2026-09-15
Lexus GX 460 Spark Plug Replacement – 8 Iridium Plugs V8 Malaysia
The 1UR-FE V8 requires 8 iridium spark plugs (Denso SK20R11) every 100,000 km. Right bank plugs require removing the intake manifold — significant labour Total Skipping this service causes progressive misfires and rich running that damages the catalytic converters.
GX 460 Spark Plug Specs
- 1GR-FE 4.0L V6: NGK ILFR6B iridium — 6 plugs — every 100,000 km
- Naturally aspirated V6 — iridium plugs last longer than turbo applications
- Inspect at 80,000 km; replace at 100,000 km regardless of condition