Parts for your 2012 Suzuki Sx4-Centre bearing

2012 Suzuki SX4 centre-bearing: is it fitted, and what to do about it

Based on Suzuki technical literature, a centre-bearing is only relevant to 2012 Suzuki SX4 models equipped with All-Wheel Drive (often badged i-AWD). Front‑Wheel Drive SX4 variants don’t use a propeller shaft, so there’s no centre-bearing to service. This is shown in the Suzuki SX4 Service Manual (Driveline/Axle – Propeller Shaft section), where AWD models are illustrated with a two‑piece propeller shaft and a centre support bearing, and in the Suzuki Electronic Parts Catalogue, which lists a propeller shaft centre support/bearing assembly for AWD variants but none for FWD models. Many aftermarket catalogues likewise only list a centre support bearing for the AWD SX4.

For 2012 SX4 AWD owners, the centre-bearing is a small but crucial bit of the driveline. It cradles the two‑piece prop shaft midway along the car, keeping it aligned under load and at speed. The assembly uses a rubber isolator bonded around a sealed bearing, so it soaks up vibration and stops the shaft from whipping about on rough roads. When the rubber perishes or the bearing gets noisy, owners tend to notice a droning or humming at about 40–80 km/h, a shudder on take‑off, or a thump/clunk on lift‑off.

It’s not a scheduled replacement item, but it’s smart to have it checked at regular servicing, especially on vehicles that tow or see plenty of open‑road kays. A quick inspection involves looking for cracks in the rubber, play in the bearing, and corrosion on the support bracket. A road test for vibration under light throttle is handy too.

Replacement is straightforward for a competent technician but does need care. The prop shaft should be marked before removal so it goes back in phase, and fasteners need to be torqued to spec as per the Suzuki workshop manual. Heat shields usually come off for access, and the shaft must be supported to avoid stressing the CV joints. Because the bearing is a press‑fit on the shaft, a press and proper drivers are preferred, avoid belting it on with a hammer, as that can bruise the races. Many techs will replace related hardware (self‑locking nuts/bolts) and check the rubber guibo/uni joints at the same time. After refit, a quick road test to verify balance and no residual vibration is good practice. Done right, a fresh centre-bearing restores that smooth, quiet AWD feel the SX4 is known for.

Technical references: Suzuki SX4 Service Manual (2007–2013), Driveline/Axle – Propeller Shaft, Suzuki Electronic Parts Catalogue (2012 Model Year), Group 27 – Propeller Shaft/Center Support, major aftermarket drivetrain catalogues listing SX4 AWD centre support bearings.

Popular questions about 2012 Suzuki SX4 centre-bearing

Does every 2012 SX4 have a centre-bearing?

No. Only AWD (i‑AWD) models have a two‑piece propeller shaft with a centre-bearing. FWD versions don’t use a prop shaft, so there’s no centre-bearing fitted or required.

What are the signs the centre-bearing is worn?

Common symptoms include a humming or droning noise that rises with road speed, a shudder on take‑off, and a dull clunk on acceleration or lift‑off. Visual checks may show cracked rubber around the support.

Can the centre-bearing be replaced separately from the prop shaft?

Yes, on the SX4 AWD the centre support bearing can typically be replaced on its own, but it’s a press‑fit job. Many owners opt to have a driveline specialist handle the press work and confirm shaft balance.