The Toyota GT86 uses a 2.0-liter FA20D engine, and OEM-recommended spark plugs for this model family are NGK LKR7A-11 or Denso SK20R11, both iridium plugs commonly used with the FA20D. Either option is suitable when installed to factory specs.
The GT86 (also sold as the Toyota 86 and, in the U.S., Scion FR-S) shares its engine lineage with the Subaru BRZ. Spark plug choice can vary by model year and regional specification, and official guidance is to use iridium plugs with the correct heat range for direct-injection operation. When replacing, maintain proper electrode gap (around 0.039 inches / 1.0 mm) and follow the vehicle’s torque specs to ensure reliable ignition and performance. This article outlines the commonly used OEM-equivalent options and what to consider when choosing plugs for the GT86.
Spark plug options for GT86
Below are the two widely used OEM-equivalent spark plug options that are compatible with the FA20D engine found in the GT86 family. These options are favored by maintenance manuals and enthusiasts for reliability and performance.
- NGK LKR7A-11 Iridium IX spark plug
- Denso SK20R11 Iridium spark plug
Both NGK LKR7A-11 and Denso SK20R11 are designed to suit the FA20D’s direct-injection setup and share a common aim: durable, heat-range-appropriate ignition performance. It’s important to verify the exact part number for your specific market and model year, as regional variations or updated revisions may exist.
Model-year and regional variations
The GT86/FR-S/BRZ lineup uses the FA20D engine, which requires spark plugs chosen for direct-injection operation. In contrast, the GR86 (the successor introduced in 2021/2022) uses a different engine family (FA24D) with its own recommended plugs. If you own a GR86 or another FA24D-powered model, always consult the latest official specs for that engine, as plug part numbers and heat ranges can differ from the FA20D guidance above.
Replacement basics
When replacing plugs on the FA20D, use the correct heat range and iridium life-type plugs, verify the gap (~0.039 inches / 1.0 mm), and follow OEM torque specifications. If you are not confident in performing the job, have a professional mechanic handle the replacement to avoid cross-threading or improper seating.
Summary
For the GT86’s 2.0-liter FA20D engine, the commonly recommended spark plugs are NGK LKR7A-11 and Denso SK20R11. These iridium plugs are designed to work with direct-injection engines and should be gapped to about 0.039 inches (1.0 mm). Always confirm the exact part number for your model year and region, and note that newer GR86/FA24D models use different plug specifications. Regular replacement at manufacturer-recommended intervals helps maintain ignition performance and engine reliability.
What OEM spark plugs does Toyota use?
Genuine Toyota Iridium OEM Spark Plug Denso SK16HR11 - Toyota (90919-01233)
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What brand of spark plug does Toyota recommend?
Discover why NGK or Denso spark plugs are the best choice for your Toyota. Learn how proper selection improves performance and reliability.
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What's better, iridium or ruthenium?
For most drivers, iridium strikes a great balance between cost and performance. Ruthenium is ideal for those seeking the best in efficiency and durability.
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What is the spark plug interval for gt86?
Every 30,000-60,000 miles
Spark Plugs
Interval: Every 30,000-60,000 miles or as recommended by your turbo/supercharger kit. Tips: Forced induction often requires colder spark plugs to prevent pre-detonation under boost. Using iridium or high-performance plugs can improve reliability.
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