Parts for your 2014 Toyota Mark x-Centre bearing

2014 Toyota Mark X centre-bearing: what it does, why it matters, and when to replace

Technical conclusion: the 2014 Toyota Mark X (GRX130/GRX135) is fitted with a centre support bearing on its two‑piece propeller shaft. This is documented in the Toyota Mark X Repair Manual for the GRX130 series (Propeller Shaft section covering Centre Support Bearing removal/installation), the Toyota Electronic Parts Catalogue for GRX130 listing “Bearing Assy, Center Support, Propeller Shaft” in the driveline group, and the New Car Features (NCF) manual noting a two‑piece propeller shaft used for NVH and critical‑speed control. So the centre‑bearing is absolutely relevant to servicing on this model.

On the Mark X, the centre‑bearing supports the middle of the two‑piece tailshaft, keeping the shaft aligned and smooth as power heads to the rear wheels. By isolating vibration through a rubber carrier and holding the shaft steady, it cuts down on shudder and droning at highway speeds. Both rear‑wheel drive and “Four” (AWD) variants use this setup to manage length and driveline angles without copping harshness in the cabin.

It’s a sealed bearing, so there’s no greasing—maintenance is all about regular inspection. A good workshop will check it any time the car’s on a hoist: look for cracked or deformed rubber in the carrier, sagging support, or shiny witness marks from the shaft rubbing. With the car in neutral and safely supported, rotating the shaft by hand can reveal a rough or rumbly bearing. Grabbing the shaft near the centre support and checking for excessive play is another quick tell.

Common symptoms of a tired centre‑bearing include:

• Driveline vibration or shudder under load, often 60–80 km/h
• Clunk on take‑off or between shifts
• Low‑frequency drone that changes with road speed
• Visible tearing or separation of the rubber carrier

When replacement’s due, the shaft should be removed as an assembly and reinstalled with care. Mark the flanges for phasing, support the exhaust and heat shields, and torque the flange bolts to spec. The carrier bracket needs to be tightened with the shaft settled in its natural position—no side preload—or the new bearing can fail early. If the U‑joints show play (many are staked and non‑serviceable), plan on a driveline shop repair or a complete prop shaft assembly. A balance check is smart if any vibration remains after fitting. There’s no fixed interval, many last well past 120,000–200,000 km, but age, heat, and rough roads speed things up. Left too long, a flogged centre‑bearing can take out the rear transmission bush, U‑joints, or diff pinion bearings—so it pays to sort it promptly.

Best practice on the Mark X is simple: inspect at every major service, replace with quality OEM‑equivalent parts, keep the phasing spot‑on, and road test at typical vibration speeds after the job.

Popular questions

Does a 2014 Toyota Mark X have a centre‑bearing?
Yes. The GRX130/135 Mark X uses a two‑piece propeller shaft with a centre support bearing to control NVH and shaft critical speed on both RWD and AWD “Four” variants.

Can a Mark X centre‑bearing be lubricated?
No. It’s a sealed unit. Maintenance is inspection and, when worn, replacement of the bearing and carrier. Greasing won’t help a noisy or loose bearing.

How long does replacement take, and do you need a wheel alignment?
Allow roughly 1.5–3.0 hours depending on corrosion and heat shields. No wheel alignment is needed, but correct tailshaft phasing and carrier fitment are critical to avoid vibrations.