Parts for your 2017 Isuzu D-max-Centre bearing

2017 Isuzu D‑MAX centre-bearing — what it does, when to replace it, and how to look after it

Referencing the Isuzu D‑MAX (RT50/RT85, 2012–2019) Workshop Manual’s propeller shaft section, the Isuzu UTE Australia Electronic Parts Catalogue, and major driveline catalogues used in AU/NZ trade (including Hardy Spicer and GMB), the 2017 D‑MAX is supplied on most variants with a two‑piece tailshaft that uses a centre support bearing (centre‑bearing). Only some short‑wheelbase, one‑piece tailshaft variants may omit it. For the typical 2017 D‑MAX seen in Australia and New Zealand, a centre‑bearing is fitted and very much relevant.

On a 2017 Isuzu D‑MAX, the centre‑bearing supports the two‑piece tailshaft between the gearbox and rear diff. It keeps the shaft running true, controls vibration, and helps the driveline cope with load, suspension travel, and changes to vehicle height or angles. In plain speak, it’s the cushy middle mount that stops the shaft from whipping about at speed.

Servicing wise, it’s smart to eyeball the centre‑bearing at every routine service or at least every 10,000–15,000 kilometres. A quick inspection looks for cracked or sagging rubber, roughness or play in the bearing, and any contact marks around the bracket. If the ute has a lift, heavy towing setup, or spends time on corrugations, check it more often.

• Common symptoms of wear:
  • Shudder on take‑off or under load.
  • Driveline vibration at steady speeds (often 60–80 km/h).
  • Clunk on throttle on/off or gear changes.
  • Visible droop, torn rubber, or shiny rub marks near the carrier.

Replacement is usually done as an assembly (bearing and carrier), and the tailshaft should be marked for phasing before removal so it goes back exactly as it came out. It’s a straightforward job for a workshop, but it pays to have a driveline specialist press the bearing and check balance if the shaft has been separated. After refit, the bracket is tightened evenly, and the driveline angles are verified — particularly important if the D‑MAX runs a suspension lift, extended shackles, or load‑assist gear.

There’s no strict replacement interval, it’s condition‑based. High‑kilometre touring, towing, beach work, and outback tracks can accelerate wear. As part of preventative maintenance, combine centre‑bearing checks with uni‑joint inspection, tailshaft spline lubrication (where applicable), and a road test to confirm any vibration has been sorted.

• Does a 2017 Isuzu D‑MAX have a centre‑bearing?

  Yes — most 2017 D‑MAX models in Australia and New Zealand use a two‑piece tailshaft with a centre‑bearing. Only certain short‑wheelbase, one‑piece tailshaft variants may not have one. If unsure, a quick look under the ute will reveal a mid‑shaft carrier bracket.

• What are the signs the D‑MAX centre‑bearing is failing?

  Tell‑tales include a shudder on take‑off, vibration at highway speeds, a clunk when getting on and off the throttle, and a drooping or cracked rubber mount. Any of these warrant an inspection before they snowball into uni‑joint or shaft issues.

• How long should a centre‑bearing last, and what affects its life?

  Service life varies with load, terrain, and vehicle height. Utes that tow, carry heavy gear, or see corrugations can wear the bearing sooner. Keeping driveline angles in check (especially after a lift), inspecting it each service, and sorting vibrations early will maximise longevity.