NGK V-Power Plug 7397

The NGK V-Power Plug 7397 (TR5IX) is a premium iridium spark plug engineered for precise ignition and extended service intervals across a wide range of automotive engines. With iridium electrode technology, this 14mm threaded plug delivers consistent spark performance and reduced wear compared to conventional spark plugs, making it a top choice for drivers seeking reliable engine efficiency and cold-start capability.

This NGK spark plug features a 0.708-inch reach and tapered seat design that ensures proper seating and thermal management in compatible engine blocks. The integrated resistor element suppresses radio frequency interference, protecting vehicle electronics while maintaining stable combustion across varying load conditions. Iridium's superior melting point and durability mean longer electrode life, typically 25,000 to 100,000 miles depending on engine type and driving conditions—significantly outperforming standard nickel-alloy alternatives.

The NGK V-Power Plug 7397 is specified for vehicles where precise OEM spark plug replacement is required. This plug supports reliable starting in cold climates, maintains stable idle quality, and reduces fouling in stop-and-go traffic. Whether you're performing routine maintenance, restoring engine performance, or preparing for extended service intervals, this iridium plug provides the electrode precision and longevity modern engines demand. NGK's strict manufacturing tolerances ensure each plug meets original equipment specifications for fit, gap, and thermal range.

Always verify fitment against your vehicle's service manual or consult a technician to confirm this plug is correct for your application. Proper installation gap and correct threading type are critical to performance and engine safety.