Parts for your 2009 Holden Commodore-Exhaust mount

2009 Holden Commodore exhaust-mount — what it does and when to refresh it

Based on Holden VE Commodore factory service information (2006–2013), GM Global Service/parts catalogues, and Australian/NZ aftermarket fitment guides that list VE-specific exhaust hanger insulators, the 2009 Holden Commodore is fitted with exhaust mounts. These rubber isolators (often called hangers) support the exhaust and decouple vibration from the body.

On a 2009 Holden Commodore, the exhaust-mount sits at key points from the front pipe to the rear mufflers, cradling the system so it stays correctly aligned under load and heat. The job is simple but critical: hold the pipework up, stop it knocking the floor, subframe or heat shields, and keep cabin noise and harshness low. When the rubber perishes, stretches or tears, the exhaust can sag, stress joints and gaskets, and thump over bumps.

For servicing, exhaust-mounts are a “inspect at every service, replace on condition” item. Age, heat cycles and oil contamination gradually harden and crack the rubber. VE sedans, wagons and utes can also load the rear mounts differently depending on tow bars, aftermarket systems or track use, so condition varies car to car.

• Typical signs it’s due: a dull thud over bumps, buzzing or vibration at idle, visible sagging or a tailpipe sitting off-centre in the bumper, and rubber that’s cracked or separating from its metal sleeves.
• Handy replacement tips: support the exhaust with a jack and timber block, wet the mounts with silicone spray to slide them off/on, replace any mount that looks questionable (doing them in pairs helps height consistency), and check adjacent heat shields and clamps while access is open.
• Choices: OEM-style rubber keeps factory refinement. Firmer polyurethane hangers can hold heavy aftermarket systems steadier, but may add a touch more vibration at idle.

There’s no fixed kilometre interval, many originals last well past 120,000 km, but once a mount allows contact or sag, it’s time. After a fresh fit, confirm tailpipe clearances, ensure the mufflers sit even in the bumper cut-outs, and recheck after a short drive as the rubber beds in. Keeping the exhaust-mounts healthy protects welds, joints and catalytic converters, and keeps the VE feeling tight and quiet on Aussie and Kiwi roads.

Popular questions

How often should the exhaust-mounts be replaced on a 2009 Holden Commodore?
There’s no strict schedule. Most VE rubber hangers last many years, but by 8–12 years or 120–180,000 km they often show cracking or sagging. A quick look at each service is the go, replace any that are perished, stretched, or letting the exhaust touch the body.

Will worn exhaust-mounts cause a RWC (AU) or WOF (NZ) fail?
They can. If the system is insecure, fouling the body, or likely to contact moving parts, inspectors may fail it. Fresh mounts restore proper support and clearances, which helps with compliance and daily drivability.

Are polyurethane exhaust-mounts a good upgrade for a VE Commodore?
For heavier aftermarket systems or track work, firmer poly hangers can reduce movement and prevent banging. For daily duty, many owners prefer OEM-style rubber for the best noise, vibration and harshness control.