Toyota Corolla Spark Plug Type
Factory spark plug specifications for the Toyota Corolla. Type, gap, and torque specs per engine from the OEM service manual.
Last updated: 2026-11-01 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
2AZ-FE (1.8L): DENSO SK20R11 or NGK IFR6A11, gap 1.0-1.1 mm (0.0394-0.0433 in). 2ZR-FE (1.8L): Refer to factory ON-VEHICLE INSPECTION page.
| Generation | Years | Top spec |
|---|---|---|
| 2AZ-FE 1.8L | 2009-2013 | DENSO SK20R11 or NGK IFR6A11 |
| 2ZR-FE 1.8L | 2009-2013 | Refer to factory ON-VEHICLE INSPECTION page for specific plug type. |
This vehicle's factory manual
Toyota Corolla: choose your year, then confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Toyota Corolla maintenance schedule
Know the exact spark plug type job for your Toyota Corolla
2AZ-FE (1.8L): DENSO SK20R11 or NGK IFR6A11, gap 1.0-1.1 mm (0.0394-0.0433 in). 2ZR-FE (1.8L): Refer to factory ON-VEHICLE INSPECTION page.
Spark plug type and gap depend on the exact engine. Confirm the engine code before buying plugs or setting the gap. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
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2AZ-FE 1.8L
- →Iridium-tipped plugs. Either DENSO or NGK is acceptable.
2ZR-FE 1.8L
Parts and supplies
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Toyota Corolla Spark Plugs Plugs
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Spark Plugs — Manual's Parts List
Exact plugs, exact torque, no stripped threads.
- 1Spark PlugsShop →
DENSO SK20R11 or NGK IFR6A11 — buy the full set, not one at a time
- 2Torque Wrench (3/8")Shop →
Use the torque specified for your engine and spark plugs
- 3Spark Plug SocketShop →
Magnetic or rubber insert — protects the ceramic
- 4Dielectric GreaseShop →
On the boot — prevents misfires from moisture
Get everything at once
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One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Iridium Spark Plugs
Long-lasting performance plugs for modern engines.
Spark Plug Socket
Magnetic or rubber-insert socket to prevent damage.
Gap Gauge
Ensure your plugs are set to the exact factory spec.
Torque Wrench
Crucial for tightening plugs without stripping threads.
Anti-Seize Lubricant
Prevents plugs from welding to the cylinder head.
Dielectric Grease
Protects ignition boots and connectors from moisture.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Toyota Corolla so the job is ready when the parts arrive.
Frequently Asked Questions
- What spark plugs does a Toyota Corolla use?
- The 2AZ-FE engine uses DENSO SK20R11 or NGK IFR6A11 with a gap of 1.0-1.1 mm. Both are iridium-tipped and interchangeable.
- What spark plug type does a Toyota Corolla use?
- 2AZ-FE (1.8L): DENSO SK20R11 or NGK IFR6A11, gap 1.0-1.1 mm (0.0394-0.0433 in). 2ZR-FE (1.8L): Refer to factory ON-VEHICLE INSPECTION page.
- What is the spark plug gap for a Toyota Corolla?
- 1.0-1.1 mm (0.0394-0.0433 in) (2009-2013)
- How often to replace spark plugs on a Toyota Corolla?
- Factory service manuals typically recommend spark plug replacement every 30,000–100,000 miles depending on plug material (copper, platinum, or iridium). Check your maintenance schedule for the exact interval.
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Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-11-01