APR Spark Plugs MQB 14x26.5x16mm

APR Iridium Pro is an excellent upgrade for tuned and high-performance engines. These spark plugs are made from iridium – one of the strongest and most heat-resistant materials used in such applications.

Iridium provides lower operating temperature, better pre-ignition resistance, longer lifespan, and requires lower voltage to create a strong and stable spark. The electrode is stronger and more durable than standard materials, dissipates heat more efficiently, and is better protected against melting, cracking, and other limitations of ordinary spark plugs.

These spark plugs are designed for tuned cars that benefit from a colder heat range than factory. They are an excellent choice for:

• high boost
• high cylinder pressure
• high combustion chamber temperatures
• high power
• operation with fuels such as ethanol

Combines perfectly with APR ignition coils, where applicable.

Key advantages:

• Heat Range 9
  (roughly equivalent to: Bosch 3 / Brisk 10 / Denso 27 / NGK 9)
• Suitable for high performance and tuned applications
• 152% higher melting point than silver
• 125% higher melting point than copper
• 38% higher melting point than platinum
• Stronger than copper and platinum
• Non-projected insulator design
• Requires lower ignition voltage
• Lower operating temperature than OEM spark plugs
• Optimized electrode for more difficult-to-ignite fuels such as ethanol
• Better resistance to pre-ignition compared to standard spark plugs
• Excellent choice for APR tuned cars

Technical specifications:

• Thread reach: 26.5 mm
• Thread diameter: 14 mm
• Hex: 16 mm
• Seat type: Gasket
• Torque: 25 Nm
• Made in EU

⚠️ Sold individually