Parts for your 2006 Toyota Land cruiser-Spark plugs

2006 Toyota Land Cruiser spark plugs: petrol V8 uses them, diesel doesn’t

Checking the technical references for the 2006 Toyota Land Cruiser sold in Australia and New Zealand shows two main engine families. The petrol 4.7‑litre V8 (engine code 2UZ‑FE) runs iridium spark plugs, while the 4.2‑litre turbo‑diesel (engine code 1HD‑FTE) doesn’t use spark plugs at all, relying on compression ignition and glow plugs for cold starts. This split is backed by Toyota’s 2006 Land Cruiser owner’s and repair manuals for the 100 Series, Toyota’s electronic parts catalogue, and the NGK/Denso plug catalogues that list iridium plugs for the 2UZ‑FE and none for the 1HD‑FTE.

For the petrol‑powered 2006 Land Cruiser, spark plugs do the heavy lifting every time the key’s turned. They ignite the air–fuel mix, keep cold starts tidy, help the big V8 pull smoothly, and keep fuel use in check. Toyota specifies long‑life iridium plugs for the 2UZ‑FE, which are designed to go the distance before performance drops off. In normal Aussie and Kiwi driving, reputable schedules put plug replacement at roughly every 100,000 km (or around the six‑year mark), though heavy towing, dusty trips, or lots of short runs can bring that forward. Genuine‑spec options include Denso SK20R11 or NGK equivalents commonly listed for the 2UZ‑FE