Parts for your 2019 Holden Commodore-Steering bushes

2019 Holden Commodore steering-bushes: are they a thing?

Short answer: no — “steering-bushes” aren’t a separate, serviceable part on the 2019 Holden Commodore (ZB). This model uses an electric power steering (EPS) rack that bolts directly to the front subframe. There aren’t any replaceable rack-mount bushes like you’d find on older Aussie Commodores, and there’s no rubber “rag joint” in the column either. If someone’s hunting for “steering-bushes” for a ZB, they’ll come up empty because the design simply doesn’t use them as a standalone item.

That’s not a guess. Technical documentation for the ZB/Opel Insignia B platform shows the EPS rack fastened to the crossmember with solid hardware and no listed rack-mount bush kit. The intermediate shaft uses universal joints (not a rubber coupling), and Holden’s EPC doesn’t list a separate steering bush under the steering gear group. Aftermarket application guides that normally scream “rack mount bushes here!” for earlier Commodores don’t list any for ZB either. In practice, if there’s play or a knock at the front of a ZB, it’s almost always from inner or outer tie rods, lower control arm bushes/ball joints, or subframe bushes — not a steering bush that doesn’t exist on this car.

Why did Holden/Opel go this way? It’s modern EPS design. NVH is managed by the subframe and control arm bushings plus software tuning in the electric steering, rather than isolating the rack with separate rubber bushes. If the rack’s mounting isolation is compromised (rare), the service action is typically rack replacement rather than pressing in new bushes.

If the steering feels vague or you’ve got a clunk on your 2019 Commodore, a decent service checklist is:

• Inspect inner and outer tie rods and rack boots for wear or play.
• Check lower control arm rear bushes and ball joints (common wear points that affect steering feel).
• Confirm subframe bushes and engine mounts aren’t letting the cradle shift.
• Verify tyre pressures, tyre condition, and get a proper alignment.
• Listen for column/intermediate shaft U-joint stiffness or notchiness.

Technical sources referenced: GM Global Service Information (ZB Commodore/Opel Insignia B) — Electric Power Steering System Description & Operation, Power Steering Gear Replacement, Steering Column Description & Operation. Holden Electronic Parts Catalogue (ZB) — Steering Gear group (no separate rack-mount bush listed). Major aftermarket bushing catalogues — no steering rack bush application for ZB Commodore.

• Does the 2019 Commodore have steering rack bushes you can replace?
  No. The ZB’s EPS rack mounts solidly to the subframe and doesn’t use separate, serviceable rack-mount bushes. If there’s movement or noise, diagnosis focuses on the tie rods, control arm bushes/ball joints, and subframe bushes.
• What symptoms feel like “worn steering bushes” on a ZB?
  Common culprits are loose inner/outer tie rods (steering play, clunk over bumps), worn lower control arm rear bushes (vague turn-in, braking shimmy), or tired subframe bushes (thud on take-off/over potholes). None of these are steering bushes, but they can feel similar to what people describe.
• What’s the best maintenance to keep the ZB’s steering tight?
  Regularly check tie rods and rack boots, inspect control arm bushes, keep tyres and alignment spot on, and make sure the column U-joints move freely. The EPS itself is largely maintenance-free unless faults are logged.