8 Pack NGK Iridium IX Spark Plugs 1998-2002 for Pontiac Firebird 5.7L V8 ps

The NGK Iridium IX 7397 Spark Plug (TR5IX) features a fine-wire iridium center electrode for superior ignition precision, improved throttle response, and long-lasting durability. Designed for high-performance street and off-road applications.

Features & Benefits:

🔧 Iridium tip enhances durability and spark strength
🔧 Tapered ground electrode improves flame propagation
🔧 Trivalent plating resists corrosion and seizing
🔧 Engineered to reduce fouling under tough conditions

Specifications:

Brand & Part Number: NGK 7397 TR5IX
Material: Iridium
Thread Size: 14mm
Reach: 19mm (0.75 in.)
Hex Size: 5/8 in. (16mm)
Seat Type: Gasket
Resistor: Yes
Gap: 0.044 in. (1.1mm)

Upgrade to NGK Iridium IX for peak performance, cleaner combustion, and lasting ignition power—buy now!