Parts for your 2020 Mazda Cx-5-Centre bearing

2020 Mazda CX-5 centre-bearing

Based on Mazda’s KF-series Workshop Manual (Propeller Shaft section) and Mazda Electronic Parts Catalogue (EPC) listings for the 2020 CX-5 AWD, this model uses a two-piece propeller shaft with a centre support bearing (often called a centre-bearing) mounted to the body via a bracket. Front-wheel-drive (FWD) CX-5 variants do not have a propeller shaft and therefore do not use a centre-bearing. Mazda service information further notes the centre-bearing is supplied as part of the complete propeller shaft assembly rather than as an individual service part, which is consistent with many modern AWD layouts.

The centre-bearing on an AWD 2020 CX-5 supports the two-piece prop shaft that feeds torque to the rear differential. It keeps the shaft aligned under load, cuts vibration, and helps the SUV feel smooth on throttle. The rubber isolator around the bearing absorbs NVH so occupants don’t cop a droning rumble through the cabin, especially during take-off or at motorway speeds.

For servicing, there’s no regular greasing—the bearing is sealed. What matters is periodic inspection: look for perished or torn rubber in the support, rust-dust or play at the bearing, and any witness marks showing the bracket has shifted. On the road, classic symptoms include a low-frequency hum that rises with vehicle speed, shudder on launch, or a clunk when getting on and off the throttle. Tyres and wheel bearings can make similar noises, so a proper diagnosis on a hoist is the go.

When the centre-bearing is tired, Mazda’s workshop guidance is to replace the complete propeller shaft assembly. That avoids balance issues and ensures the CV/universal joints and centre support work as a matched set. Some driveline specialists can press in an equivalent bearing and re-balance the shaft, but owners should insist on dynamic balancing to OE tolerance. During replacement, techs will mark flange positions to maintain balance, torque the centre support bracket correctly, and check the rear diff and transfer case seals for weeps. It’s also smart to inspect the prop shaft CV boots and the AWD coupling at the same time.

For Kiwi and Aussie conditions—long distances, corrugations, and the odd gravel run—an annual underbody check is cheap insurance. If the vehicle’s lifted or sees plenty of rough tracks, shorten the inspection interval, as driveline angles can accelerate wear.

• FWD CX-5: no centre-bearing (no prop shaft).
• AWD CX-5: two-piece prop shaft with centre-bearing, typically replaced as a complete assembly.

Popular questions

Does every 2020 Mazda CX-5 have a centre-bearing?
No. Only AWD variants have a centre-bearing because they use a two-piece propeller shaft to drive the rear wheels. FWD models don’t have a rear driveline, so there’s no centre-bearing fitted.

Can the centre-bearing be replaced on its own?
Mazda supplies the propeller shaft as a complete assembly. While some driveline shops can press in a replacement bearing, the shaft must be re-balanced to OE spec. Many workshops prefer the complete assembly to avoid NVH dramas.

What symptoms point to a worn centre-bearing?
Owners often report a droning hum that follows road speed, a shudder on take-off, or a clunk when loading and unloading the driveline. Visual checks may show cracked rubber in the support or excess play at the bearing.