Parts for your 2008 Holden Commodore-Exhaust mount

2008 Holden Commodore Exhaust Mount

Exhaust mounts are absolutely used on the 2008 Holden Commodore (VE series). Factory service information for the VE platform (GM Holden VE Series Service Manual/GM SI, Exhaust and Muffler procedures) specifies multiple rubber hanger insulators supporting the system, and aftermarket catalogues from Mackay Rubber and Walker Exhaust list direct-fit hanger insulators for VE models. So “exhaust-mount” is a relevant, fitted service item on this vehicle.

On a 2008 Commodore sedan, Sportwagon or ute, the exhaust mounts (also called hanger insulators or rubbers) suspend the pipes and mufflers from the body. They keep the system aligned, absorb vibration and heat expansion, and stop the exhaust knocking the floor or rear bumper. By isolating movement, they also reduce stress on flanges, cats and manifolds, which helps prevent cracks and leaks.

Over time, the rubber can perish, harden or stretch from heat, road grime and load (especially on V8s, tow rigs or cars with aftermarket systems). Telltale signs are thumps over bumps, a metallic clank at start-up or shutdown, exhaust tips sitting off-centre, or visible sag in the rear mufflers. If the exhaust can be moved by hand more than a few millimetres, one or more mounts may be on the way out.

As part of regular servicing, it’s smart to inspect the mounts every 10,000–15,000 kilometres or at each oil change. Look for cracks, tears, oil-swollen rubber, elongated holes and missing support wires. Replacement is straightforward: safely raise and support the car, support the exhaust, then lever the old insulator off the hangers. A mist of silicone spray helps. Fit quality EPDM rubber or a rated polyurethane mount if you want a firmer feel (noting a slight increase in cabin NVH). Replace in pairs on the same section where possible, re-centre the system to keep clearances even, and check heat shields and hanger brackets at the same time. Torque any bracket fasteners to spec and confirm the tips sit neatly in the bumper cut-outs to avoid melting the surround.

• Typical time: 15–30 minutes per mount with basic tools.
• Common locations: rear mufflers, centre section/crossmember, and near the front pipe.
• Good practice: after a mount swap, recheck clearances once the exhaust has heat-cycled.

Technical sources referenced: GM Holden VE Series Service Manual (GM SI – Exhaust/Muffler procedures), Mackay Rubber Exhaust Mount Catalogue (Holden VE applications), Walker Exhaust components catalogue for VE platform hanger insulators.

Popular questions about 2008 Holden Commodore exhaust mounts

How many exhaust mounts does a 2008 VE Commodore have?
Most VE models run between four and six mounts, depending on body style (sedan, Sportwagon, ute), engine and whether the system is single or twin. Each rear muffler is typically supported by at least one insulator, with additional mounts at the centre and front sections. Aftermarket systems may add or relocate hangers.

How often should the exhaust mounts be replaced?
There’s no fixed interval, they’re replaced on condition. In Aussie and Kiwi conditions, many last 5–10 years, but heat, towing and performance exhausts can shorten that. Inspect at each service and replace at the first sign of cracking, hardening, sag or excessive movement.

Can firmer polyurethane mounts be used on a VE?
Yes, firmer poly mounts can sharpen exhaust control and reduce droop, handy on lowered cars or big-bore systems. The trade-off is a bit more vibration or resonance at idle and during cold starts. For a factory-like feel, quality rubber (EPDM) is the safe bet.