Parts for your 2016 Mazda Bt-50-Centre bearing

2016 Mazda BT-50 Centre Bearing — purpose, service and replacement

Based on the Mazda BT-50 UP/UR Workshop Manual (2012–2018) driveline section and the Mazda Electronic Parts Catalogue for UP/UR series, the 2016 BT-50 is fitted with a propeller shaft centre support bearing on models that run a two-piece tailshaft (most Dual Cab and 4x4 variants). Equivalent Ford Ranger PX workshop documentation for the shared T6 platform also specifies a centre bearing for two-piece shafts. Some low-ride 4x2 Single Cab models use a one-piece tailshaft and therefore do not have a centre bearing. For most 2016 BT-50s on Aussie and Kiwi roads, the centre-bearing is a standard, serviceable item.

On two-piece shafts, the centre-bearing’s job is to support the tailshaft mid-span, keep driveline angles in check, and soak up vibration. It helps the ute put torque to the ground smoothly, reduces shudder on take-off, and cuts down on droning at highway speeds. It’s especially important for vehicles carrying loads, towing, or spending time on corrugations where the rubber isolator in the bearing bracket works hard to control movement.

As part of routine servicing, the centre-bearing deserves a look whenever the ute is on a hoist. Sensible intervals are every 20,000–30,000 km, or sooner for vehicles that tow or work off-road. Checks should cover the rubber support (for splits, sagging, or separation), bearing play or roughness, bracket condition, and tailshaft alignment. Lifted BT-50s or vehicles with altered rear ride heights may need driveline angle checks, as incorrect angles can chew through a centre-bearing and uni joints prematurely.

• Common symptoms of a failing centre-bearing:
  • Shudder on take-off or under load
  • Droning or humming at 50–80 km/h that changes with throttle
  • Clunking on gear changes or when backing off
  • Visible sagging/cracked rubber or excess tailshaft movement

Replacement is straightforward for a trained tech: mark the tailshaft for phasing, remove both halves, press the old bearing off the shaft, and install the new unit to the correct depth and orientation. Bracket bolts are torqued to spec from the workshop manual, and the shaft is refitted in phase. It’s smart to assess uni joints at the same time and to balance the shaft if there’s any doubt. On modified suspensions, confirming pinion/driveline angles after the job helps avoid a repeat visit. Quality OE or reputable aftermarket bearings last well when alignment is right and the rubber isn’t constantly overloaded.

FAQs

Does every 2016 Mazda BT-50 have a centre-bearing?
Not every one. Most Dual Cab and 4x4 variants have a two-piece tailshaft with a centre support bearing. Some low-ride 4x2 Single Cab models use a one-piece tailshaft and don’t have a centre-bearing at all.

What are the signs a BT-50 centre-bearing is failing?
Shudder on take-off, a droning or humming around 50–80 km/h that varies with throttle, clunks on load changes, and visible rubber sagging or cracks are the usual giveaways. Any roughness when spinning the shaft by hand with the vehicle safely raised is another clue.

Can the centre-bearing be replaced without removing the tailshaft?
No. The tailshaft has to come out and be separated to press the bearing off and on correctly. A proper press fit, correct orientation, phasing marks, and torque settings are all part of doing the job right. Many workshops also recommend checking balance afterwards.