⚡Spark Plug Type
Eagle Medallion Spark Plug Type
Find the correct spark plug type, gap size, and replacement interval for your Eagle Medallion. Covers all model years with torque specs.
Quick Answer
The Eagle Medallion 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.
1988-1989
1988-1989Spark Plug TypeCopper or Platinum
Plug Gap0.028" - 0.044" (0.7 - 1.1mm)
Replacement Interval30,000 miles
Torque Spec13 - 18 ft-lbs
Quantity4-8 (varies by engine)
Notes
- →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)
Frequently Asked Questions
- What spark plugs does a Eagle Medallion use?
- The Eagle Medallion 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 Eagle Medallion?
- Modern Eagle Medallion 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 Eagle Medallion?
- Most Eagle Medallion 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 Eagle Medallion?
- 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.
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