NGK R6725-105 Racing Spark Plug with 14 mm Thread and 21.5 mm Reach

The NGK R6725-105 racing spark plug is designed for high-performance applications, featuring a 14 mm threaded core and a reach of 21.5 mm to ensure optimal combustion efficiency. Constructed with a gasket seat, this spark plug provides a secure fit and reliable ignition performance. Equipped with a resistor, it helps minimize electromagnetic interference, ensuring stable engine operation. Suitable for various performance vehicles, this plug is engineered for durability and consistent spark delivery.

Features:

• Thread Size: 14 mm for secure mounting and compatibility

• Reach: 21.5 mm to ensure proper electrode positioning

• Gasket Seat: Provides a tight seal to prevent gas leakage

• Resistor: Reduces electromagnetic interference for stable operation

• Stock Number: 3857 for easy identification and replacement