Overview
The OE: 90919-01233 spark plug is designed for Toyota Yaris gasoline models using the 1.5-liter engine platform.
It supports stable ignition performance required for modern fuel injection systems.
This spark plug helps maintain consistent combustion, smooth acceleration, and reliable engine response.
Its specification follows Toyota factory standards for daily driving and long service intervals.
Compatibility
This spark plug fits Toyota Yaris vehicles equipped with:
Typical production coverage includes 2005–2018 model years, depending on regional configurations. This spark plug OE is commonly used across Toyota small-displacement petrol platforms, including Yaris and regionally branded equivalents such as Vios.
The same engine platform is widely used across Asia, the Middle East, Africa, Latin America, and Europe.
This makes the spark plug suitable for diverse driving environments and fuel qualities.
Its thread size, reach, and heat range match original Toyota specifications.
Direct installation is supported without modification.
Material / Mechanical Design
The spark plug features a precision-machined metal shell designed for secure seating in the cylinder head.
Its exterior construction supports durability under high operating temperatures.
The metal shell provides corrosion resistance during extended service intervals.
The ceramic insulator geometry matches Toyota OE design requirements.
This construction supports stable performance throughout the recommended lifespan.
Ignition Stability & Engine Performance
Stable ignition supports smooth idling and predictable throttle response.
Consistent spark delivery helps maintain efficient combustion during urban driving.
The spark plug supports reliable cold starts and steady operation at cruising speeds.
Accurate ignition timing contributes to balanced engine output and consistent performance.
This is essential for high-mileage Yaris applications.
Interchangeable OE Numbers (Cross-Reference)
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90919-01240
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90919-01249
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Denso SK16HR11
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NGK IFR5A11
Maintenance Replacement (Official Interval)
Toyota recommends replacing iridium spark plugs at 90,000–100,000 km under normal driving conditions.
Shorter intervals may be suitable in regions with frequent stop-and-go traffic.
Routine inspection during scheduled maintenance is advised.
