Parts for your 2016 Subaru Impreza-Centre bearing

2016 Subaru Impreza centre-bearing

Based on Subaru’s workshop manual for the GP/GJ Impreza (Driveline &, Axle – Propeller Shaft, 2012–2016) and the Subaru FAST parts catalogue, the 2016 Subaru Impreza (AWD) uses a two-piece propeller shaft with an integrated centre support bearing (centre-bearing). These sources describe a factory-balanced tailshaft assembly with a rubber-isolated centre-bearing that mounts to the body. In Australia and New Zealand, 2016 Impreza models are AWD, so a centre-bearing is relevant. Note: FWD-only variants in some markets do not use a propeller shaft and therefore have no centre-bearing.

The centre-bearing’s job is to support the two-piece tailshaft, control driveline angles, and keep vibration in check. It sits roughly mid-length, cradled in rubber to absorb harshness, so the shaft stays stable under acceleration, coasting, and over bumps. By supporting the shaft and maintaining geometry, it helps protect the CVT/manual gearbox output, universal joints, and rear differential from undue load and chatter.

Subaru’s factory documentation specifies the centre-bearing as part of the propeller shaft assembly. In practice, that means maintenance is inspection-focused rather than lubrication or adjustment. During servicing, a technician will check the rubber isolator and bearing for cracks, sag, free play, or roughness, and confirm the mounting bracket bushes are sound. Typical warning signs include:

• Driveline vibration that peaks around 60–100 km/h.
• Thrum or humming that rises with road speed, independent of engine rpm.
• Clunk on take-off or when shifting from drive to reverse.
• Visible tearing or deformation of the centre-bearing rubber.

If the centre-bearing is noisy or the rubber has collapsed, Subaru service literature advises replacing the complete propeller shaft assembly rather than pressing in a new bearing, as the unit is non-serviceable and factory balanced. Aftermarket bearings do exist, but pressing and aligning them without upsetting balance is specialist work. Good workshop practice includes:

1. Road test to confirm vibration source, rule out tyres, wheel balance, engine/trans mounts, and rear diff bushes.
2. Mark flange orientations before removal to preserve balance and phasing.
3. Use new flange bolts where specified and tighten to the workshop manual torque values.
4. Recheck driveline angles and exhaust clearance after refit, then road test.

FAQs

Does a 2016 Subaru Impreza have a centre-bearing?
Yes, AWD 2016 Impreza models use a two-piece propeller shaft with a rubber-isolated centre support bearing. FWD-only variants in some regions don’t have one because they lack a tailshaft.

Can the centre-bearing be replaced on its own?
Subaru specifies the centre-bearing as part of the complete propeller shaft assembly. While some aftermarket bearings exist, proper pressing, alignment, and balance are critical, so many workshops replace the full assembly for reliability.

What symptoms point to a worn centre-bearing?
Common signs are a speed-dependent vibration (often noticeable at 60–100 km/h), a deep thrum or hum that follows road speed, and a clunk on take-off. Underbody inspection may show cracked or sagging rubber at the bearing mount.