Parts for your 2013 Mazda Cx-7-Control arms

2013 Mazda CX-7 Control Arms — What They Do and When to Replace Them

Control arms are absolutely used on the 2013 Mazda CX-7. This is backed by the Mazda CX-7 (ER) Workshop Manual—Front Suspension (MacPherson strut) and Rear Suspension (Multi-link)—and the Mazda Electronic Parts Catalogue, which both list front lower control arms with ball joints and rear multi-link arms with bushes. Common aftermarket and OEM catalogues for the ER-series also list complete arms and bush kits, confirming fitment.

On the CX-7, the front end runs a MacPherson strut layout with a hefty lower control arm that locates the wheel and lets it move up and down smoothly while keeping steering geometry in check. Down the back, a multi-link setup uses several arms to balance comfort and grip. Together, these arms and their bushes soak up bumps, keep the tyres planted, and stop the steering from getting twitchy. When the bushes or ball joints wear, the CX-7 can feel vague, clunk over corrugations, scrub tyres, or pull under brakes.

As part of routine servicing, it’s smart to inspect the control-arm bushes and ball joints every 20,000–30,000 km, or at each service if the vehicle tows, sees rough roads, or spends time on gravel. Look for split or leaking bushes, torn dust boots, rust-coloured staining, and any free play. If there’s knocking over speed humps, tramlining, or uneven tyre wear, it’s worth a closer look.

Replacement is straightforward for a pro and best done in pairs on the same axle to keep handling balanced. Quality arms (genuine or reputable aftermarket) save headaches—cheaper rubber can collapse early. On reassembly, the bushes should be torqued with the suspension at ride height to prevent preloading, and a four-wheel alignment is a must to dial in camber and toe. Where Mazda specifies new fasteners or pinch bolts, follow that, some hardware is torque-to-angle and shouldn’t be reused.

Owners who like a tauter feel can opt for upgraded bushes, but on-road CX-7s in Australia and New Zealand are usually happiest with OE-style rubber for comfort. With good arms and fresh bushes, the CX-7 tracks straight, steers neatly, and treats tyres kindly—exactly what’s wanted for daily commuting and weekend trips alike.

• Watch for: clunks, steering wander, vibration on braking, and inner-edge tyre wear.
• Service tip: Inspect at each service, align after any arm or bush replacement.

Popular questions about 2013 Mazda CX-7 control arms

How long do CX-7 control-arm bushes last?

It varies with driving, but many see 80,000–150,000 km. Lots of stop–start, heat, or rough roads in AU/NZ can shorten that. If there’s cracking, movement, or fluid weep on hydraulic bushes, it’s time.

Do the front and rear control arms need replacing together?

Not necessarily. Replace on the affected axle in pairs. If fronts are worn, do both fronts, same story for the rear. A wheel alignment should follow any control-arm work.

Can worn control arms cause uneven tyre wear on a CX-7?

Yes. Worn bushes or ball joints can push camber and toe out of spec, scrubbing the inner or outer edges. Once the arms are sorted, get an alignment and check tyre pressures to protect the new rubber.