NGK 90288 Spark Plug

NGK Laser Iridium Spark Plug 90288

NGK 90288 is a Laser Iridium High Ignitability spark plug built for Mazda applications that call for precise ignition performance and OE-style service intervals. It combines an iridium center electrode tip, nickel ground electrode, and a 0.030 in pre-gap for consistent spark delivery in modern engines.

The Laser Iridium High Ignitability line is positioned for vehicles that require stable combustion control and factory-level ignition characteristics. For Mazda 3, CX-30, CX-5, CX-50, CX-9, and Mazda 6 applications, this plug supports direct replacement service where the original equipment specification calls for a high-ignitability design.

Key Features

• NGK spark plug, part number 90288
• Laser Iridium High Ignitability design for OE-style ignition performance
• Iridium center electrode tip with copper core for efficient spark transfer
• Nickel ground electrode with standard configuration
• Resistor type plug with 5,000 ohm resistance
• Flat seat design, 14 mm hex, 26.5 mm reach
• Pre-gapped at 0.030 in
• Manufacturer heat range 7

Detailed Description

NGK 90288 is engineered as a direct ignition service part for Mazda engines that specify a Laser Iridium High Ignitability spark plug. The iridium center electrode tip helps maintain stable firing characteristics, while the copper core supports heat transfer and the nickel ground electrode provides a durable contact surface. This combination is suited to modern engine management systems that depend on consistent spark quality for smooth operation.

Compatible With Mazda 3, Mazda 3 Sport, Mazda CX-30, Mazda CX-5, Mazda CX-50, Mazda CX-9, and Mazda 6 applications listed below. This part cross-references PY8V-18-110 for the same application. The NGK 90288 part number is also identified as DILKAR7M8 in the manufacturer data.

What It Helps Address

• Rough idle caused by worn or inconsistent spark plugs
• Hard starting from weakened ignition output
• Misfire conditions related to plug wear or gap drift
• Reduced throttle response from degraded combustion efficiency
• Service replacement needs at the factory recommended interval

Installation Notes and Tips

• Verify engine application by year, make, and model before installation.
• Confirm the plug gap matches the specified 0.030 in requirement for the application.
• Inspect ignition coils and plug wells during service to avoid repeat misfire concerns.
• Use the correct torque procedure for the flat seat design to help prevent thread or sealing issues.
• Check the vehicle service schedule, as several listed Mazda applications note a 40,000-mile factory recommended service interval.

Quality Assurance

NGK is a major OE spark plug supplier in North America with long-standing manufacturing experience across automotive applications. The brand’s OE-focused production and distribution network support consistent part specification and application coverage for Mazda ignition service.

• Fits 2021-2024 Mazda 3, N/A
• Fits 2021-2024 Mazda 3 Sport, N/A
• Fits 2021-2024 Mazda CX-30, N/A
• Fits 2021-2024 Mazda CX-5, N/A
• Fits 2023-2024 Mazda CX-50, N/A
• Fits 2021-2023 Mazda CX-9, N/A
• Fits 2021 Mazda 6, N/A
• Fits 2018-2020 Mazda 6, N/A
• Fits 2019-2020 Mazda CX-5, N/A
• Fits 2017-2020 Mazda CX-9, N/A
• Fits 2016 Mazda CX-9, N/A