NGK Iridium IX Performance Spark Plugs (1984-95 4Runner/Pickup)

NGK Iridium IX Performance Spark Plugs For 1984–1995 Toyota Pickup & 1984–1995 Toyota 4Runner Overview The NGK Iridium IX Spark Plugs are a premium high-performance spark plug upgrade designed for 1984–1995 Toyota 4Runner and 1984–1995 Toyota Pickup models. Engineered for improved ignition efficiency, throttle response, and long-term durability, Iridium IX plugs are an excellent upgrade over traditional OE nickel alloy spark plugs. Built specifically for performance enthusiasts and modified vehicles, NGK Iridium IX spark plugs provide stronger spark energy, improved combustion efficiency, and outstanding resistance to fouling under demanding driving conditions. Featuring a fine-wire iridium center electrode and tapered ground electrode design, these spark plugs help improve starting performance, idle quality, fuel efficiency, and overall engine responsiveness. Improved Ignition Performance NGK Iridium IX spark plugs are engineered to provide a more efficient and stable spark compared to conventional spark plugs. Performance benefits include: Improved throttle response Faster engine starting Smoother idle quality Enhanced acceleration More consistent combustion efficiency Improved fuel efficiency Reliable spark under demanding driving conditions These characteristics make Iridium IX plugs ideal for daily drivers, modified engines, off-road vehicles, and performance-oriented builds. Advanced Iridium Construction At the center of each NGK Iridium IX plug is a fine-wire iridium center electrode engineered for durability and consistent spark performance. Construction features include: Fine-wire iridium center electrode Tapered cut ground electrode design Trivalent metal plating for corrosion resistance Anti-seize and anti-corrosion coating Exceptional resistance to spark fouling Designed for long service life Iridium is significantly harder and more heat resistant than traditional platinum materials, allowing the plug to maintain consistent ignition performance over extended use. Built for Performance Applications Iridium IX spark plugs are specifically designed for drivers seeking improved ignition performance beyond standard OE replacement spark plugs. Recommended applications include: Modified engines High-performance street vehicles Off-road and overland builds Daily driving Restoration projects Upgraded ignition systems For drivers seeking even greater ignition performance and longevity, NGK also offers their premium Ruthenium HX spark plug line. Durability & Reliability NGK spark plugs are known worldwide for long-term reliability and precision manufacturing quality. Durability benefits include: Excellent anti-fouling resistance Reliable spark performance over time Long-lasting iridium electrode durability Stable operation under varying engine temperatures Consistent ignition performance in daily driving and harsh environments These spark plugs are designed to deliver dependable performance in both stock and modified Toyota engines. Pre-Gapped for Installation These spark plugs arrive pre-gapped from NGK for the intended application. However, it is still recommended to verify spark plug gap before installation, especially on modified engines or performance applications. Ideal Applications Daily driving Performance street builds Modified Toyota trucks and SUVs Off-road and overland vehicles Restoration projects Improved ignition performance upgrades Vehicle Compatibility 1984–1989 Toyota 1st Gen 4Runner 1984–1988 Toyota 2nd Gen Toyota Pickup 1990-1995 2nd Toyota 4Runner 1989-1995 3rd Gen Toyota Pickup Fitment Notes Verify engine application before purchase Compatible with factory ignition systems Designed as an upgrade over standard OE nickel spark plugs Gap adjustment may be required depending on engine setup What Is Included (4) NGK Iridium IX Spark Plugs