Fram AI3923 Iridium Ultra Spark Plug

The Fram AI3923 Iridium Ultra is a premium iridium spark plug engineered for superior ignition performance, long service life, and maximum fuel efficiency. Featuring a fine-wire iridium center electrode, this plug delivers a more focused spark for improved combustion consistency across a wide range of engine operating conditions.

Key Features:

• Iridium center electrode – Ultra-fine tip promotes a more concentrated spark for reliable ignition
• Extended service life – Iridium's extreme hardness resists wear, helping maintain performance over high mileage intervals
• Improved fuel efficiency – Optimized combustion reduces fuel waste and supports better throttle response
• Reduced misfires – Consistent spark delivery minimizes cold-start and high-load misfires
• OE-style fitment – Designed to meet or exceed original equipment specifications for a straightforward installation
• Anti-seize coating – Factory-applied coating on threads for easy installation and future removal

The Fram AI3923 Iridium Ultra is a direct-fit replacement spark plug built to restore or exceed the ignition performance of the original equipment plug. It is ideal for drivers seeking a long-lasting, high-performance upgrade over standard copper plugs.