⚡Spark Plug Type
Scion iM Spark Plug Type
Find the correct spark plug type, gap size, and replacement interval for your Scion iM. Covers all model years with torque specs.
Quick Answer
The Scion iM 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.
2016-2016
2016-2016Spark Plug TypeIridium (long-life)
Plug Gap0.039" - 0.043" (1.0 - 1.1mm)
Replacement Interval60,000 - 100,000 miles
Torque Spec15 - 22 ft-lbs (check manual)
Quantity4 (inline-4) or 6 (V6)
Notes
- →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
Frequently Asked Questions
- What spark plugs does a Scion iM use?
- The Scion iM 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 iM?
- Modern Scion iM 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 iM?
- Most Scion iM 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 iM?
- 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.
Scion iM Repair Guides
More Scion iM Guides
Browse all Spark Plug Type pages →🔋Scion iM Battery Location❄️Scion iM Coolant Type🧪Scion iM Fluid Capacities💡Scion iM Headlight Bulb Size🛢️Scion iM Oil Type & Capacity⚙️Scion iM Serpentine Belt⚡Toyota 4Runner Spark Plug Type⚡Toyota Avalon Spark Plug Type⚡Toyota Camry Spark Plug Type⚡Toyota Celica Spark Plug Type⚡Toyota Corolla Spark Plug Type⚡Toyota Echo Spark Plug Type⚡Toyota Highlander Spark Plug Type⚡Toyota Land Cruiser Spark Plug Type⚡Toyota Matrix Spark Plug Type