Parts for your 2015 Isuzu D-max-Strut mounts

2015 Isuzu D‑MAX strut mounts — purpose, checks and when to replace

Based on the Isuzu RT‑series workshop manual (2012–2016) and major suspension catalogues from KYB, Monroe and SuperPro, the 2015 Isuzu D‑MAX runs an independent double‑wishbone front end with a coil‑over shock. It isn’t a MacPherson strut, but the shock and coil are secured to the body with an upper “top mount” (commonly called a strut mount). Those same catalogues list replacement top mounts for 2012–2019 D‑MAX/MU‑X models, confirming the part is fitted and relevant.

On this ute, the strut mount’s job is to isolate road harshness and anchor the coil‑over assembly to the chassis tower. Unlike a MacPherson setup, there’s no steering bearing in the mount — the turning happens at the upper and lower ball joints — so the mount is a robust rubber/metal assembly that takes a pounding from corrugations, towing and accessory weight.

Typical signs it’s time to replace include:

• Clunks or knocking from the top of the front suspension over bumps
• Vague front‑end feel or a thud on driveway entries
• Visible cracking or separation in the top mount rubber
• Uneven tyre wear or a change in ride height after a hit

For servicing, it pays to inspect the strut mounts every 20,000–30,000 km, or sooner if the D‑MAX works hard with a bull bar, winch or spends time off‑road. Expect life anywhere from 100,000 km to 200,000 km depending on load and terrain. If one side’s worn, do both sides together — it keeps ride height and handling balanced.

Replacement tips a workshop would follow: mark the mount orientation before removal, use a quality spring compressor, and support the lower arm so the shock shaft isn’t side‑loaded. Tighten the top nut to spec without spinning the shaft (use the correct hex to hold it), and nip the mount hardware with the ute at normal ride height to avoid bushing preload. A wheel alignment is recommended after any front suspension removal, especially if new coils or lift components are fitted.

Quality OE‑equivalent or reputable aftermarket mounts are the go, pair them with fresh upper bushes if there’s any play. Keeping the mounts healthy helps the D‑MAX track straight, quietens the cabin, and saves the rest of the front end from copping extra punishment.

FAQs

Does a 2015 D‑MAX actually have strut mounts?
Yes. While it’s not a MacPherson strut, the coil‑over shock assembly uses a top mount (often called a strut mount) to attach to the body tower. It doesn’t contain a steering bearing, the steering pivots at the ball joints.

How long do D‑MAX strut mounts last?
Anywhere from 100,000 to 200,000 km in typical Aussie and Kiwi conditions. Heavy accessories, towing and corrugations shorten that. Inspect at each service and replace in pairs if wear is noted.

Can the strut mounts be replaced without changing shocks and coils?
They can, but if the shock or spring is tired, it’s smart to do the lot while it’s apart. You’ll save on labour and restore the front end in one hit.