Parts for your 2007 Subaru Impreza-Centre bearing

2007 Subaru Impreza centre-bearing — what it is and how to look after it

Referencing the Subaru Factory Service Manual for the 2007 Impreza (Propeller Shaft section), Subaru’s parts catalogue diagrams, and the Haynes Subaru Impreza 2001–2011 workshop manual, the 2007 Subaru Impreza sold in Australia and New Zealand (all-wheel drive across the range) uses a two-piece propeller shaft (tailshaft) with a rubber-mounted centre support bearing. So yes, a centre-bearing is fitted and relevant for this model.

The centre-bearing’s job is to support the two-piece tailshaft between the gearbox and the rear diff, keeping everything aligned while soaking up vibration. On the 2007 Impreza’s Symmetrical AWD layout, that bearing and its rubber insulator carry the driveline load, control shaft angle under acceleration and braking, and help keep cabin noise down. When it’s healthy, you barely notice it, when it’s tired, the car tells you about it with a droning hum at mid‑speeds, a shudder on take‑off, or a faint thump as you get on and off the throttle.

It’s not a scheduled replacement item, but it is worth a regular look during servicing. A quick check involves inspecting the bearing’s rubber mount for cracks or separation, confirming the bracket is tight and not distorted, and feeling for roughness or excessive play when the tailshaft is moved up and down by hand (with the vehicle safely supported). Because noise and vibration can also come from worn universal joints, engine and transmission mounts, or rear diff bushes, a methodical check saves time and guesswork.

If replacement is needed, the straightforward approach is to remove the tailshaft as an assembly. Mark the flanges and shaft halves before disassembly to preserve phasing and balance, drop the heat shields as required, undo the rear flange and the centre-bearing bracket, and lower the shaft. Subaru’s official line is that the tailshaft is a non‑serviceable assembly (the U‑joints and centre-bearing aren’t intended to be rebuilt in the dealer workshop). In practice, many driveline specialists can press in a new centre-bearing and rebalance the shaft, which can be a cost‑effective option if the rest of the assembly is in good nick.

On refit, use new self‑locking hardware where specified, follow torque specs from the service manual, and align the marks you made so the phasing stays correct. After any driveline work, a road test for vibration under different loads and speeds is the final check. Done right, a fresh centre-bearing brings that smooth, quiet Subaru feel back.

• Common signs: mid‑speed drone, take‑off shudder, visible rubber tears.
• Causes of wear: age, heat, fluid contamination, harsh launches, lifted/altered ride height.
• Repair paths: complete tailshaft replacement or specialist bearing press‑in and balance.

Popular questions

Does every 2007 Impreza have a centre-bearing?

In Australia and New Zealand, yes. All 2007 Impreza models here are all‑wheel drive and use a two‑piece tailshaft with a centre-bearing. In some overseas markets a front‑wheel drive Impreza existed, those cars don’t have a tailshaft, so a centre-bearing doesn’t apply.

How long does a centre-bearing last?

Many see well over 150,000–250,000 km, but lifespan varies with heat, age, fluid exposure, and driving style. If the rubber mount cracks or the bearing gets rough, you’ll usually notice vibration or a hum before outright failure. Early checks during routine services help catch issues before they become annoying.

Can just the centre-bearing be replaced, or is a whole tailshaft needed?

Subaru’s workshop guidance treats the tailshaft as a non‑serviceable unit, so dealers typically replace the full assembly. However, reputable driveline specialists can press in a quality centre-bearing and then balance the shaft. It’s often cheaper, provided the U‑joints and yokes are still in good condition.