Parts for your 2012 Isuzu D-max-Steering bushes

2012 Isuzu D‑MAX steering-bushes: what they do and when to replace them

Referencing the Isuzu D‑MAX 2012 Workshop Manual (TFR/TFS, Steering System – Rack‑and‑Pinion) and the sister platform Holden Colorado RG 2012 Service Manual (Steering Gear Mounting Insulators), this 2012 Isuzu D‑MAX runs a hydraulic rack‑and‑pinion steering gear that’s mounted to the front crossmember with rubber insulator bushes. So yes, steering-bushes are fitted to this ute and they’re a normal wear item that can be serviced.

Those steering-bushes sit between the rack housing and the chassis, isolating vibration while keeping the rack located under load. When they’re fresh, steering feels tight and direct, when they’re flogged out, the rack can shift slightly on the mounts, which shows up as vague steering, shudder over corrugations and an occasional clunk on turn‑in or when hitting potholes. Off‑road use, bigger tyres, towing and corrugated Kiwi or Aussie backroads all speed up wear.

As part of routine servicing on a 2012 Isuzu D‑MAX, it’s smart to check the steering-bushes every 20,000–40,000 km or annually alongside a front‑end inspection. A technician will look for cracking, compression set, oil swelling and any witness marks that suggest the rack has been moving. If play is felt at the wheel and tie‑rod ends are fine, the bushes are a usual suspect. Replacement is straightforward with the rack supported: remove the mounting bolts, swap the insulators and sleeves, then torque everything to factory spec. An alignment is recommended afterwards, especially if anything else in the front end has been touched.

Owners can choose between OEM‑style rubber (quiet, compliant) and quality polyurethane (firmer feel, sharper response, better longevity). For heavy touring and 4x4 use, poly can be a tidy upgrade, for everyday city and highway kays, fresh rubber is perfectly fine. Either way, avoid mixing old and new bushes and always reinstall with the correct orientation and hardware. If the rack has fluid leaks or internal play, replacing bushes alone won’t fix the issue—address the rack first.

• Common signs it’s time: steering shimmy, lane‑change wander, clunks over bumps, uneven tyre wear, and a “thud” when loading the steering in car parks.
• Good practice: inspect during every service, replace in pairs, and re‑torque after the first few hundred kilometres.

Popular questions about 2012 Isuzu D‑MAX steering-bushes

How long do the steering-bushes last?
On mostly sealed roads, many see 80,000–150,000 km. With bigger tyres, towing and corrugations, expect shorter intervals. Regular inspections will catch them before they get noisy.

Rubber or polyurethane—what’s better?
Rubber gives the quietest ride and factory feel. Polyurethane tightens steering feedback and usually lasts longer, handy for touring and off‑road. Pick based on how the ute is used.

Do I need a wheel alignment after replacing them?
The bushes don’t change geometry directly, but disturbing the rack and front end makes an alignment a smart move to keep tyre wear tidy and steering centred.