Parts for your 2004 Subaru Forester-Centre bearing

2004 Subaru Forester centre-bearing

Based on technical documentation, a centre-bearing is used on the 2004 Subaru Forester. The Subaru SG Forester Factory Service Manual (Propeller Shaft section) specifies a two-piece tailshaft with a centre support bearing and bracket, and Subaru’s Electronic Parts Catalogue for MY2004 lists the centre-bearing/support as part of the propeller shaft assembly. Aftermarket catalogues in AU/NZ also list a tailshaft centre support bearing for this model, confirming fitment.

On a 2004 Forester, the centre-bearing’s job is to support the two-piece tailshaft, keeping it aligned between the transmission and rear diff. It soaks up vibration, controls shaft movement under load, and helps protect the uni joints, output shaft seal and diff pinion from copping extra stress. The bearing is pressed onto the shaft and sits in a rubber isolator, with the bracket bolting up to the tunnel.

It isn’t a routine “replace at X km” service item, but it should be inspected whenever the car’s on a hoist. Owners often first notice a tired centre-bearing as a droning or rumbling between about 40–80 km/h, a shudder on take‑off, or a vibration that gets worse under load and eases off on decel. Visual clues include torn rubber around the support, the tailshaft sitting off-centre in the bracket, or excess play when the shaft is pushed up/down by hand.

• When replacing: mark the flanges so the tailshaft goes back in phase and in the same orientation for balance.
• Unbolt the rear flange, remove the centre bracket, then withdraw the shaft, expect a little trans oil at the extension housing, so have a plug handy.
• Press the old bearing off carefully, avoid nicking the yoke. Refit the new bearing and bracket, align balance marks, and torque all fasteners to the workshop manual spec with thread locker where called for.

Genuine Subaru often supplies the centre-bearing with the complete prop shaft, while many AU/NZ driveline specialists offer the bearing and support as separate service parts. After installation, a short road test to check for any residual vibration is smart. If the Forester’s been lifted or has worn engine/gearbox mounts, check driveline angles and mount condition too, as they can mimic the same symptoms.

Quick technical references used: Subaru SG Forester Factory Service Manual (Propeller Shaft), Subaru EPC group for Propeller Shaft/Centre Support, and AU/NZ aftermarket driveline listings for 2004 Forester centre support bearings.

Popular questions

How do they know if their 2004 Forester’s centre-bearing is failing?
Common signs are a low rumble or droning at road speed, a shake on take‑off, and vibration that worsens under throttle. Under the car, torn support rubber or the shaft sitting off-centre in the bracket are giveaways. Always rule out uni joints, wheel balance and engine/gearbox mounts at the same time.

Can the centre-bearing be replaced on its own, or is a full tailshaft needed?
From Subaru, the centre support often comes with the complete prop shaft. However, plenty of AU/NZ driveline suppliers offer the bearing and support as separate parts. A press is usually required, and refitting demands correct phasing and alignment to avoid vibration.

What does replacement typically involve and how long does it take?
It’s a remove-and-refit of the two-piece tailshaft, pressing off the old bearing, installing the new one, and reassembling with alignment marks matched. A workshop will usually take around 2–3 hours if no fasteners are seized and the uni joints are serviceable.