Parts for your 2011 Mazda Premacy-Centre bearing

2011 Mazda Premacy centre-bearing — is it actually a thing on this model?

Short answer: a centre-bearing isn’t fitted to the 2011 Mazda Premacy (CW). Technical documentation for the CW-series Premacy/Mazda 5 shows a front-wheel-drive layout with no propeller shaft, so there’s no need for a centre support bearing in the driveline. This is confirmed by the Mazda 5/Premacy CW Workshop Manual in the Driveline/Axle and Front Drive Shaft sections, and by Mazda’s Electronic Parts Catalogue for the CW platform, which lists front halfshafts and an RH intermediate shaft but no prop shaft or centre-bearing.

Why it’s not used: a centre-bearing supports a long, two-piece propeller shaft typically found on rear-wheel-drive or all-wheel-drive vehicles. The 2011 Premacy runs a transverse engine with a transaxle, driving two front halfshafts. There’s no long tailshaft running down the car, so a centre-bearing would serve no purpose. Instead, many FWD Mazdas—including the Premacy—use an RH intermediate (jack) shaft to keep the driveshaft lengths equal, and that intermediate shaft has its own support bearing mounted to the engine block/subframe. That bearing is sometimes confused for a “centre-bearing”, but it’s a different component with different fitment and service procedures (Mazda Workshop Manual, CW series, Drive Shaft, Mazda EPC, Front Axle/Drive Shaft group).

If a Premacy owner is chasing vibrations or drivetrain noise and thinks “centre-bearing”, it’s worth checking these usual suspects instead:

• RH intermediate shaft support bearing (if worn, it can rumble or drone with road speed)
• Inner/outer CV joints and boots on both halfshafts
• Front wheel bearings and tyre condition/balance
• Engine and transmission mounts causing shudder under load

Parts identification tip: the Mazda EPC for the CW Premacy lists the “Intermediate Shaft (RH) with Bearing Bracket” under the front drive shaft group, there’s no listing for a propeller shaft or centre support bearing because the vehicle isn’t configured that way.

Bottom line for this model: there’s no centre-bearing to replace on a 2011 Mazda Premacy. If the goal is to cure humming, droning, or vibration, focus diagnosis on the front drive shafts (including the RH intermediate shaft support bearing), front hubs/wheel bearings, mounts, and tyres.

• Does a 2011 Mazda Premacy have a centre-bearing?
• What’s the bearing on the Premacy’s right-hand driveshaft that people talk about?
• What should be checked first if there’s a vibration that sounds like a “centre-bearing” issue?

Does a 2011 Mazda Premacy have a centre-bearing?
No. The CW-series Premacy is front-wheel drive and doesn’t use a propeller shaft, so there’s no centre support bearing in the driveline. Mazda’s workshop manual and parts catalogue list only front halfshafts and an RH intermediate shaft with its own support bearing.

What’s the bearing on the Premacy’s right-hand driveshaft that people talk about?
That’s the intermediate (jack) shaft support bearing. It supports the short RH intermediate shaft to keep driveshaft lengths more equal and reduce torque steer. It’s not a prop-shaft centre-bearing, but if worn it can cause humming or vibration with road speed.

What should be checked first if there’s a vibration that sounds like a “centre-bearing” issue?
Start with the RH intermediate shaft support bearing, both CV joints, front wheel bearings, and tyre balance/condition. Also look at engine and transmission mounts if there’s shudder under load. These are the usual culprits on a FWD Premacy.