Parts for your 2006 Toyota Hilux-Timing belt kit

2006 Toyota Hilux Timing-Belt Kit — Fitment and Servicing Advice

Technical sources confirm that whether a timing-belt kit is relevant to a 2006 Toyota Hilux depends on the engine fitted. Toyota’s Hilux 2005–2011 Repair Manual and AU/NZ service schedules specify a timing belt on KD-series diesels (2KD-FTV 2.5 D-4D and 1KD-FTV 3.0 D-4D). Gates and Dayco AU/NZ catalogues also list timing-belt kits for these KD engines, typically including the belt, tensioner, idlers and often a water pump. In contrast, the 2006 petrol Hilux engines (2TR-FE 2.7 and 1GR-FE 4.0 V6) use a timing chain, not a belt, so a timing-belt kit is not applicable to those variants.

Why a kit isn’t used on the 2006 Hilux petrol models: the 2TR-FE and 1GR-FE run a chain inside the engine, lubricated by engine oil and designed to last the life of the vehicle under normal servicing. Chains aren’t replaced on a schedule like belts, they’re inspected if there’s rattle, stretch or guide wear. That’s why a timing-belt kit doesn’t apply to petrol Hiluxes of this year.

For the 2006 Hilux diesel (2KD/1KD), a timing-belt kit is a smart bit of preventative maintenance. The belt keeps the crank and cam perfectly in sync so valves open exactly when they should. Over time, the belt’s rubber and cord fatigue from heat, oil vapour and kilometres travelled. The kit bundles everything that wears together: belt, automatic tensioner, idler pulleys and, on many kits, a water pump that’s driven by the belt. Replacing the lot in one go saves repeat labour and reduces the chance of a weak old component taking out a brand-new belt.

Service timing: Toyota’s AU/NZ schedules for KD diesels call for timing-belt replacement at around 150,000 km (the timing-belt warning indicator is set to that interval). If the vehicle does low kilometres, use time as a guide—about 7–9 years. Many workshops also recommend doing the cam and crank seals if they’re weeping, and renewing coolant if the water pump is part of the job.

What to expect from a proper job under the bonnet:

• Quality belt with correct tooth profile
• New tensioner and idlers, torqued to spec
• Water pump (if included), fresh coolant and gasket/sealant
• Timing marks aligned, engine rotated by hand to verify
• Dash timing-belt light reset on KD models

Warning signs it’s due or overdue can include chirps, squeaks or a slappy noise on start-up, frayed belt edges, coolant trails from the pump, or rough running. A failed belt will stop the ute on the spot and risks serious internal damage, so it’s not worth rolling the dice. Using OEM or reputable brands (the same names found in the Gates and Dayco AU/NZ catalogues) and sticking to the kilometre/time interval will keep the D-4D pulling hard without drama.

Popular questions

How often should the timing belt be changed on a 2006 Hilux diesel?
For KD-series diesels (2KD/1KD), the timing belt is due at about 150,000 kilometres in AU/NZ service schedules, or earlier if contaminated by oil/coolant or showing wear. If the ute does short trips and low kilometres, replace by age at roughly 7–9 years.

Does the 2006 Hilux petrol have a timing belt?
No. The 2.7-litre 2TR-FE and 4.0-litre 1GR-FE petrol engines run a timing chain. There’s no timing-belt kit for these, the chain is lubricated by engine oil and inspected if noise or stretch is suspected.

Should the water pump be replaced with the belt on a 1KD/2KD?
Yes, it’s good practice. Many kits include the pump because it’s driven by the belt and sits behind the timing cover. Doing it at the same time avoids paying for the same labour twice and reduces the risk of a leaking pump taking out the new belt. Don’t forget fresh coolant.