APR Z1003100 Iridium Pro Spark Plugs Thread Reach Heat Range - 14mm 26.5mm 9

The APR Z1003100 Iridium Pro Spark Plugs are engineered specifically for high-performance turbocharged and supercharged vehicles, particularly upgraded APR-tuned applications. These premium spark plugs feature an advanced iridium electrode design that delivers superior ignition performance and extended service life compared to standard copper or platinum plugs.

Key Specifications:

• Thread diameter: 14mm
• Thread reach: 26.5mm
• Hex size: 16mm
• Heat range: 9 (colder heat range for high-performance applications)
• Seat type: Gasket
• Non-projected insulator design
• Installation torque: 25 Nm (18.4 lb-ft)

Performance Features:

• Iridium center electrode provides exceptional durability and consistent spark
• Lower required ignition voltage for reliable firing under boost
• Colder heat range (9) prevents pre-ignition in modified engines
• Non-projected design optimized for turbocharged combustion chambers
• Manufactured in the European Union to strict quality standards

These spark plugs are ideal for vehicles running upgraded ECU tuning, increased boost levels, or other performance modifications where OEM spark plugs may not provide adequate performance. The colder heat range helps prevent detonation and pre-ignition in high-output applications.