Parts for your 2012 Mazda Cx-9-Strut mounts

2012 Mazda CX-9 strut mounts — what they do and when to replace them

Strut mounts are fitted to the front suspension of the 2012 Mazda CX-9. Mazda’s 2012 CX-9 Workshop Manual (Front Suspension – MacPherson Strut) specifies a MacPherson strut front end, which by design uses a top strut mount with an integrated bearing. Major aftermarket fitment catalogues from suspension manufacturers also list front strut mounts for 2007–2015 CX-9 models. The rear of the CX-9 uses a multi-link setup with separate shock absorbers, so rear strut mounts aren’t applicable.

On this model, the front strut mount sits at the top of the strut and does three key jobs. First, it secures the strut assembly to the body. Second, its rubber insulator isolates knocks and vibration to keep the cabin quiet and the steering feel tidy. Third, an integrated bearing allows the strut to rotate smoothly with the steering, which helps with precise turn-in and prevents “memory steer”. When the rubber perishes or the bearing wears, the CX-9 can develop clunks over speed bumps, creaks when parking, or a notchy steering feel. Uneven tyre wear and front-end vibration are also common symptoms.

For servicing, it’s smart practice to inspect the front strut mounts whenever the vehicle is in for a front-end check, alignment, or when tyres are rotated. Any visible cracking in the rubber, play at the top of the strut, rust bleed, or torn dust seals calls for replacement. Because the bearing and insulator age together, replacing mounts in axle pairs is recommended, ideally at the same time as new struts and spring seats. After any front strut or mount work, a wheel alignment should be carried out.

Technicians should follow the Mazda Workshop Manual for safe spring compression, correct orientation of the mount and bearing, and torque settings. Premium OE-equivalent mounts generally deliver the best NVH behaviour and longevity, especially on heavier family SUVs like the CX-9 that see mixed urban and highway kilometres.

• Typical warning signs: front-end clunking, creaking on low-speed steering, steering that doesn’t self-centre cleanly, vibration, and feathered tyre wear.
• Inspection tip: check at every 20,000–30,000 km service interval or sooner if symptoms appear.
• Replacement tip: fit quality mounts with new bearings and insulators, replace both fronts together and align afterwards.

Do both ends of a 2012 Mazda CX-9 have strut mounts?

No. The front uses MacPherson struts with strut mounts and bearings, as outlined in Mazda’s workshop documentation. The rear is a multi-link arrangement with separate shocks and doesn’t use strut mounts.

How often should front strut mounts be replaced on a CX-9?

There’s no fixed time limit, but many last 100,000–160,000 km depending on roads and load. They should be inspected every service (around 20,000–30,000 km), and replaced if there’s noise, play, cracking, or rough steering.

What are the tell-tale symptoms of worn CX-9 strut mounts?

Common signs include clunks over bumps, creaking at parking speeds, a notchy or “memory” steering feel, vibration through the wheel, and uneven front tyre wear. Any of these warrant a closer look and likely replacement.