/Porsche/VW

NGK 2668 BKR8EIX Iridium IX spark plugs are a high-performance six-pack replacement designed to restore crisp ignition, improved throttle response, and long service life for compatible 3.0L V6 Audi, Porsche, and Volkswagen engines.

If your vehicle uses the BKR8EIX specification, these genuine NGK Iridium IX plugs deliver a durable fine-wire center electrode made of iridium and a tapered ground electrode to help maintain stable combustion under demanding driving conditions. Supplied as six plugs per listing, they match OEM fitment dimensions—0.750" reach, 14 mm thread diameter, 5/8" hex—and include crush washers and a factory pre-gap of 0.032" (0.8 mm). Always confirm the part number and compatibility with your owner's manual or dealer before installation.

Which vehicles use the NGK BKR8EIX 2668 plugs?

These NGK Iridium IX plugs are specified for a range of 3.0L V6 applications across Audi, Porsche, and Volkswagen model years listed by the manufacturer. Models include multiple Quattro/A-series Audi sedans and SUVs, Porsche Cayenne and Panamera V6 variants, and the VW Touareg V6.

• Audi: A6, A7, A8, Q5, Q7, S4, S5, SQ5 (3.0L V6; model years vary 2009–2019)
• Porsche: Cayenne and Panamera 3.0L V6 (2011–2018/2012–2016)
• Volkswagen: Touareg 3.0L V6 (2011–2015)

What performance and durability features do these NGK Iridium IX plugs offer?

NGK designed the Iridium IX series with a fine-wire iridium center electrode and a tapered ground tip to maintain reliable spark under higher loads and repeated starts. The material and geometry help resist wear and reduce fouling compared with conventional plugs, aiming for consistent combustion and throttle response.

• Iridium fine-wire center electrode for extended electrode life
• Taper-cut ground electrode for improved ignitability and response
• Ceramic insulator and integrated resistor to reduce electrical interference
• Factory pre-gap (0.032" / 0.8 mm) and included crush washers for correct seating

How do I install and check fitment for the BKR8EIX (2668)?

Installation follows standard spark plug service procedures: verify the part number, confirm thread reach and diameter, clean the plug wells, and torque to the vehicle maker's recommended setting. Use anti-seize only if the vehicle manufacturer permits; these plugs have a flat seat and a crush washer for sealing.

• Verify part: NGK 2668 / BKR8EIX before purchase
• Reach: 0.750" (19.0 mm); Thread: 14.0 mm (0.551")
• Hex size: 5/8" (16 mm); pre-gap: .032" (0.8 mm)
• Torque and installation steps per vehicle service manual

Are there electrical or heat-range details I should know?

These plugs include a built-in resistor to suppress EMI and use a mid-projection iridium center electrode with a manufacturer heat range of 8. The design balances performance and longevity for modern ignition systems and turbocharged/naturally aspirated 3.0L V6 engines that require this specification.

• Resistor-type plug to reduce radio/diagnostic interference
• Manufacturer heat range: 8, ceramic insulator for thermal stability
• Center electrode: iridium tip over copper core for conductivity and strength

Who is this for: NGK 2668 BKR8EIX Iridium IX plugs are intended for owners and technicians working on listed 3.0L V6 Audi, Porsche, and Volkswagen models who want a long‑lasting, performance-minded OEM-equivalent replacement. Choose this six-pack if you need matched plugs for a full bank service, if you prioritize consistent ignition behavior and reduced electrode wear, or if your vehicle’s recommended part number matches NGK BKR8EIX 2668.

Note: This listing supplies six spark plugs. Confirm fitment against your vehicle's VIN or service manual before ordering; contact NGK or your dealer with any application questions.