2026-09-15
Lexus IS 250/350 Spark Plug Replacement – 6 Iridium Plugs Malaysia
The IS 250 and IS 350 V6 engines (2GR-FSE/2GR-FE) require 6 iridium spark plugs (NGK or Denso) every 100,000 km. Parts cost; labour. The front bank is straightforward but the rear bank requires partial intake removal — factor in the extra labour time. The IS 300h 4-cylinder uses 4 plugs at total.
IS Spark Plug Specs
- IS 250 2GR-FSE V6: NGK ILFR6B iridium — 6 plugs — every 60,000 km
- IS 350 2GR-FE V6: NGK ILFR6B iridium — 6 plugs — every 60,000 km
- IS 300h 2AR-FXE hybrid: NGK ILFR5B iridium — 4 plugs — every 60,000 km
- Use OEM-equivalent iridium only — copper plugs shorten interval to 20,000 km