Scion xB Spark Plug Type
Find the correct spark plug type, gap size, and replacement interval for your Scion xB. Covers all model years with torque specs.
Scion xB Spark Plug Type
The Scion xB 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.
2010-2015
Representative 2010 manual branch for 2010-2015
Service Precautions
tC L4-2.4L (2AZ-FE)
Repair and Diagnosis: Service Precautions — 2010 Scion tC L4-2.4L (2AZ-FE) Service Manual | Operation CHARM Operation CHARM : Car repair manuals for everyone. Home >> Scion >> 2010 >>...
Open factory section →Service Precautions
xD L4-1.8L (2ZR-FE)
Repair and Diagnosis: Service Precautions — 2010 Scion xD L4-1.8L (2ZR-FE) Service Manual | Operation CHARM Operation CHARM : Car repair manuals for everyone. Home >> Scion >> 2010 >>...
Open factory section →2010-2015
2010-2015- →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
2004-2009
2004-2009- →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 Scion xB use?
- The Scion xB 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 Scion xB?
- Modern Scion xB 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 Scion xB?
- Most Scion xB 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 Scion xB?
- 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.