Parts for your 2007 Toyota Land cruiser-Spark plugs

2007 Toyota LandCruiser spark plugs — what they do and when to replace them

Based on Toyota service information and engine specifications (Toyota Owner’s Manual and Repair Manual for 100/200 Series, plus Denso/NGK catalog data), spark plugs are fitted to 2007 LandCruiser models with petrol engines (notably the 2UZ‑FE 4.7‑litre V8). They’re not used on diesel variants like the 1HD‑FTE 4.2 and 1VD‑FTV 4.5 V8, which rely on compression ignition (and in some cases glow plugs for cold starts) rather than spark ignition. So, for a 2007 LandCruiser: petrol = spark plugs, diesel = no spark plugs.

For petrol models, spark plugs are essential. Each plug fires to ignite the air–fuel mix, giving smooth starts, crisp throttle response, and decent fuel economy. When they’re tired, the engine can feel lazy, use more fuel, and throw misfire codes.

Service guidance from Toyota for the 2UZ‑FE calls for long‑life iridium/platinum plugs. In typical Aussie and Kiwi conditions, expect replacement around 120,000–160,000 km (or as stated in the vehicle’s service booklet). Towing, lots of short trips, dust, or heavy off‑road work can justify earlier checks. Always match OEM spec heat range and reach, quality Denso or NGK iridium plugs to Toyota spec are the go‑to.

Good practice under the bonnet includes replacing all plugs as a set on a cold engine, blowing debris out of the plug wells first, and carefully removing the coil‑on‑plug units. Iridium tips come pre‑gapped, avoid forcing the gap. Toyota notes no anti‑seize on the threads of plated plugs, it can lead to over‑torque. Tighten to the torque in the workshop manual (commonly in the 18–25 N·m window, model‑specific). A light smear of dielectric grease on the coil boots helps sealing without gluing anything together.

If the LandCruiser hesitates under load, idles rough, starts hard, or the fuel figure creeps up, the plugs may be due. Misfire codes are a giveaway, but coils and boots can also age, so inspect them when the plugs are out. Stick with genuine‑equivalent parts, keep to the service schedule, and the big V8 will stay happy whether it’s touring the High Country or hauling the boat.

For diesel owners, spark plugs aren’t part of the equation. Those engines use compression ignition and may have glow plugs or intake heaters for cold starts—these have their own checks and replacement intervals in the diesel service schedule.

• Use OEM‑spec iridium/platinum plugs for 2UZ‑FE
• Replace as a full set every ~120,000–160,000 km (check your book)
• No anti‑seize, torque to Toyota spec on a cold engine
• Inspect coils/boots and air filter while you’re there

Popular questions about 2007 Toyota LandCruiser spark plugs

Does my 2007 LandCruiser have spark plugs?

Yes if it’s a petrol model (2UZ‑FE 4.7 V8), no if it’s a diesel (1HD‑FTE or 1VD‑FTV). Petrol engines need spark to ignite the mix, while diesels rely on compression ignition.

Check the engine code on the build plate or in the owner’s manual if you’re unsure.

How often should spark plugs be replaced on the 2UZ‑FE?

Toyota specifies long‑life iridium/platinum plugs, typically due around 120,000–160,000 km. Dusty touring, heavy towing, or short‑trip driving can warrant earlier inspection.

Always confirm the interval in the service booklet for your exact variant.

What are the signs the plugs need attention?

Hard starts, rough idle, misfires under load, sluggish performance, higher fuel use, or a check‑engine light are common clues. Scan tool misfire codes may appear.

When replacing plugs, also check coil boots and consider preventive replacement if they’re cracked or oil‑soaked.