NGK 90216 Spark Plug

Performance Iridium Spark Plug

The NGK Iridium IX Spark Plug 90216 is built for drivers who want precise ignition response and durable service in modern engines. It is a fitment-based replacement for a wide range of Lexus and Toyota applications, including Lexus ES350, Lexus RX350, and Toyota Camry models.

Key Features

• Iridium fine-wire center electrode for strong ignitability and consistent spark.
• Hybrid dual fine electrode design for improved starting, idle quality, and throttle response.
• Multi-ground electrode construction with a flat seat and resistor design.
• Ceramic insulator and iridium tip materials for high-temperature durability.
• Part number 90216 for easy identification during service and ordering.

Detailed Description

NGK Iridium IX Spark Plug 90216 uses a fine-wire iridium center electrode, nickel ground electrode tips, and a multi-ground configuration to support stable combustion performance. The performance-grade design is aimed at engines that benefit from quick ignition response, dependable anti-fouling characteristics, and efficient operation. This spark plug is listed for applications such as Fits 2019-2025 Lexus ES350, N/A; Fits 2018-2025 Lexus IS300, N/A; and Fits 2018-2024 Toyota Camry, N/A. It also cross-references Anchor 3491 for the same application.

For shoppers comparing Lexus ES350 spark plugs or Toyota Camry spark plugs, 90216 provides a direct service option with the specified 0.032 inch gap noted in the fitment data. The Iridium IX line is positioned as NGK's performance-focused spark plug family, with materials and electrode geometry selected to support reliable ignition under demanding operating conditions. Part number 90216 is also identified by service number HB6BIX-PA.

What It Is Used For

• Replacing worn spark plugs that cause rough idle.
• Restoring throttle response when ignition performance drops.
• Addressing hard starting linked to plug wear or fouling.
• Supporting efficient combustion in compatible Lexus and Toyota engines.
• Maintaining consistent spark delivery during routine tune-up service.

Installation Notes and Tips

Verify engine application, gap specification, and seat type before installation. The fitment data lists a 0.032 inch gap for the covered applications. Use the correct torque procedure for flat-seat spark plugs and confirm the electrical terminal style matches the ignition lead or coil connection. Always compare the old plug to part number 90216 before installation.

Quality Assurance

NGK describes Iridium IX as a performance spark plug line engineered with iridium metallurgy for durability and dependable ignition characteristics. Part number 90216 is supported by NGK interchange data and application-specific fitment coverage for Lexus and Toyota models.