Parts for your 2013 Holden Commodore-Exhaust gasket

2013 Holden Commodore exhaust gasket — what it does and when to replace it

Referencing Holden’s VE/VF workshop manuals (2013 model year) and GM Global Service Information for the 3.6-litre V6 (LLT/LFX) and 6.0-litre V8 (L77), plus GM Genuine/ACDelco parts catalogues, the 2013 Holden Commodore is built with exhaust gaskets. These include multi-layer steel exhaust manifold gaskets at the cylinder head and sealing rings or flange gaskets at joints to the catalytic converters and mid-pipes. So yes, an exhaust gasket is absolutely relevant on this model.

The exhaust gasket’s job is simple but crucial: seal hot exhaust gases where metal parts join. On the Commodore, gaskets stop leaks at the manifold-to-head and at key flange connections, keeping the cabin free of fumes, maintaining correct oxygen sensor readings, and preventing that annoying ticking sound on cold starts. Good sealing also helps the engine management system deliver proper fuel trims, which can mean smoother running and better economy.

As part of regular servicing, it’s smart to have a quick look and listen. A sharp ticking under load or on cold start, a whiff of exhaust odour near the engine bay, soot marks around the manifold, or a hiss at a flange can point to a tired gasket or a slightly loose fastener. If the manifold or downpipes come off for any reason, Holden’s service info calls for new gaskets on reassembly and correct torque/angle settings for the fasteners. Reusing crushed or heat-cycled gaskets is false economy, they often won’t seal properly again.

When replacing, clean mating faces carefully, check manifolds and flanges for warping or cracks, and fit quality GM Genuine or reputable aftermarket gaskets designed for the specific engine. Avoid smearing sealants unless the service procedure explicitly calls for it—most Commodore exhaust joints are designed to seal dry with the correct gasket and torque sequence.

If there’s persistent leakage after refit, check for uneven flange faces, missing alignment sleeves, or aged studs. Oxygen sensor threads can use the correct anti-seize compound, but don’t lube manifold bolts unless specified—follow Holden torque guidance to the letter.

• Typical symptoms: ticking on start-up, exhaust smell, soot trails, slight loss of power.
• Best practice: replace gaskets whenever the joint is disturbed, inspect at each major service (e.g., 60,000–80,000 km).
• Safety first: exhaust leaks can allow fumes into the cabin—sort them promptly.

Popular questions

Does a 2013 Holden Commodore actually have exhaust manifold gaskets?
Yes. Holden’s 2013 service documentation for VE Series II and early VF models lists exhaust manifold gaskets for both the V6 and V8 engines, along with specified torque procedures. GM/ACDelco parts catalogues also list manifold and flange/donut gaskets for these engines.

What are the common signs the exhaust gasket is leaking on a 2013 Commodore?
Owners often notice a sharp ticking from the engine bay on cold start that softens as the metal expands, a faint exhaust odour near the bonnet, or sooty marks where the manifold meets the head or where pipes join. A leak can also skew O2 sensor readings, leading to rougher running and increased fuel use.

Can it be driven with a leaking exhaust gasket?
It’ll usually still run, but it’s not a great idea. Exhaust gases can enter the cabin, there’s a risk of heat damage nearby, and the ECU may chase odd fuel trims. It’s best to book it in and have the gasket replaced and the flanges checked so everything seals as intended.