Parts for your 2007 Toyota Land cruiser-Spark plugs

2007 Toyota Land Cruiser Spark Plugs

For the 2007 Toyota Land Cruiser, spark plugs are relevant on petrol models but not on diesels. Technical sources such as Toyota workshop manuals for UZJ100/UZJ200, Toyota scheduled maintenance guides, and Denso/NGK application catalogues confirm that the 4.7L petrol V8 (2UZ-FE) runs eight spark plugs with coil-on-plug ignition, while the diesel engines (1HD-FTE in late 100 Series and 1VD-FTV in early 200 Series) use compression ignition with glow plugs instead of spark plugs. The advice below applies to petrol V8 variants.

On the 2UZ-FE petrol V8, spark plugs do the heavy lifting to ignite the air–fuel mix, keeping the big Cruiser running smooth and dependable whether it’s towing, touring, or tackling corrugations. Iridium-tipped plugs (commonly specified for this engine, e.g., Denso SK20R11 or equivalent NGK) offer strong spark energy, durability, and stable idle. Toyota’s maintenance guidance and leading plug makers generally place these plugs on a long-life service interval — typically in the 100,000 to 160,000 kilometre range depending on conditions and plug type. Many AU/NZ schedules land around the 100,000 km mark for inspection/replacement.

As part of routine servicing on a 2007 Land Cruiser petrol V8, it’s smart to check plug condition and the coil boots under the bonnet. Fine-wire iridium tips are pre-gapped by the manufacturer (usually around 1.1 mm) and shouldn’t be forced open or closed, as that can damage the precious-metal tip. If removal is on the cards, work on a cool engine, blow debris out of the plug wells before loosening, and install new plugs by hand first to avoid cross-threading. Torque them to the specification on the plug maker’s data sheet or Toyota’s manual, most modern plated threads don’t need anti-seize. A light smear of dielectric grease on the inside of the coil boots helps future removal and seals out moisture.

Pushing plugs too far past their service life can show up as hard starting, rough idle, misfires under load, higher fuel use, and even premature coil failures. In worst cases, persistent misfire can upset the catalytic converters. If the vehicle sees lots of towing, dusty outback tracks, or short-trip cold starts, consider bringing the inspection interval forward. Keeping quality, correct-heat-range iridium plugs in the 2UZ-FE pays off in smooth running, good economy, and the kind of reliability Land Cruiser owners expect across Australia and New Zealand.

• Use quality iridium plugs matched to the 2UZ-FE heat range and reach.
• Inspect around 100,000 km, replace if worn, fouled, or past service life.
• Check coil boots for cracking, replace boots or coils if suspect.

How many spark plugs does a 2007 Land Cruiser have?

Petrol V8 models (2UZ-FE) have eight spark plugs, one per cylinder with coil-on-plug ignition. Diesel models (1HD-FTE or 1VD-FTV) don’t use spark plugs at all, they rely on compression ignition and glow plugs for cold starts.

What spark plug type should be fitted to the 2UZ-FE?

Iridium plugs are typically specified for this engine, such as Denso SK20R11 or an equivalent NGK part. They’re pre-gapped by the manufacturer (about 1.1 mm) and are designed to last for long intervals. Avoid re-gapping fine-wire iridium unless the maker explicitly allows it.

When should spark plugs be replaced on a 2007 petrol Land Cruiser?

Plan on inspection around 100,000 kilometres and replacement between 100,000 and 160,000 kilometres depending on condition, usage, and the specific plug used. Heavy towing, dusty conditions, or lots of short trips may justify earlier replacement for best performance.