2026-10-08 · 5 min read
Mitsubishi Eclipse Cross Spark Plug Replacement Malaysia
The 4B40 1.5T MIVEC engine uses iridium spark plugs with a recommended replacement interval of 60,000 km. NGK or Denso iridium equivalents are commonly used in Malaysia and perform well in turbocharged applications. Worn spark plugs on a turbocharged engine cause misfires, power loss, and can trigger boost-related fault codes. Do not substitute copper plugs as the gap and heat range are optimised for iridium on this engine.
Eclipse Cross Spark Plugs
- 1.5T 4B40 turbo: use NGK iridium laser plugs — service at 100,000 km
- Iridium plugs are critical for turbo engine — correct electrode gap maintains ignition timing under boost pressure
- Never use copper plugs in a turbocharged engine — premature wear and misfires under boost