Parts for your 2004 Toyota Ist-Centre bearing

2004 Toyota ist centre-bearing: is it even a thing?

For most 2004 Toyota ist models, a centre-bearing isn’t fitted or relevant. The ist is built on a front-wheel-drive platform (NCP60/NCP61), which uses a transaxle and short CV shafts to drive the front wheels. There’s no long tailshaft running down the car, so there’s nothing for a centre support bearing to hold up. This layout is detailed in Toyota’s New Car Features for the NCP60-series and the Drivetrain/Axle sections of the Toyota/Scion xA (NCP61) factory repair manuals, which show only front drive components and no propeller shaft.

Where a centre-bearing does come into play is on the less common all-wheel-drive ist (model code NCP65, JDM only). The Toyota Electronic Parts Catalog (EPC) lists a propeller shaft and related centre support hardware for NCP65, but not for NCP60/61. So, unless the car is the AWD variant, a “centre-bearing” simply isn’t part of the vehicle.

Why isn’t it used on most 2004 ist? Because the front-drive layout removes the need for a long, two-piece tailshaft. Instead, the ist runs two short drive axles from the transaxle. The right-hand axle does use an intermediate shaft with a support bearing mounted to the engine block, and this is sometimes mistaken for a centre-bearing. They’re different parts doing different jobs: the intermediate shaft bearing stabilises a front driveshaft, a centre-bearing supports a long prop shaft in the middle of the car.

• FWD (NCP60/NCP61): no centre-bearing, may have an intermediate shaft bearing on the RH driveshaft.
• AWD (NCP65): has a propeller shaft and typically a centre support bearing.

Not sure which one you’ve got? Under the car, look for a prop shaft running to a rear differential. Or check the build plate for NCP65 and a “4WD” indicator. If it’s FWD, any rumble or vibration is more likely from tyres, wheel balance, CV joints, or engine/trans mounts rather than a non-existent centre-bearing.

Technical references: Toyota Electronic Parts Catalog (EPC) for NCP60/NCP61/NCP65, Toyota New Car Features (NCF) NCP60-series, Toyota/Scion xA (NCP61) Repair Manual, Drivetrain/Axle sections.

• Popular questions

Does a 2004 Toyota ist have a centre-bearing?
Most don’t. The common FWD models (NCP60/NCP61) don’t use a centre-bearing at all. Only the AWD NCP65 variant has a propeller shaft that may use a centre support bearing. If there’s no rear diff or prop shaft, there’s no centre-bearing to worry about.

How can I tell if my ist needs a centre-bearing replacement?
If it’s FWD, it doesn’t have one. If it’s AWD (NCP65), look for a droning or rumbling that changes with road speed, plus vibration under load. Inspect the rubber mount of the centre support for cracks or sagging. Any play in the prop shaft at the support bracket is a red flag and calls for replacement.

I’ve been told my ist’s “centre-bearing” is noisy, but mine is FWD—what could it actually be?
On FWD models, that “centre-bearing” call-out often means the right-hand intermediate shaft bearing, or it could be CV joints, wheel bearings, or even tyre cupping. A proper road test and under-car check will pinpoint the culprit before any parts are ordered.