Toyota Highlander Spark Plug Type
Find the correct spark plug type, gap size, and replacement interval for your Toyota Highlander. Covers all model years with torque specs.
Toyota Highlander Spark Plug Type
The Toyota Highlander typically uses iridium or platinum spark plugs. Newer models (2010+) use long-life iridium plugs rated for 60,000-100,000 miles. Check below for your specific year.
Spark plug type and gap depend on the exact engine. Confirm the engine code before buying plugs or setting the gap.
Exact Vehicle Check
Use the archive navigator when you need the exact engine, trim, or production-branch manual instead of a broad year-range summary.
2013-2018
Representative 2013 manual branch for 2013-2018
Service Precautions
Corolla L4-1.8L (2ZR-FE)
Repair and Diagnosis: Service Precautions — 2013 Toyota Corolla L4-1.8L (2ZR-FE) Service Manual | Operation CHARM Operation CHARM : Car repair manuals for everyone. Home >> Toyota >> 2...
Open factory section →Service Precautions
Corolla L4-2.4L (2AZ-FE)
Repair and Diagnosis: Service Precautions — 2013 Toyota Corolla L4-2.4L (2AZ-FE) Service Manual | Operation CHARM Operation CHARM : Car repair manuals for everyone. Home >> Toyota >> 2...
Open factory section →2019-2024
2019-2024- →Iridium plugs last longer but cost more — do NOT re-gap iridium plugs
- →Use a torque wrench — over-tightened plugs can strip aluminum heads
- →Apply a thin coat of anti-seize to threads (unless plug is pre-coated)
- →Use a spark plug socket with rubber insert to avoid cracking the ceramic insulator
2013-2018
2013-2018- →Iridium plugs last longer but cost more — do NOT re-gap iridium plugs
- →Use a torque wrench — over-tightened plugs can strip aluminum heads
- →Apply a thin coat of anti-seize to threads (unless plug is pre-coated)
- →Use a spark plug socket with rubber insert to avoid cracking the ceramic insulator
2007-2012
2007-2012- →Iridium plugs last longer but cost more — do NOT re-gap iridium plugs
- →Use a torque wrench — over-tightened plugs can strip aluminum heads
- →Apply a thin coat of anti-seize to threads (unless plug is pre-coated)
- →Use a spark plug socket with rubber insert to avoid cracking the ceramic insulator
2001-2006
2001-2006- →Use a torque wrench — over-tightened plugs can strip aluminum heads
- →Apply a thin coat of anti-seize to threads (unless plug is pre-coated)
- →Use a spark plug socket with rubber insert to avoid cracking the ceramic insulator
Frequently Asked Questions
- What spark plugs does a Toyota Highlander use?
- The Toyota Highlander spark plug type varies by year and engine. Newer models (2010+) typically use iridium plugs for longer service life. Older models may use platinum or copper. Check the specs below for your exact year.
- How often should I change spark plugs on a Toyota Highlander?
- Modern Toyota Highlander models with iridium plugs can go 60,000-100,000 miles between changes. Older models with copper plugs need replacement every 30,000 miles. Replace sooner if you notice misfires, rough idle, or poor fuel economy.
- What is the spark plug gap for a Toyota Highlander?
- Most Toyota Highlander models use a spark plug gap between 0.039" and 0.044" (1.0-1.1mm). Pre-gapped plugs from the OEM are recommended. Do not re-gap iridium-tip plugs as it can damage the electrode.
- Can I upgrade to iridium spark plugs in my Toyota Highlander?
- Yes, upgrading from copper or platinum to iridium is generally safe and beneficial. Iridium plugs offer better ignitability, longer life, and improved fuel economy. Just match the correct heat range and gap for your engine.