Parts for your 1985 Suzuki Jimny-Centre bearing

1985 Suzuki Jimny centre bearing — is it a thing on this model?

Short answer: for a 1985 Suzuki Jimny (SJ410/SJ413 short‑wheelbase, commonly sold here as the Sierra), a centre bearing isn’t fitted and isn’t required. The factory driveline uses a single‑piece rear propeller shaft from the transfer case to the rear diff, so there’s no carrier/centre support in the middle.

This isn’t just workshop folklore. Technical literature backs it up:

• Suzuki SJ410 and SJ413 Service Manuals (propeller shaft/driveline sections, publication numbers commonly referenced as 99500‑80010 and 99500‑83A10) illustrate a one‑piece rear tailshaft on SWB models with no carrier bearing.
• Suzuki Electronic Parts Catalogues for SJ410/SJ413 list a centre (carrier) bearing only on long‑wheelbase/two‑piece tailshaft variants, not on the 1985 SWB Jimny/Sierra.
• Gregory’s Suzuki Sierra 1982–1998 (Driveline chapter) notes SWB models run a single‑piece rear shaft, while LWB/utility models use a two‑piece shaft with a centre bearing.

Why wasn’t a centre bearing used on the 1985 Jimny? The wheelbase is short, which keeps the rear tailshaft length within a range that doesn’t need mid‑span support. That shorter shaft maintains good critical speed headroom and manageable universal‑joint angles, so Suzuki could keep it simple, lighter, and cheaper with fewer parts to wear. It also helps off‑road — fewer hang‑ups and less to damage.

There are a couple of caveats worth mentioning. Long‑wheelbase Sierra variants (introduced later in many markets) and some ute conversions use a two‑piece tailshaft with a centre bearing. Aftermarket conversions or custom driveshaft work on lifted rigs can also add a centre bearing. If you’re unsure what you’ve actually got, a quick look under the vehicle will tell the story: a two‑piece shaft with a rubber‑mounted bracket mid‑chassis equals a centre bearing, a single straight shaft from the transfer case to the diff means none is fitted.

If you’re chasing vibration on a 1985 SWB Jimny, don’t look for a centre bearing — check the universal joints, slip yoke spline wear, output flange play at the transfer case and diff, tailshaft balance, and pinion/transfer case angles after any lift. Those are the usual suspects on these trucks.

• Popular question: Does a 1985 Jimny/Sierra have a centre bearing?
• Answer: Not on short‑wheelbase SJ410/SJ413 models. Only certain long‑wheelbase/two‑piece tailshaft variants (generally later models) use a centre bearing.

FAQs

Does my 1985 Jimny have a centre bearing from factory?
For the 1985 short‑wheelbase SJ410/SJ413 (Sierra), no. The factory setup is a single‑piece rear tailshaft with no carrier bearing. Long‑wheelbase or later utility variants with a two‑piece shaft are the ones that run a centre bearing.

How can I tell if a centre bearing is fitted on my Jimny?
Look underneath: a two‑piece tailshaft with a rubber‑mounted bracket on the chassis midway down is a dead giveaway. If you see one straight shaft running from the transfer case to the rear diff, there’s no centre bearing.

I’ve got driveline vibration. Could it be the centre bearing?
On a 1985 SWB Jimny, unlikely — there isn’t one. Check universal joints, slip yoke splines, tailshaft balance, and driveline angles (especially after a lift). If yours is a long‑wheelbase or converted two‑piece shaft setup, then a worn centre bearing could be in play.