Parts for your 1999 Toyota Hiace-Timing belt kit

1999 Toyota Hiace Timing Belt Kit — What’s Fitted and When It Matters

Technical sources indicate a timing-belt-kit is relevant to many 1999 Toyota Hiace variants, but not all. Toyota factory repair manuals and the Toyota Electronic Parts Catalogue show the 3.0L diesel engines used in 1999 Hiace models—such as the 5L (SOHC) and 1KZ-TE (DOHC turbo-diesel)—use a toothed timing belt with dedicated tensioner and idler pulleys. Aftermarket catalogues from major belt manufacturers also list complete kits for these engines. Conversely, 1999 Hiace petrol models with RZ-family engines (1RZ/2RZ/3RZ) run a timing chain, confirmed by Toyota engine mechanical sections, so a timing-belt-kit does not apply to those. If the vehicle is a 1999 Hiace diesel, a timing-belt-kit absolutely applies, for petrol RZ models, it doesn’t because a chain is used instead of a belt.

For a 1999 Toyota Hiace diesel, the timing-belt-kit is the quiet achiever that keeps the camshaft and crankshaft perfectly in step. That precise timing lets the Hiace start crisply, idle smoothly and pull strongly without drama. A proper kit bundles the belt with new tensioner and idler pulleys—and often a water pump and cam/crank seals—so everything that wears together gets refreshed together. That’s how owners keep the van reliable for long runs up the coast or stop–start courier work around town.

Replacement intervals for these engines are typically 100,000–150,000 km or 5–7 years, depending on the exact engine code and market guidance. Toyota service schedules and the timing cover sticker are the go-to checks, when in doubt, most Aussie and Kiwi workshops play it safe at around 100,000–120,000 km, particularly if service history is patchy. A tired or oil-contaminated belt can skip teeth, causing mis-timing, rough running, or a no-start—potentially expensive and always inconvenient. Doing the belt on time is far cheaper than a tow and teardown.

• What’s commonly in a quality kit: timing belt, hydraulic or spring tensioner, idler pulleys
• Often included or recommended: water pump, cam and crank seals, thermostat

Good servicing practice on a 1999 Hiace diesel is to replace the water pump and seals “while you’re in there”, inspect for oil leaks at the rocker cover and cam/crank seals, and renew coolant if the pump is changed. After installation, technicians set the tension to spec and verify timing marks. Owners should listen for chirps or whines from the front of the engine, check for coolant or oil around the timing cover, and stick a dated/kilometre sticker under the bonnet. Keep the belt on schedule, and the Hiace keeps earning its keep.

Popular questions

Which 1999 Hiace engines have a timing belt?
Diesel engines like the 5L and 1KZ-TE use a toothed timing belt. Petrol RZ-series engines (1RZ/2RZ/3RZ) use a timing chain, so a timing-belt-kit isn’t applicable to those models.

How often should the timing belt be replaced on a 1999 Hiace diesel?
Expect 100,000–150,000 km or 5–7 years. Check the engine code, the Toyota schedule, and any timing cover sticker. If service history is unknown, most workshops recommend replacing sooner rather than later.

Should the water pump be replaced with the timing belt?
Yes, it’s strongly recommended. The pump is driven by the belt on many diesel variants, and doing both together saves doubling up on labour while improving long-term reliability.