Parts for your 2012 Mazda 3-Strut mounts

2012 Mazda 3 strut-mounts: what they do and when to replace them

Based on the Mazda 3 BL Series workshop manual (2010–2013), the 2012 Mazda 3 runs a MacPherson strut front suspension with an upper strut mount and integrated bearing, while the rear is a multi-link setup with separate shocks and springs (no rear strut-mounts). Major parts catalogues from Monroe and KYB, and the Haynes Mazda 3 manual, all list front strut-mounts for this model. So yes—strut-mounts absolutely apply to the front of the 2012 Mazda 3.

Up front, the strut-mount ties the top of the strut to the body. It carries vehicle weight, isolates vibration and road noise, and lets the strut turn smoothly as the steering pivots via a built-in bearing. When it’s in good nick, the Mazda 3 feels tight and quiet, when it’s worn, the steering can feel notchy or vague, and knocks over bumps creep in.

Typical signs it’s time to service the 2012-mazda-3 strut-mounts include: a clunk or thud on sharp bumps, creaking or groaning while turning at low speed, steering that won’t self-centre cleanly, and a slight directional wander. A visual check can reveal perished rubber, separation around the mount, or excessive movement at the strut tower when the wheel is bounced. Technicians often feel roughness in the bearing with the spring unloaded.

• Inspection: Have the front strut-mounts checked at regular services (every 20,000–30,000 km is a good rhythm), or whenever shocks/struts are replaced.
• Replacement best practice: Replace mounts in pairs, use quality OE-equivalent parts, and include the bearing, dust boots, and bump stops while you’re there. Many go for pre-assembled strut units to save time and avoid spring-compressor hassles.
• Fitting details: Correctly clock the spring and mount, torque all fasteners to spec, and follow with a full wheel alignment—camber and toe can shift after strut work.
• Use case: Aussie and Kiwi roads, heat, and coastal conditions can accelerate rubber ageing and bearing corrosion, so preventive replacement alongside struts pays off.
• DIY note: A spring compressor is required and can be dangerous—leave it to a pro unless properly equipped.

Done right, fresh front strut-mounts restore crisp steering feel, cut down on cabin noise, and protect new struts from premature wear. It’s a straightforward, high-value piece of maintenance for anyone servicing their 2012-mazda-3 strut-mounts.

Popular questions about 2012 Mazda 3 strut-mounts

Are the front and rear strut-mounts the same on a 2012 Mazda 3?
The front uses true strut-mounts with bearings because it’s a MacPherson strut design. The rear isn’t a strut—it's a separate shock and spring—so there’s no rear strut-mount in the same sense. Rear top shock mounts exist, but they’re a different part and don’t steer.

How long do 2012 Mazda 3 strut-mounts last?
Many last 100,000–150,000 km, but life varies with road quality, climate, and driving style. If you’re fitting new front struts, it’s smart to renew the mounts and bearings at the same time to avoid double labour and to keep steering silky.

Do strut-mounts need an alignment after replacement?
Yes. Any front strut or strut-mount work can nudge wheel angles. A proper four-wheel alignment after installation ensures even tyre wear and straight-line stability.