Parts for your 2016 Mazda Cx-9-Exhaust mount

2016 Mazda CX-9 Exhaust Mount

Based on the Mazda CX-9 (TC, 2016–) Workshop Manual procedures for Exhaust System Removal/Installation and the Mazda Electronic Parts Catalogue listings for exhaust “insulators” and hanger brackets, the 2016 Mazda CX-9 is fitted with multiple exhaust mounts. These rubber insulators and brackets suspend the exhaust from the body and are a relevant service item on this model.

The exhaust mount on a 2016 Mazda CX-9 does a deceptively big job. It cradles the exhaust from the downpipe right through to the rear muffler, isolating engine and road vibrations from the cabin whilst allowing the system to expand and move with heat. Mazda specifies rubber insulators on hanger pegs and bolted brackets along the mid and rear sections, so the system stays centred and clear of the underbody and bumper trims.

When these mounts age, the rubber hardens, cracks, or elongates. That can lead to a droopy tailpipe, dull thumps over bumps, or an annoying buzz at idle. On Aussie and Kiwi roads—especially with coastal exposure, towing, or frequent short trips—the combination of heat cycles and corrosion can hasten wear. A quick check at each service or every 20,000 km is a smart move. Look for perished rubber, shiny contact marks on the exhaust or heat shields, and loose or rusty hanger brackets.

Replacement is straightforward on a hoist: support the exhaust, remove the old insulators, inspect the metal hangers and brackets, and refit quality OE-grade rubbers. A mist of silicone spray helps the new mounts slide on cleanly. It pays to replace mounts in pairs on the same section so the exhaust sits evenly. After refitting, confirm there’s consistent clearance to the subframe, shields and bumper, and recheck bracket fasteners are tightened to Mazda’s torque specs from the workshop manual.

Driving with a failed mount isn’t ideal. The exhaust can strike the body, crack a weld, or stress the flex joint. In worst cases, it can sit too close to trims and heat shields. Given the low cost of the insulators and the short labour time, proactive replacement saves headaches later. For owners who tow or regularly load up the CX-9, more frequent inspections are wise. Stick with mounts designed for this model—universal rubbers that are too soft or too firm can cause new rattles or premature wear.

• Typical signs: thumps, rattles, sagging tailpipe, vibration at idle, visible cracks.
• Service tip: inspect every service, replace aged or oil-soaked rubbers and any rusty brackets.

Popular questions

How many exhaust mounts does a 2016 Mazda CX-9 have?
Most CX-9s use several rubber insulators from the centre section to the rear muffler—typically four to six, depending on market spec and whether the vehicle is FWD or AWD. A quick look on a hoist will confirm the exact count on a given car.

Is it safe to drive a CX-9 with a broken exhaust mount?
Short distances may be possible, but it’s not recommended. A failed mount can let the exhaust hit the body, stress joints, or melt nearby trims. There’s also a small risk of fumes entering the cabin if another fault develops. Replacing the mount promptly avoids bigger repairs.

What are the common symptoms of worn exhaust mounts on a CX-9?
Owners often notice a dull knock over bumps, a rattle at start-up or idle, or a tailpipe that sits off-centre. Visual checks may show cracked or stretched rubber and shiny rub marks where the system has been touching shields or the underbody.